in pines, pollen is typically moved from male to female cones by
Answers
In pines, pollen is typically moved from male to female cones by wind.
The male cones produce pollen, which is released into the air and carried by the wind to the female cones. The female cones contain ovules, which are fertilized by the pollen, leading to the development of seeds. The process of pollination in pines is known as anemophily, which means that the transfer of pollen occurs through the air.
This method of pollination is common in plants that are adapted to living in environments where pollinators, such as insects or birds, may be scarce or absent. Pines are a group of trees that have evolved to survive in harsh, windy environments, and their reproductive strategy is well-suited to these conditions.
The reliance on wind for pollination also means that pine trees do not produce showy flowers or nectar to attract pollinators, as these adaptations would not be effective in their environment. Instead, they produce cones that are designed to protect and distribute their pollen, ensuring the survival of their species.
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Related Questions
Without knowing the genetic differences of the birds, how can we know that cardinals and finches are likely more closely related to each other than cardinals and finches are to woodpeckers? Cardinals and finches live in more similar habitats. There is no difference in their relatedness; because they are all birds, they all evolved at the same time from a common ancestor. Cardinals and finches have more morphological similarities. Fossil records show that cardinals have been around longer than woodpeckers and sparrows.
Answers
Answer:
The correct answer is - Cardinals and finches have more morphological similarities.
Explanation:
To find out the relatedness of the different species or organisms one can use genetic mapping to find precise relatedness, however, if one can not find the genetic differences of the organism one can use the morphological similarities and differences to find out how closely they are related.
Homologous structures and analogous structures are two major morphological characters to find how closely related cardinals and finches are than cardinals and finches are to woodpeckers.
3. A type of learning which involves structured institution is
Answers
A type of learning that is structured is formal education.
What is formal education?An organized education system that extends from primary (and, in some countries, nursery) school to university is referred to as formal education.
It usually includes specialized programs for vocational, technical, and professional training. Examples include classroom learning, school, colleges, etc.
Thus, the type of learning that is structured is formal education.
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what are the environmental impacts of thr fishing industry?
Answers
Answer:
In addition to harvesting large amounts of fish and seafood to sell, large-scale fishing operations catch and often unintentionally kill untargeted marine life, including juvenile fish, corals and other bottom-feeding organisms, sharks, whales, sea turtles, and birds.
Lepromatous Leprosy as a Great Imitator: Ulcerative Erythema Nodosum Leprosum and its Systemic Manifestations
Answers
Lepromatous leprosy is a severe form of leprosy that is characterized by widespread skin lesions, nerve damage, and systemic manifestations.
What are the manifestations?One of the most common systemic manifestations of lepromatous leprosy is erythema nodosum leprosum (ENL). ENL is an immune-mediated reaction that can cause fever, joint pain, and the development of painful, red nodules on the skin.
ENL can be a very challenging condition to manage, as it can be unpredictable and recurrent. In some cases, ENL can be so severe that it can lead to hospitalization. However, there are treatments available that can help to control ENL and prevent further complications.
One of the most important things to do if you are diagnosed with lepromatous leprosy is to be aware of the signs and symptoms of ENL. If you experience any of the following symptoms, it is important to see your doctor right away:
Fever
Joint pain
Painful, red nodules on the skin
Fatigue
Weight loss
Swollen lymph nodes
If ENL is not treated, it can lead to serious complications, such as:
Kidney failure
Heart failure
Liver damage
Bone marrow suppression
Death
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Complete question:
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Which of the following is correct about the polyadenylation mechanism?
Answers
Answer:
a long chain of adenine nucleotides is added to the 3' end of mRNA during termination of transcription
Explanation:
how environmental factors can result in atmoshpheric circulation?
Answers
By the Coriolis effect and density variations brought on by the strongest solar energy reaching the equator are the main causes of global wind patterns, environmental factors can result in atmoshpheric circulation.
Heat is moved over the Earth's surface through atmospheric circulation, which has an impact on the water cycle, including cloud formation and precipitation events. The movement of air masses determines our everyday weather, and long-term patterns in circulation have an impact on regional climate and ecosystems.
There is a predictable pattern to how air travels through the atmosphere of our planet, despite disturbances like weather fronts and storms. The Earth is heated by the Sun more near the equator than in the poles, which results in this pattern, known as atmospheric circulation. It is also impacted by the Earth's rotation.
