Which of the following is (are) fixed action
pattern(s)?
a. A baby garter snake captures and eats a slug.
b. A chick’s gaping mouth induces a feeding
response in a parent bird
c. A European cuckoo hatchling pushes the host
bird’s egg out of the nest.
d. A male fruit fly waves his wings at a female fruit
fly during courtship.
e. All of these are fixed action patterns.
Answer: e
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Four of the following statements are true of predator-prey coevolution. Which one is FALSE?
a. Each species exerts selection pressure on the other. b. Predators are selective agents that favor improved prey defenses. c. Prey with better defenses are selective agents that favor better predator hunting skills. d. Coevolution only occurs in animals and is usually seen after one reproductive generation. e. Camouflage, warning coloration, and mimicry are all examples of coevolution tactics.
All of the following statements are true concerning
phloem tissue EXCEPT that a. it transports plant-manufactured products. b. it stores organic compounds. c. it is composed of living cells. d. only some of its cells have nuclei. e. it does not transport minerals.
Primary producers form the base of all food chains
Indicate whether the statement is true or false
The infective stage of the Cryptosporidium parvum is:
A. The Trophozoite B. The Cyst C. The Oocyst D. The Sporozoite E. The trypomastigote.