Which of the following is an extension of a lobe of the cytoplasm, and is used by some protists for movement?
a. a pilus
b. a cilium
c. a pseudopod
d. a gullet
Ans: c. a pseudopod
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A community
A. is a population living in a certain habitat. B. is a portion of a species making its home within a certain habitat. C. includes those animals that only visit a habitat for food and drink. D. includes all organisms that interact with one another within a local area.
All of the following examples are Protists except:
A. Amoeba B. Seaweed C. Volvox D. Moneran
At night, when little red light is available to the plants in an area, what occurs?
A) Pfr is converted to Pr. B) Pr and Pfr are both formed from inactive phytochrome. C) Pr and Pfr are both destroyed. D) Pr is converted to Pfr. E) Pr stimulates flowering.
Which is a description of scirrhous-type tumors?
a. form small nipple-like projection b. form microscopic glandular-type sacs c. hard densely packed tumor cells d. resemble squamous epithelial cells e. contain a variety of tumor cells