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Pleaseeeeee helpppp?!!!!
Identify Structure A
A-chloroplast
B-stroma
C-granum
D-thylakoid
Identify Structure B
A-chloroplast
B-stroma
C-granum
D-thylakoid
Identify Structure C
A-chloroplast
B-stroma
C-granum
D-thylakoid
Identify Structure D
A-chloroplast
B-stroma
C-granum
D-thylakoid
Answers
Answer: A
Explanation:
The following structures labelled in the given diagram are:
A- Chloroplast
B- Stroma
C- Granum
D- thylakoid
What is a chloroplast?A chloroplast is a type of membrane-bound organelle known as a plastid that conducts photosynthesis predominantly in plant and algal cells.
Chloroplasts provide energy through photosynthesis and oxygen-release mechanisms, which support plant growth and crop yield. As such, chloroplasts are responsible for the manufacture of active substances such as amino acids, phytohormones, nucleotides, vitamins, lipids, and secondary metabolites
Chloroplasts are oval-shaped and have two membranes: an outer membrane and an inner membrane. Between the outer and inner membrane is the intermembrane gap roughly 10-20 nm wide. The space within the inner membrane is the stroma, the dense fluid within the chloroplast.
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How long did the cicadas in the video live underground?
O A. 17 days
O
B. 7 months
O
C. 7 years
O
D. 17 years
Answers
Answer:
D. 17 years
Explanation:
if you were in 2004 cicadas were around that time. 2004 to get to 2021 is 17 years so its D
hope this helped
why did samy say the f word i told him so many times and still says it
Answers
At age six, bobby sees his house burn down in a fire, destroying all of his toys. on his seventh birthday, bobby screams and run when he sees the lit candles on this birthday cake. what is the unconditioned response demonstrated by bobby in this example?
Answers
The running and screaming are the unconditioned response demonstrated by Bobby in the example.
A natural reaction to the unconditioned stimulus that is unlearned in classical conditioning is referred to as an unconditioned response. Ivan Pavlov, a Russian physiologist, was the first to discover the idea of the unconditioned response.
The canines in his experiment, which he used to study the digestive systems of dogs, started salivating as soon as food was given to them. When a buzzer was rung each time the dogs were fed, according to Pavlov, the animals finally learned to slobber in response to the buzzer alone.
In the given example, Bobby's unconditioned behavior of running and screaming was shown since those behaviors came naturally as a result of some trauma he has experienced.
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In SDS-PAGE, protein sample is first treated with detergent sodium dodecyl sulfate(SDS), in order to
a. make the protein become negatively charged.
b. make the protein become positively charged.
c. renature the protein
d. adjust the pH of protein
Answers
When a protein sample is treated with SDS in SDS-PAGE, the SDS molecules bind to the protein and coat it with a negatively charged layer (Option A).
What is SDS-PAGE?Sodium dodecyl-sulfate polyacrylamide gel electrophoresis (SDS-PAGE) is commonly used to obtain high resolution separation of complex mixtures of proteins. The method initially denatures the proteins that will undergo electrophoresis. In SDS-PAGE, a protein sample is first treated with detergent sodium dodecyl sulfate (SDS) in order to make the protein become negatively charged. This causes the protein to become uniformly negatively charged, which allows it to be separated based on its size and shape during electrophoresis.
Thus, the correct option is A.
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If someone tells you that scientific knowledge cannot be changed. How would you answer that statement. Use an example of how scientific knowledge has been changed.
Answers
Answer:
I would say Scientific knowledge is always being changed and performed in different ways. Scientific knowledge is always being changed as scientist are experiencing and collecting new information everyday using the scientific method. ( please let me know if this is wrong ) !
Answer:
Scientific knowledge can be changed.
Explanation:
For example, the Cell Theory. The Cell Theory has been changed over and over again, leading to what it is know. People didn't have microscopes when the cell theory was first discovered, so when microscopes came along, we found out more about cells and revised the cell theory.
HELPPPPPPPPPPPP 15 POINTS MARK BRANLIST
Granite is formed when _____. limestone is changed by heat and pressure sediment is cemented with calcite magma cools under the surface of the Earth lava spills onto the Earth's surface and cools
Answers
Answer:
Granite is formed when molten magma flows and cools underground.
Explanation:
Granite is an intrusive igneous rock, so it forms underground.
Answer:
Granite is formed when molten magma flows and cools underground.
