A Diagram of the Flow of Energy Through an Ecosystem

question 36

Multiple Choice

A diagram of the flow of energy through an ecosystem resembles a pyramid. This explains why

• A)some ecosystems have a higher primary productivity than others.
• B)animals need energy for maintenance.
• C)there is more grass than zebras, and more zebras than lions, on the African savanna.
• D)not every organism at one level of the food chain is eaten by an organism at the next level of the food chain.

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Definitions:

Corpus Luteum

A temporary endocrine structure in female ovaries that is involved in the production of hormones, estrogen, and progesterone after ovulation.

Pituitary

A small, pea-sized gland located at the base of the brain, crucial for controlling various hormones that regulate growth, metabolism, and reproductive functions.

Ovaries

Female reproductive organs in which eggs (ova) are produced, along with key hormones like estrogen and progesterone.

Endometrium

The mucous membrane lining the interior of the uterus, which thickens during the menstrual cycle in preparation for possible implantation of an embryo.