When Male Moose Engage in Their Annual Battles, Butting Heads

question 39

Multiple Choice

When male moose engage in their annual battles, butting heads with their oversized antlers, they are exhibiting ____ selection.

• A) stabilizing
• B) disruptive
• C) directional
• D) intrasexual
• E) intersexual

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Definitions:

Placental Mammal

Mammal in which maternal and embryonic bloodstreams exchange materials by means of a placenta.

Herbivores

Animals that primarily consume plant material such as leaves, stems, and roots, playing key roles in ecosystems by transferring energy from plants to other trophic levels.

Rodents

A diverse group of mammals characterized by their continuously growing incisors, including mice, rats, squirrels, and beavers.

Lobe-Finned Fishes

Fish species characterized by fleshy, lobed, paired fins, which are believed to be the ancestors of amphibians and other land vertebrates.