Explanation:
The igneous rock granite could be pressed below the Earth's surface until it changes into the metamorphic rock gneiss.
7. When a bacterium releases inter-species chemical molecules used for quorum sensing, what other bacteria can
detect and respond to that signal?
all bacteria in the area
only bacteria that are from the same family
only the exact same type of bacteria
all virulent bacteria in the host organism
Answers
Answer: only the same bloof cell type
Explanation:
it say in the book
What is the advantage of using a pressure relief valve to protect a receiver instead of a fusible plug?
A) Pressure relief valves are less expensive.
B) The pressure relief valve resets itself.
C) Pressure relief valves can also be used to check the receiver pressure.
D) It is impossible for a pressure relief valve to malfunction.
Answers
When both solenoids are turned on simultaneously, pump flow is sent to the cylinder until the maximum relief pressure is reached. Before blocking, a solenoid shutoff valve always displays a small delay.
Pump: what is it?
Pump definition (Page 2 of 3) unchanging verb. 1: to operate a pump: use a pump to elevate or move a fluid. 2: to push oneself as though pumping something. 3. to behave in a way that mirrors how a pump handle might. verb in transit. 1 a: to use a pump to lift (anything, such as water). b: to use a pump to pull fluid from.
What categories fall under pumps?
Pump classification. Pumps are divided into different categories based on how fluid is given energy. The fundamental techniques are volumetric displacement, kinetic energy addition, and electromagnetic force application. A fluid can be moved mechanically or using the assistance of another fluid.
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If a population of geese is sampled by scientists and is found to be experiencing growth, then which of the following is accurate?
Select one or more:
a. Births outnumbered deaths, on average, over the period studied
b. The birds are growing to a larger size each year
c. There is no limit to the population size
d. No geese are dispersing out of the population
e. Deaths outnumbered births every year of the study
Answers
If a population of geese is sampled by scientists and is found to be experiencing growth, then a. Births outnumbered deaths, on average, over the period studied. This indicates that there were more geese born than dying during the study, resulting in a growing population. A. Births outnumbered deaths, on average, over the period studied
Based on the information provided, if a population of geese is experiencing growth, the following statement is accurate:
a. Births outnumbered deaths, on average, over the period studied
This indicates that there were more geese born than dying during the study, resulting in a growing population.
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How many leaf nodes can a B+ tree contain?
Answers
The number of leaf nodes that a B+ trees can contain depends on several factors, such as the size of the tree, the size of the data, and the block size of the storage device on which the tree is stored.
The formula for calculating the maximum number of leaf nodes is (block size / data size) - 1. This means that if the block size is 4096 bytes and the data size is 64 bytes, then the maximum number of leaf nodes in the tree would be 63.
However, it's important to note that B+ trees are designed to be dynamic and can adjust their size by splitting or merging nodes as needed to maintain optimal performance and balance.
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The layer of loose connective tissue that directly supports the digestive epithelium is the A) lamina propria.B) muscularis mucosae. C) submucosa.D) submucosal plexus. E) myenteric plexus.
Answers
The layer of loose connective tissue that directly supports the digestive epithelium is the lamina propria. The correct option is A.
This layer is located within the mucosa layer of the digestive tract and contains various cells, including immune cells, that help protect the body from pathogens. It also contains blood and lymphatic vessels, which help to transport nutrients and waste products.
The muscularis mucosae is a thin layer of smooth muscle located within the mucosa layer, while the submucosa is a layer of connective tissue located beneath the mucosa.
The submucosal plexus and myenteric plexus are both networks of nerves that are involved in controlling the movements of the digestive tract.
Therefore, The layer of loose connective tissue that directly supports the digestive epithelium is the A) lamina propria. This layer provides structural support and contains blood vessels, lymphatic vessels, and nerves, all essential for the proper functioning of the digestive epithelium.
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What is the probability that a child will have dimples when both parents are heterozygous for the gene that determines dimples?
Answers
The probability of their child having dimples is 3/4 or 0.75, which is equivalent to a 75% chance, as in the gene and both parents being heterozygous.
The gene for dimplesThe gene for dimples is a dominant trait, which means that if an individual inherits at least one copy of the dominant allele, they will express the trait. In this scenario, both parents are heterozygous, meaning they each carry one dominant allele and one recessive allele.
Since both parents are heterozygous, they each have a 50% chance of passing on the dominant allele (D) and a 50% chance of passing on the recessive allele (d) to their offspring.
