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Q4. Identify the way in which the seed of the following plant get disperse: ( / 3)
Name
Characteristics
Way of Seed Dispersal
Dandelion
Parachute like structures
Sandbur
Has hooks
Maple
Fruits have wings
Answers
Explanation:
hi.....................................
Related Questions
Explain why mice in urban areas can digest certain food better than rats in rural areas. Using the terms
"genes" and "allele frequency" in your explanation provide data of this phenomenon.
Answers
Finding the corresponding human illness genes using rat disease gene identification is helpful, but it also aids in understanding the mechanisms causing pathological defects.
What is the random alteration in allele frequencies caused by genetic drift?Genetic drift is the term used to describe the haphazard changes in gene variant frequencies within a population. Genetic drift occurs when the frequency of different alleles, or variable forms of a gene, fluctuates over time through chance. Changes in allele frequencies are used to measure these differences in allele presence.
Who made genetic drift public?In the future, Sewall Wright, a pioneer in population genetics, invented the phrase "genetic drift" and the corrected mathematical treatment.
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7. You perform a karyotype on a human cell and find that it has 23 chromosomes. Is this a somatic cell or
gamete? How do you know?
Answers
Which of the following is a characteristic shared by both electron and light microscopes?
Both microscopes have a resolving power of 0.01 nm.
They both utilize white light to magnify the specimen.
They both employ the use of objective lenses.
Both microscopes require an internal camera to visualize the specimen.
Answers
The characteristic shared by both electron and light microscopes is that they both employ the use of objective lenses.
Both types of microscopes use objective lenses to magnify the specimen being observed. Electron microscopes use electromagnetic lenses to focus a beam of electrons onto the specimen, while light microscopes use glass lenses to focus visible light onto the specimen. The resolving power, which refers to the ability to distinguish fine details, differs between electron and light microscopes. Electron microscopes have much higher resolving power than light microscopes, with electron microscopes typically capable of resolving details at the nanometer scale.
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children with persistent learning difficulties in reading and math are often deficient in
Answers
Children with persistent learning difficulties in reading and math may struggle with working memory due to limitations in their ability to effectively encode, store, and retrieve information.
These limitations can negatively impact their ability to follow instructions, remember key details, organize information, and apply strategies to solve problems.
Working memory deficits can manifest in different ways. In reading, children may have difficulty remembering sight words, decoding unfamiliar words, or comprehending and retaining the main ideas of a passage.
In math, they may struggle with recalling math facts, understanding multi-step problems, or keeping track of intermediate calculations.
The impact of working memory deficits on learning extends beyond reading and math. It can also affect other academic areas, such as writing, where students may struggle with organizing their thoughts, sustaining attention, and recalling relevant information.
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where is liver located
Answers
The liver is a vital organ located in the upper right quadrant of the abdomen, just below the diaphragm.
The liver is the largest internal organ in the human body and plays a crucial role in many important bodily functions.
The liver is responsible for filtering toxins and waste products from the blood, producing bile to aid in the digestion of fats, and regulating the metabolism of carbohydrates, proteins, and fats. The liver also plays a key role in the immune system, producing proteins that help to fight off infections and other diseases.
The liver is made up of several different lobes and is protected by the rib cage. Blood flows into the liver from the hepatic artery and the portal vein, which brings blood from the digestive organs. The liver then filters the blood and removes any harmful substances before sending it back out to the rest of the body.
The liver is a very resilient organ and can regenerate lost tissue, but if it is damaged or diseased, it can lead to serious health problems. Some common liver diseases include hepatitis, cirrhosis, and liver cancer.
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The liver is located in the upper right quadrant of the abdomen, just beneath the diaphragm and above the stomach.
It is the largest internal organ in the human body and is responsible for a variety of important functions, including filtering toxins from the blood, producing bile, and regulating glucose and other metabolic processes.
The liver is divided into two main lobes, the right lobe and the left lobe, which are connected by a structure called the falciform ligament.
The liver also sits on top of the gallbladder which is a small organ located just beneath the liver that stores bile
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Water molecules can cross a cell membrane to enter a cell by several different mechanisms. which answer choice is not a main way that water is transported into a cell?
Answers
what is a sound wave
Answers
Answer:
A sound wave is a vibration.
Explanation:
if the eggs of drosophila have two chromosomes, how many chromosomes do their diploid cell contain?
Answers
If the eggs of drosophila have two chromosomes, the chromosomes do their diploid cell contai are four chromosomes.
Chromosomes are long threadlike structures that are found in the nucleus of an organism's cells. Chromosomes are made of protein and a DNA molecule which contains genetic material that can be passed from parents to offspring.
In general, diploid cells contain two sets of chromosomes, one from each parent. Since the eggs of Drosophila have two chromosomes, we can assume that each parent contributes two chromosomes to the diploid cell. Therefore, the diploid cell will contain a total of four chromosomes (two from each parent). It is important to note that the number of chromosomes in diploid cells can vary between different species. In summary, the diploid cells of Drosophila contain four chromosomes, two from each parent.
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Plz helppp is that answer RIGHT
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A student set up two test tubes containing Elodea plants and sodium bicarbonate and topped each of them with a volumeter. Tube A was wrapped in aluminum foil. Both tubes were placed in a test tube rack in front of a lamp containing a bright white bulb. The student obtaine the following data from her experiment. Which of the following statements could explain this data?
Time (minutes) Tube A Tube B lo 26 25 26 21 27 15 118 38 20 115 149 15 24 110
a. The light bulb burned out after 15 minutes.
b. Both tubes were accidentally covered with aluminum foil.
c. The tubes were exposed to green light.
d. The student did not turn the light on until after 10 minutes had already passed
Answers
As per the details given, both tubes were accidentally covered with aluminum foil. The correct option is b.
It is clear from the data that Tube A, which was covered in aluminium foil, consistently displayed lower volumeter readings than Tube B.
This shows that Tube A produced less oxygen through photosynthesis than Tube B did.
Option (b) provides the most plausible explanation for these data: Aluminium foil was unintentionally placed over the top of both tubes.
The Elodea plants in Tube A would have been unable to perform photosynthesis and produce as much oxygen as they would have otherwise due to the aluminium foil's obstruction of the light.
Aluminium foil was not used to cover Tube B, which allowed it to receive the light needed for photosynthesis and produce more oxygen at higher rates.
Thus, the correct option is b.
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Explain why a person can caich a cold several times in a year but only catches measles once in his or her lifetime
Answers
A person can catch a cold several times in a year because the common cold is caused by a group of viruses known as rhinoviruses.
The person catches measles once in his or her lifetime because the person develops resistance to measles virus.
What are rhinoviruses?Rhinoviruses mutate rapidly, leading to the development of new strains that can evade the immune system's defenses. As a result, a person can catch a cold from a new strain of the virus, even if they had previously been exposed to another strain.
In contrast, measles is caused by the measles virus, which does not mutate as rapidly as the rhinovirus. Once a person is infected with the measles virus and recovers, their immune system develops immunity to the virus, which provides long-term protection against future infections.
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What conclusion about the cells does the data in the table support?
A. Cell 1 is from a plant; Cell 2 is from an animal.
B. Cell 1 is prokaryotic; Cell 2 is from a plant.
C. Cell 1 is prokaryotic; Cell 2 is from an animal.
D. Cell 1 is eukaryotic; Cell 2 is prokaryotic.
Answers
Answer:
C. Cell 1 is prokaryotic; Cell 2 is from an animal.
Explanation:
why is earthquake prediction a challenge for scientists
Answers
Answer:
Reliable predictions require precursors – some kind of signal in the earth that indicates a big quake is on the way. The signal has to happen only before large earthquakes and it has to occur before all big quakes.
Explanation:
Answer:
Plato: Currently, we can’t predict earthquakes. We can only measure their magnitude and location at the time that they occur. The equipment to measure earthquakes needs to be buried deep underground and is very expensive. Scientists haven’t developed an earthquake warning system yet because earthquakes give little warning. So there is no reliable way to predict when an earthquake will hit.
