Earthworms

question 147

Multiple Choice

Earthworms

• A) are widely distributed over the Earth.
• B) excrete casts.
• C) are known by the Latin name Bubulcus ibis.
• D) usually deplete soil fertility.
• E) are correctly described by all of the above.

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Definitions:

Egg

The female reproductive cell or gamete in animals and plants; an ovum.

Vagina

A muscular tube connecting the external genitals to the cervix of the uterus in females, part of the reproductive system.

Menstrual Flow

The discharge of blood and tissue from the lining of the uterus that occurs in the absence of pregnancy.

Birth Canal

The passage comprising the cervix, vagina, and vulva through which a fetus passes during childbirth.