To calculate the probability of their child having dimples, we can use a Punnett square to determine the possible genotypes of their offspring.
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How do similarities in body structure provide evidence for evolution?
Answers
Answer:
comparative anatomy
Explanation:
they both provide evidence for evolution homologous structures are structures that are similar in related organisms because they were inherited from a common ancestor the structures are similar because they evolved to do the same. Not because they were inherited from a common ancestor
Both provide evidence for evolution. Homologous structures are structures that are similar in related organisms because they were inherited from a common ancestor. ... The structures are similar because they evolved to do the same job, not because they were inherited from a common ancestor.
Which state of matter is the least compressible? (1 point)
Solid
Liquid
Gas
Plasma
Answers
Answer:
solid matter is the least compressible.
Gene on a chromosome lies close to another gene controlling a different trait. This indicates that jeans are blank the first gene contributes to the expression of the second gene. This indicates blank
Answers
Answer: genes are linked
Explanation: Gene on a chromosome lies close to another gene controlling a different trait. This indicates that genes are linked, meaning they are physically close to each other on the same chromosome. The proximity of these genes suggests that they are more likely to be inherited together as a unit, rather than independently assorting during the process of genetic recombination.
Which is a likely advantage of having three different-colored varieties within a population of gentian plants?
Answers
Answer:
out of what?
Explanation:
Amphibians change from a water-dwelling form to an adult form that usually lives on land near a body of water. Which specialized structures allow adult amphibian to live on land and still maintain its internal balance?
A. Tail
B. Fins
C. Lungs
D. Gills
Answers
Answer:
C: Lungs.
Explanation:
Answer:
lungs
Explanation:
1. Which is the most common bone to break?
femur
tibia
skull
vertebrae
Answers
Unexpectedly, the clavicle, sometimes known as the collarbone, is the bone that breaks most frequently. The bone that spans the body's front from shoulder to shoulder is known as the clavicle. It breaks quite readily because of its length, slenderness, and conspicuous position.
What is meant by collarbone?Breastbone and shoulder blades are connected by the clavicles. the collarbone, also. Moving your arm or shoulder may become difficult and be quite uncomfortable. During the healing process, people who suffer from clavicle fractures frequently have to wear their arms in a sling. As soon as the fracture heals, there are often no restrictions. Most patients can move freely and can resume their normal activities without any restrictions. Healing time for certain fractures can range from six to nine months. Surgical intervention can be required if the fracture does not heal. Collarbones, also called "beauty bones," have historically been linked to thinness and, thus, attractiveness.To learn more about collarbone, refer to:
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can someone help me please
Answers
Answer:
1, cellular respiration
2. Energy for cells
3. Oxygen
4. Mitochondria
5. Chloroplast
6. Sugars/Glucose
7. Carbon Dioxide + Water
8. Oxygen
9. Photosynthesis
10. Energy from sunlight
Explanation:
Human Eye ModelExperiment 1: Optics of the Human Eye Part 2: Accommodation In the process of accommodation, muscles in the eye change the shape of the crystal- line lens to change its focal length. Initially, you will model accommodation by vary- ing the focal length of the crystalline lens using the adjustable focus lens. Later, when the model is filled with water, accommodation is achieved by replacing the crystalline lens with fixed lenses of various focal lengths. Procedure Note: If you have not done so yet, follow the instructions of page 5 to fill the adjustable focus lens with water. 1. Do not fill the eye model with water yet. Replace with lens in the SEPTUM slot with the adjustable focus lens. Position the eye model about 25 cm from the illu- minated screen Can you see the image on the retina? Move the syringe plunger to adjust the lens and form the clearest image possible. Is the lens concave or convex? Is it a converging lens or a diverging lens? 2. Move the eye model farther from the illuminated screen to about 50 cm. Adjust the lens again to form the clearest image. Did you increase or decrease the power of the lens? Did you increase or decrease the focal length? 3. Replace the adjustable focus lens with the +400 mm lens in the SEPTUM slot. Adjust the distance of the illuminated screen to form a clear image. Mark the position of the eye model so you can retum it to the same place after you fill it with water. 4. Fill the eye model with water to within 1 or 2 cm of the top. Return it to the same position as in step 3. Is the image still in focus? Try changing the distance, can you get it to focus? Explain what effect do the aqueous and vitreous humors (modeled by the water) have on the focal length of the eye's lens system? 5. Place the eye model about 35 cm from the light source, Replace the +400 mm lens in the SEPTUM slot with the +62 mm lens. Is the image in focus now? Move the eye model as close as possible to the light source while keeping the image in focus. Describe the image on the retina screen 6. Measure the object distance, o, from the screen of the light source to the top rim of the eye model, as pictured below. (The front of the rim is a convenient place to measure to and marks the center of the eye model's two-lens system.) Record this distance, which is the near point of the eye model when equipped with the +62 mm lens. The average human eye has a near point for distinct vision of about 25 cm tak +62 mm Lens
Answers
The experiment demonstrated the adjustments needed for achieving a clear image in the optics of the human eye model. The lens selection, positioning, and introduction of water mimicked the effects observed in a real eye.
