Immediately prior to flight in cool temperatures, some insects
A) must consume hundreds of calories.
B) increase heat production by shivering flight muscles of the thorax.
C) seek shade.
D) increase anaerobic respiration.
B
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Pleiotropy refers to:
A. the interaction of two genes affecting a single trait. B. the interaction of multiple genes affecting multiple traits. C. the interaction of multiple genes affecting a single trait. D. a single gene having multiple effects. E. two different norms of reaction for a single trait.
Which of the following is associated with the male organs of an angiosperm?
a. stamens b. carpel c. petal d. stigma
Experiments with __________ revealed that
__________ is the main carbohydrate that is transported in phloem. a. bees; sucrose b. aphids; starch c. bees; starch d. ants; sucrose e. aphids; sucrose
What type of immunity is NOT due to antibodies?
A) Innate immunity B) Naturally acquired active immunity C) Naturally acquired passive immunity D) Artificially acquired active immunity E) Artificially acquired passive immunity