Which of the following is true?
a. No species of slime mold form colonies.
b. All species of slime mold form colonies.
c. Slime molds form colonies only for reproduction.
d. Some species of slime molds form colonies.
Ans: d. Some species of slime molds form colonies.
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Movement in multicellular animals is dependent on:
A. a mucous coating B. the action of muscle cells. C. cilia and flagella. D. movement of mitochondria.
Blood rich in oxygen is what color?
a. yellow b. pink c. bright red d. blue e. purple
Which of the following materials is not used in making a wet mount of cheek epithelial cells?
As a naturalist, you are responsible for training volunteers in the identification of the types of amphibians. The volunteers will use this information to correctly describe the animals to school groups that will visit your nature center. The training documentation for the volunteers lists important characteristics of the different groups of amphibian, but you notice that one of the items on the list is incorrect. Indicate which description is not correct.
A. Frogs and toads have external fertilization whereas salamanders and caecilians have internal fertilization. B. Frogs, toads, and most salamanders have four legs whereas caecilians are legless. C. Adult frogs, toads, and salamanders are predators of insects and other small animals whereas caecilians are herbivores. D. Frogs and toads lay eggs whereas some caecilians lay eggs and others give birth to live young. E. Salamanders and caecilians have external tails whereas frogs and toads do not.