Experiment 1: Optics of the Human Eye
1. The lens in the SEPTUM slot is replaced with the adjustable focus lens. The eye model is positioned about 25 cm from the illuminated screen.
If the image is not visible on the retina, the syringe plunger is moved to adjust the lens and to create the clearest image possible. The lens is convex and is a converging lens.
2. The eye model is moved farther from the illuminated screen to approximately 50 cm. The lens is adjusted to create the clearest image. The power of the lens has decreased, and the focal length has increased.
3. The adjustable focus lens is replaced with the +400 mm lens in the SEPTUM slot.
The distance between the illuminated screen and the eye model is adjusted to produce a clear image. The position of the eye model is marked so that it can be returned to the same position after it is filled with water.
4. The eye model is filled with water to approximately 1-2 cm from the top. It is returned to the same position. The image is still in focus. It is possible to adjust the distance to obtain a focused image.
The aqueous and vitreous humors, represented by water, have a significant impact on the eye's lens system's focal length. They serve to improve the focal length of the lens by providing a uniform refractive medium for the light to pass through.
5. The eye model is positioned roughly 35 cm from the light source. The +400 mm lens in the SEPTUM slot is replaced with the +62 mm lens. The image is in focus now.
The eye model is brought as near to the light source as possible while still keeping the image in focus. The image on the retina screen is vivid.
6. The object distance is measured from the screen of the light source to the top rim of the eye model. The near point of the eye model is around 25 cm when using a +62 mm lens. The near point of a human eye is about 25 cm, indicating that the eye model is a good representation of a real eye.
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upwellings bring cold, __________-________ water from the deep ocean to the surface for plants and animals to feed on (i.e., phytoplankton) and are areas of rich biological activity.
Answers
Upwellings bring cold, nutrient-rich water from the deep ocean to the surface for plants and animals to feed on (i.e., phytoplankton) and are areas of rich biological activity. Therefore, the two missing words that complete the statement given in the question are "nutrient-rich".
An upwelling is a condition in which the warm water in an ocean or sea is replaced by cold, nutrient-rich water from the ocean's depths. Upwelling usually occurs along coasts and brings cold, nutrient-rich water to the ocean surface, which is essential for plant growth and animal feeding. As a result, upwelling locations are home to a variety of life forms and are known as areas of rich biological activity. Phytoplankton and other plants are plentiful in these areas, serving as food for animals that are higher up the food chain. In summary, upwellings are essential for marine life and provide food and nourishment for animals in the ocean's ecosystem. Nutrient-rich water is transported from the depths to the ocean's surface via upwelling.
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8.Seeds- form through ____________ reproduction and contain an embryo that gives rise to a new plant. (Have adaptations that allow them to be spread by wind, water, on animals, etc.)
10.When a plant grows toward or away from a stimulus, it’s called a tropism.
a.3 Types:
i.Phototropism- a response to _________ that directs the stem to grow toward the light and roots to grow away from it
ii.Gravitropism- Stems and leaves grow away from the force of __________ while roots grow toward it.
iii.Thigmotropism- growth in response to _______. The side of the stem in contact with the object grows slower than the side not in contact. This causes the vine to twist around the object.
Answers
Explanation:
1. Seeds are the product of the ripened ovule, after fertilization by pollen and some growth within the mother plant. The embryo is developed from the zygote and the seed coat from the integuments of the ovule.
2. Abstract
3. photo tropism I think
4. Thigmotropism describes plant growth in response to touch or contact with a solid object.
Answer:
....Yeah what Leslie said... K
What makes a dominant allele different from a recessive allele