Regents Review: Reproduction

The diagram below represents structures found in the female reproductive system.

If the areas labeled A were completely blocked on both sides, the most likely result would be that

• egg and estrogen production would stop

• sperm and insulin production would stop

• fertilization would not occur

• an embryo would develop

The diagram below represents events that occur during sexual reproduction.

The stages labeled A, B, and C are necessary to ensure that the offspring will inherit

• half of their chromosomes from each parent

• double the amount of chromosomes from each parent

• pairs of chromosomes from each parent

• double the amount of chromosomes from one parent

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Which statement best describes an important process carried out by structure X?

• Milk passes from the mother to the fetus.

• Materials are exchanged between fetal and maternal blood.

• Maternal blood is converted into fetal blood

• Oxygen diffuses from fetal blood to maternal blood.

A reproductive system is represented in the diagram below. Which structure is correctly paired with its reproductive function?

• A – pathway of gametes

• B – synthesis of progesterone

• C – production of sperm

• D – regulation of homeostasis

The diagram below represents a developing fetus in a human.

What would most likely happen if structure X were damaged in the early stages of pregnancy?

• The genes from the mother would not be turned on in the fetus.

• The nutrients necessary for development would not be able to reach the fetus.

• the fertilized egg would not be able to travel from the ovary to the uterus.

• Development would take longer since the fetus would have to synthesize nutrients.

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The reproductive structure in a female mammal that produces sex cells is the

• ovary

• testes

• uterus

• placenta

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Which population in the chart below has the best chance for survival in a rapidly changing environment?

• 1

• 2

• 3

• 4

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A dog gave birth to the three puppies shown in the photograph below. One of the puppies has darker fur on its face than the other two.

Which two biological processes account for this difference between the puppies?

• meiosis and recombination

• meiosis and cloning

• mitosis and differentiation

• mitosis and cloning

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After a zygote is formed, specialization of cells occurs. Through which process do the cells of a zygote become specialized?

• sexual reproduction

• meiosis

• fertilization

• differentiation

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In humans, the placenta is essential to the embryo for

• nutrition, excretion, and reproduction

• respiration, nutrition, and excretion

• movement, reproduction, and nutrition

• coordination, movement, and growth

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