Reproduction Quiz

When compared to organisms that utilize process A, organisms that utilize process B would most likely produce offspring with

• a greater variety of genetic combinations

• fewer genetic differences

• more genetic combinations

• more DNA within each nucleus

One of the largest and oldest organisms on Earth is located in Fishlake National Forest in Utah. Pando is an 80,000-year-old grove of aspen trees that covers 100 acres. Although it looks like a forest, DNA analysis of several of the “trees” has confirmed it is really just one huge organism. Therefore, the “trees” must have been reproduced

• sexually and have genetic variability

• asexually and have genetic variability

• sexually and are genetically identical

• asexually and are genetically identical

Many female mammals, such as dogs, give birth to litters consisting of multiple offspring. All of the characteristics described below are reproductive adaptations that female dogs have for giving birth and caring for several offspring at once, except

• a specialized structure for internal development of several young

• several pairs of mammary glands that provide milk for their pups

• ovaries capable of releasing many gametes at one time for fertilization

• a pancreas that produces excess insulin to trigger the release of eggs

The graph below shows the relative concentrations of certain hormones in the blood during the human female reproductive cycle. Which hormone has the lowest concentration on which day?

• hormone A on day 4

• hormone B on day 2

• hormone C on day 12

• hormone D on day 20

The diagram to the right represents a system in the human body. The primary function of structure X is to

• produce energy needed for sperm to move

• provide food for the sperm to carry to the egg

• produce and store urine

• form gametes that may be involved in fertilization

A large number of sperm cells are produced by males every day. This large number of sperm cells increases the chance that

• at least one sperm cell will be reached when the eggs swim toward the sperm cells in the ovary

• several sperm cells will unite with an egg so the fertilized egg will develop properly

• some of the sperm cells will survive to reach the egg

• enough sperm cells will be present to transport the egg from where it is produced to

  where it develops into a fetus

Which hormone does not directly regulate human reproductive cycles?

• testosterone

• insulin

• estrogen

• progesterone

A human cell that contains all of the information necessary for the growth and development of a complete organism is

• a sperm cell

• a gamete

• a zygote

• an egg cell

Which structure produces cells that have the potential to become gametes?

• a

• b

• c

• d

One function of the male reproductive system in mammals is to

• produce insulin necessary for sexual reproduction

• transport eggs necessary for fertilization

• allow for delivery of gametes needed for reproduction

• provide protection for the developing zygote