How do fungi reproduce sexually?
A) By the fusion of gametes from two different fungi
B) By the fusion of spores from two different fungi
C) By the fusion of hyphae from two different fungi
D) Fungi reproduce only by asexual reproduction
C
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How do fungi reproduce sexually?
A. Fungi reproduce only by asexual reproduction B. By the fusion of spores from the same individual fungus C. By the fusion of haploid cells from two different fungi D. By the fusion of zygotes from two different fungi
Whiteflies are common pest insects found on cotton, tomato, poinsettia, and many other plants. Nymphs are translucent and mostly sessile, feeding on their host plants' phloem (sap) from the undersides of leaves. T
hey undergo incomplete metamorphosis into winged adults. Because whitefly nymphs cannot escape predation by moving, you hypothesize that their translucent bodies make them hard to spot by predators. How could you directly test this hypothesis? A) Compare rates of predation on whitefly nymphs on plant leaves of different colors (for example, red vs. green poinsettia leaves). B) Compare rates of predation on whitefly nymphs coated with a nontoxic dye vs. undyed whitefly nymphs. C) Compare rates of predation on whitefly nymphs vs. whitefly adults. D) Compare rates of predation on whitefly nymphs by predators that are translucent vs. predators that are not translucent. E) Compare rates of predation on whitefly nymphs feeding on poisonous plants vs. those feeding on nonpoisonous plants.
The difference between an overt and a covert bioterrorism event is that a(n):
a. covert event is one that is carried out against undercover agents. b. covert event is announced, and an overt event is not announced. c. overt event is announced, and a covert event is not announced. d. overt event is one that is carried out in the air.
Myoglobin content is high in ____
a. fast anaerobic fibers only b. slow muscle fibers only c. slow muscle fibers and fast aerobic muscle fibers d. fast aerobic and fast anaerobic muscle fibers e. slow muscle fibers and fast anaerobic fibers