In Vertebrate Animals, Spermatogenesis and Oogenesis Differ in That

question 31

Multiple Choice

In vertebrate animals, spermatogenesis and oogenesis differ in that

• A) oogenesis begins at the onset of sexual maturity, whereas spermatogenesis begins during embryonic development.
• B) oogenesis produces four haploid cells, whereas spermatogenesis produces only one functional spermatozoon.
• C) cytokinesis is unequal in oogenesis, whereas it is equal in spermatogenesis.
• D) oogenesis ends at menopause, whereas spermatogenesis is finished before birth.
• E) spermatogenesis is not completed until after fertilization occurs, but oogenesis is completed by the time a girl is born.

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Definitions:

Scratch Marks

Linear abrasions on a rock surface, often caused by the movement of a glacier and carrying debris across the rock.

Folded Metamorphic Rocks

Metamorphic rocks that have been bent or curved into folds due to intense heat and pressure over long periods.

Fault Scarp

A fault scarp is a steep incline or cliff formed by the movement of a fault, where one side of the fault has moved vertically with respect to the other.

Columnar Joints

Natural formations of vertically oriented, hexagonal columns of rock, usually found in volcanic basalt, resulting from the cooling and contraction of lava.