What is the function of the stomata?

Biology

1 answer:

julia-pushkina [17]2 years ago

3 0

Answer:

The stomata controls the flow of gases in and out of the leaves.

Explanation:

The opening and closing of the stomata controls gas flow in leaves. This controls is necessary to prevent excessive loss of water as vapour from the plant body via transpiration. Usually stomata opens in the day and closes in the night. Each stoma or stomatal wall is flanked by two bean-shaped guard cells, the only epidermal cells with chloroplasts. The wall of the guard cells next to the pore are thicker than those adjacent to the epidermal cells. Here,,the thicker wall cannot stretch as much as the thinner walls.

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A man with the autosomal recessive disorder phenylketonuria (PKU) and a woman without PKu heve a son named Peter, who does not h

Anton [14]

Answer:

<h2>2. Peter's maternal grandfather has PKU.</h2>

Explanation:

Such type of the genetic disorder in which two copies of a gene must be mutated at a time is called autosomal recessive disorder such as sickle cell anemia, phenylketonuria, and some other diseases.
When a sing copy of a gene is mutated in a person then this disorder is not appeared and the person is called a carrier.
So when a child is born by two carrier parents then there is a chance that a child will be affected if both the parents donate mutated genes.
In the case of Peter, since peter does not show this defect this means his maternal grandfather was affected by this disorder.