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The diagram below shows a microscopic view of the lower epidermis of a maple leaf. The cell indicated by the letter B is a guard cell. Guard cells are found on each side of the stomata.
Which of the following statements correctly describes how guard cells affect the physiological processes in a leaf?
A. Guard cells shrink to let in pollen for plant reproduction and swell to keep in oxygen.
B.Guard cells shrink to let in carbon dioxide for photosynthesis and swell to limit transpiration.
C. Guard cells shorten to let in light for photosynthesis and elongate to keep water from entering the cell.
D. Guard cells become rounder to let in oxygen for cellular respiration and flatten out to block the release of carbon dioxide.
Answers
Answer:
D is the answer of your quest.
Explanation:
D
The statement that correctly describes how guard cells affect the physiological processes in a leaf is as follows:
Guard cells shrink to let in carbon dioxide for photosynthesis and swell to limit transpiration.Thus, the correct option is B.
What is Photosynthesis?Photosynthesis may be defined as a type of process through which green plants and photosynthetic algae generally prepare their own food in the form of glucose with the help of carbon dioxide and water in the presence of sunlight.
Guard cells generally mediate the opening and closure of stomata. With the help of this activity, they regulate the rate of transpiration. Guard cells swell up and open the stomata for the exchange of gases when the plant has an excess of water and other useless gases. These types of cells are generally identified by their kidney-shaped appearance that surrounds the stomata.
Therefore, the correct option for this question is B.
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Answer:
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Sorry if I'm wrong
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Answer:
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Answer:
Meiosis is the first step in sexual reproduction during which crossing over and recombination develops new combinations of genes on chromosomes. When gametes are produced they under go random fertilization and offsprings with great genetic variations are produced.
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Explanation:
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Answer:
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Explanation:
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into both solids, but substance 1 becomes a liquid before substance 2. Based on this evidence, which
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Answer and I will give you brainiliest
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Explanation:
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Answers
Complete question:
A geneticist is studying two genes. each gene can be either dominant or recessive. a sample of 100 individuals is categorized as follows.
gene 2
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recessive 14 6
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Answer:
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(b) what is the probability that a randomly sampled individual, gene 2 is dominant ----> 70%
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Explanation:
Due to technical problems, you will find the complete question, the answer, and the explanation in the attached files.
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Answer:
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Answer:
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Pls answer
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Answer:
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Hope it will help you...
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Answer:
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Answer:
I believe sight is the most important body sense. Our eyes are able to protect us from danger and allows us to complete many day to day functions. Without our sight, we could be much more easily placed into harms way. Our eyes take over to ensure we are prepared for anything we may encounter.
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a
A
Question 3
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Answer:
The Stem
Explanation:
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Answer:
stem
Explanation:
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Answer:
tadpole
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A. enzymes
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C. phospholipids
D. fatty acids
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Answer: The answer is " evolution". Evolution is a major force in shaping modern classification methods. Evolution is the adjustment in the qualities of an animal categories more than a few ages and depends on the procedure of common determination.
The scientific field which has had the greatest influence on shaping modern classification methods is Evolution.
What is Evolution?Evolution is concerned with the sequence of changes which occur in organisms as they transform from their ancient forms to their modern forms.
It is the change in the genetic characteristics of a biological population over successive generations. These characteristics are manifestations of genes passed from parents to offspring during reproduction.
The three main types of Evolution are:
1. Divergent Evolution
2. Convergent Evolution
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Thus, the scientific field which has had the greatest influence on shaping modern classification methods is Evolution.
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2. Which is the correct structural organization of a plant?
A. Atom-Cell Tissue- Organ- Organ System Molecule-Cell
B. Cell Tissue- Organ Organ System
C. Atom Molecule Cell Tissue- Organ— Organ System- Organism
D. Atom Molecule- Cell Organ - Tissue Organ System Organism
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In a unique species of plants, flowers may be yellow, blue, red, or mauve. All colors may be true-breeding. If plants with blue flowers are crossed to red-flowered plants, all F1 plants have yellow flowers. When these produced an F2 generation, the following ratio was observed: 9/16 yellow, 3/16 blue, 3/16 red, and 1/16 mauve. Determine the F1 results of a cross between true-breeding red and true-breeding mauve flowered plants.
Answers
Answer:
F1) 100% bbRr, red flowered plants.
Explanation:
Available data:
flowers may be yellow, blue, red, or mauvecolors may be true-breedingthe cross of blue-flowered plants with red-flowered plants, produce plants that have yellow flowersF2 generation: 9/16 yellow, 3/16 blue, 3/16 red, and 1/16 mauve.Knowing that the phenotypic ratio is 9:3:3:1, we can assume that there are two genes involved in the flower color expression. We can name these genes B and R with a dominant and a recessive allele each (B, b and R, r respectively).
According to the first cross, we might establish the following genotypes:
1st Cross: blue-flowered plant x red-flowered plant
Parentals) BBrr x bbRR
Gametes) Br, Br, Br, Br bR, bR, bR, bR
F1) 100% BbRr, yellow plants
Parentals) BbRr x BbRr
Gametes) BR, Br, bR, br
BR, Br, bR, br
Punnett square) BR Br bR br
BR BBRR BBRr BbRR BbRr
Br BBRr BBrr BbRr Bbrr
bR BbRR BbRr bbRR bbRr
br BbRr Bbrr bbRr bbrr
F2) 9/16 yellow ---> 1/16 BBRR + 2/16 BBRr + 4/16 BbRr + 2/16 BbRR
3/16 blue ------> 1/16 BBrr + 2/16 Bbrr
3/16 red---------> 1/16 bbRR + 2/16 bbRr
1/16 mauve ----> 1/16 bbrr
So,
Yellow-flowered plants: BBRR, BBRr, BbRR, BbRrRed-flowered plants: bbRR, bbRrBlue-flowered plants: BBrr, BbrrMauve-flowered plants: bbrrAccording to these genotypes, the second cross would be like following,
2nd Cross: true-breeding red-flowered plants with true-breeding mauve flowered plants.
Parentals) bbRR x bbrr
Phenotype) Red Mauve
Gametes) bR, bR, bR, bR br, br, br, br
Punnett square) bR bR bR bR
br bbRr bbRr bbRr bbRr
br bbRr bbRr bbRr bbRr
br bbRr bbRr bbRr bbRr
br bbRr bbRr bbRr bbRr
F1) 100% bbRr, red flowered plants.
Why does soil lose its fertility from time to time?
Answers
Answer:
The soil losses its fertility when we grow many crops again and again on it as the consume all the nutrients present there. it can be restored by growing legumes in the soil or leave it barren for some months
Soil loses its fertility or when topsoil is lost due to erosion. ... The cotton took all the nutrients from the soil, and the nutrients were not replaced. Loss of Topsoil: Wherever soil is exposed, wind and water can erode it. Plants can cover and protect the soil in many ways.
Explain how the ocean affects human life through medicine, nutrition and the economy?
Answers
Answer:
Cures from the Deep
Explanation:
Many new marine-based drugs have already been discovered that treat some types of cancer, antibiotic resistant staph infections, pain, asthma, and inflammation.
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flexibility
multiple forms
red tape
multi-tiered decision-making
Answers
Answer:
flexibility
Explanation:
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what is the purpose of the article The Amazing World Inside a Human Cell
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mark brainlist please
Which of the following would show the Dominant Genotype? (Choose all that apply)
Answers
Answer:
The first one and second one
Explanation: