It has been decided, by a group of scientific experts, that lack of internal temperature regulation, presence of waterproof skin made of scales, and a waterproof egg are the three main characteristics that should be used to classify organisms as
reptiles. This decision is most consistent with:
A) natural selection. B) adaptive radiation.
C) cladistic taxonomy. D) classical taxonomy.
Answer: D
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A high school student is carrying out a science project. She plants alfalfa seeds, and encloses an area planted with one set of alfalfa seeds within a box covered in red cellophane (which reflects light of red wavelengths)
She leaves another set of planted alfalfa seeds uncovered. What do you expect she'll find in these two alfalfa populations when her science project is over? A. Germination rates will be the same in both seed sets. B. The germination rate will be lower in the uncovered seed set. C. The germination rate will be higher in the uncovered seed set.
Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer?
What will be an ideal response?
Small, photosynthetic protists found in aquatic habitats are collectively called
a. zooplankton. b. phytoplankton. c. phagoplankton. d. bryophytes. e. chrysophytes.
An example of an animal with an incomplete gut is a(n)
A. planarian. B. earthworm. C. squid. D. human. E. grasshopper.