Explanation:
You and a friend walked by a tree with grass growing your friend states that the tree is larger than the grass because it's closer to the Sun and is able to take and more material do you agree
Answers
No, I do not agree with my friend's statement. Trees and grass both rely on the Sun for energy, but the amount of energy each absorbs depends on their size.
Trees are larger than grass, so they are able to absorb more energy from the Sun. However, the distance between the Sun and the tree does not affect the amount of energy absorbed by the tree. The amount of energy absorbed by the tree depends on the surface area of its leaves, not the distance between the Sun and the tree.
Additionally, the amount of energy absorbed by the grass is much more affected by the distance between the Sun and the grass than the tree because the difference in size between the grass and the Sun is much greater.
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How are the results and findings of scientific study communicated?
Answers
Answer:
Typically, scientists communicate their work within the scientific community by writing and publishing research articles and presenting posters and oral communication of scientific conferences.
Answer:
Scientists often communicate their research results in three general ways. One is to publish their results in peer-reviewed journals that can be ready by other scientists. Two is to present their results at national and international conferences where other scientists can listen to presentations.
a scientist is observing a eukaryotic cell and a prokaryotic cell. which structure could she only observe in the eukaryotic cell?
A.) cytoplasm
B.) DNA
C.) ribsomes
D.) Nucleus
Answers
Answer:
The answer is D. Nucleus are only found in Eukaryotes.
Explanation: In the question, we are told to find a structure that is found ONLY in eukaryotic cells. Because of this, we have to eliminate any option that is found only in prokaryotic cells, or any that is found in both prokaryotic and eukaryotic cells. In options A-C, we are given structures found in both types of cells. The cytoplasm, DNA, and ribosomes differ in each type of cell; however, nevertheless, they do not only appear in eukaryotic cells. This makes nucleus the only valid option, as it is only found in eukaryotic cells.
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Prokaryotic cells _______ have a nucleus or membrane bound organelles.
Answers
Prokaryotic cells *dont* have a nucleus or membrane bound organelles.
Explanation:Prokaryotic cells do not have a nucleus; rather, they have a membraneless nucleoid region (open part of the cell) that holds free-floating DNA.
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The photo shows some penguins. Which item is part of the penguins'
community?
A. Ice
B. Fish
C. Seawater
D. Air
Answers
Answer:
B. Fish
Explanation:
Communities are made up of biotic factors (living organisms)
Answer:
B. Fish
Explanation:
Test approved
Describe each group’s role in the food web:
Producers:
Herbivores:
Carnivores:
Omnivores:
Detritivores:
Decomposers:
Answers
2) only eat fruits and veg e.g. giraffes etc
3) only eats meat e.g. wolves etc
4)eat vegetables, fruits and meat e.g. humans etc
5) an animal that lives off of eating detritus (waste, debris) e.g. earthworms, maggots etc
6) an organism that breaks down organic material e.g. bacteria, fungi etc.
PLEASE HELP IF YOU KNOW THE ANSWER!!!
Answers
Answer:50 million
Explanation:you wanna devide the 6 and 300 each 2 pairs have 100.
6/300=50
100+100+100=300
^. ^. ^
2. 2. 2
What compounds do many algae have to help them absorb light at different wavelengths
Answers
Answer:
it is the Accessory pigments
How do the organ systems function together in the human body?
Answers
Answer:
Some body systems work together to complete a job. For example, the respiratory and circulatory systems work together to provide the body with oxygen and to rid the body of carbon dioxide. The lungs provide a place where oxygen can reach the blood and carbon dioxide can be removed from it. Some body systems share a common organ that performs more than one job.
What term describes the light-absorbing molecule that plants use to absorb energy?
A Grana
B Pigments
C Stroma
D thylakoids
Answers
Pigments, are the light-absorbing molecule that plants use to absorb energy, chlorophyll is the light absorbing pigment, hence option B is correct.
What is chlorophyll?Plants get their green color from a pigment called chlorophyll, which also aids in photosynthesis, which is how plants make their own food.
In a plant, chlorophyll's function is to absorb light, often sunlight. Two types of energy storing molecules receive the light energy that is absorbed.
The plant uses its stored energy to turn water and carbon dioxide from the air into glucose, a form of sugar, through photosynthesis.
Therefore, chlorophyll is a pigment, considered as a light absorbing molecule that plants use to absorb energy, hence option B is correct.
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what is the difference between red blood cell, white blood cell and platelets in table
Answers
Answer:
La principal diferencia entre los glóbulos rojos y los glóbulos blancos es su función;
la sangre roja transporta oxígeno por todo el cuerpo mientras que los glóbulos blancos participan en la defensa de los animales,
destruyendo los patógenos que invaden las células del cuerpo.
Las plaquetas son responsables de la coagulación de la sangre.
Explanation:
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Which organisms produce chemical energy for the rest of the environment?
Answers
Answer:
Organisms that produce chemical energy for the rest of the environment are the ones that produce chemical energy for the environment
Explanation:
Source: Trust me Bro
Answer:
plants make energy for the environment and plants get energy from the sun and it goes in a circle.
Explanation:
because it is the circle of life.
sequences contained in which libraries would be expected not to overlap at all?
Answers
All sequences would be expected to overlap at least partially.
Check all that apply.brain cDNA library and muscle cDNA library
muscle genomic library and muscle cDNA library . all sequences would be expected to overlap at least partially.
Why is it crucial that there be no overlap?The creation of much more than a codon cannot include a single nucleotide.
Why are overlapping sequences required while undertaking genomic sequencing?assembling the genome's sequence in its whole from random pieces.
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During punctuated equilibrium, species form as they rapidly adapt to open niches, a process known as _______ ______.
Answers
Answer:
During punctuated equilibrium, species form as they rapidly adapt to open niches, a process known as adaptive. radiation.
Explanation:
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calculate the surface area of a sphere with a radius of 2 meters
Answers
Answer:
16\(\pi\)
Explanation:
the surface area of a sphere is 4\(\pi\)r^2
so r as 2 would mean the surface area is 16\(\pi\) or about 50.265 meters squared.
Vitamins are one of the main ingredients of energy drinks. Select all of the following roles vitamins play in the body.
a. Through the manufacturing of coenzymes, they assist enzymes in chemical reactions.
b. They act as an organic energy nutrient.They act as an organic energy nutrient.
c. They act as hormones to direct the organs of the body to perform specific functions.
f. They act as antioxidants to protect our cells from the effects of damaging compounds.
Answers
Vitamins are important micronutrients that play different roles in the body. The following are the roles vitamins play in the body:Through the manufacturing of coenzymes, they assist enzymes in chemical reactions.They act as an organic energy nutrient.They act as antioxidants to protect our cells from the effects of damaging compounds.\
Vitamins play a crucial role in the body's energy production process. They help in the manufacturing of coenzymes that assist enzymes in chemical reactions, providing energy for bodily processes and functions. Additionally, they act as organic energy nutrients, which supply energy to the body.
Vitamins also act as antioxidants to protect cells from damaging compounds such as free radicals. Free radicals are unstable molecules that can damage cells and cause health problems such as heart disease, cancer, and aging.Furthermore, vitamins do not act as hormones to direct the organs of the body to perform specific functions. The role of hormones is performed by other substances in the body such as endocrine glands, which produce hormones that regulate various body functions.
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The pectoralis major acts on the humerus to do which of the following answers below?
1. medially rotate the arm
2. flex the arm
3. adduct the arm
Answers
Overall, the pectoralis major is an important muscle for upper body movement and plays a key role in arm adduction and medial rotation.
The pectoralis major is a large muscle located in the chest area. It has several functions, one of which is to act on the humerus bone in the upper arm. Specifically, the pectoralis major helps to adduct the arm, which means to bring it closer to the body. This is important for movements such as hugging, as well as for pulling objects towards the body. Additionally, the pectoralis major can also help to medially rotate the arm, which means to turn it inwards towards the body. However, it does not play a significant role in flexing the arm, which is primarily done by other muscles such as the biceps brachii.
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