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3 years ago

Plants exchange gas with the atmosphere. Which statement accurately describes this process?

Biology

2 answers:

larisa86 [58]3 years ago

4 0

Answer:

C. Plants release carbon dioxide and take in oxygen through the xylem in leaves.

Explanation:

Plants exchange gas with the atmosphere and release carbon dioxide and take in oxygen through the xylem in leaves.

sweet-ann [11.9K]3 years ago

3 0

Answer: D. Plants release oxygen and take in carbon dioxide through the stomata in leaves

Explanation:

Plants evolved from freshwater green algae and eventually developed strategies that adapt them well for life on land. The major source of plant nutrition is the fixation of atmospheric CO2 into simple sugar using the energy of the sun. CO2 enters through the stomata. O2 is a product of photosynthesis and atmospheric component that also moves through the stomata. It is used in cellular respiration to release energy from the chemical bonds in the sugar to support growth and maintenance in the plant. Water and gas diffusion into and out of a plant occurs through tiny mouth-shaped openings called stomata (singular, stoma).

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3 years ago

Dimples and long eyelashes are both autosomal dominant traits. If a woman with no dimples, who is heterozygous for long eyelashe

leva [86]

Answer:

a) aaBb

b) Dimples and short eyelashes

c) 50%

d) 25%

Explanation:

Let the gene for dimples be A

Let the gene for eyelashes be B

a) Woman has no dimples (aa) and is heterozygous for long eyelashes (Bb) so her genotype : aaBb

b) Man is heterozygous for dimples (Aa) so he will have dimples and it is already given that he has short eyelashes (bb)

When aaBb X Aabb :

aB ab

Ab AaBb Aabb

ab aaBb aabb

c) Out of the four possible combinations, aaBb and aabb will be born without dimples so this couple has 50% chance to produce a child without dimples.

d) Only aabb will be born without dimples and without long eyelashes so the couple has 25% chance to produce a child without dimples and without long eyelashes.

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