Viroids infect
A) bacteria.
B) plants.
C) fungi.
D) plants and animals.
E) all organisms.
B
Bloom's Taxonomy: Knowledge
Section: Other Parasitic Particles: Viroids and Prions
Learning Outcome: 13.22
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Although especially useful to the giraffe, the rete mirabile is similar to a countercurrent heat exchange system in other related, less evolved, mammals. Thus a mechanism for _________________ homeostasis is likely to have evolved from a mechanism previously used for __________________ homeostasis.
A. blood pressure; pH B. temperature; blood pressure C. blood pressure; temperature D. pH; blood pressure Adult giraffes can be up to 20 ft. tall, and thus require special adaptations to maintain appropriate blood pressure. One adaptation is the rete mirabile, a group of blood vessels that form a web or net-like structure to slow blood flow.
The zona pellucida is used for what?
a. protection of a mammal egg before fertilization b. nutrition for a mammal egg before fertilization c. recognition for a sperm cell d. provides immunity for a mammal egg before fertilization
Do trees really sequester carbon permanently or just while they are alive? What will be an ideal response?
Ferns spread from place to place by means of
A. spores. B. pollen. C. seeds. D. eggs.