Which of the following does NOT describe a keystone species?
a. a species on which other species depend
b. a species whose removal would have a dramatic effect on the community
c. a species that plays a central role in holding the community together
d. a species that always occupies the highest trophic level in a community
e. a species whose removal would destabilize the food web
Answer: d. a species that always occupies the highest trophic level in a community
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A plant that has the mutant form of the WEREWOLF gene (wer) would be identifiable by
A. the excessive number of vascular bundles in stem. B. the lack of fibers in the outer portions of the stem. C. the abundance of microscopic hairs on the root. D. the extra thick layer of mesophyll cells in the leaf. E. the lack of microscopic hairs along the epidermis of the root.
The processes of converting DNA into RNA then RNA into proteins is collectively referred to as which of the following?
a. Chargaff’s rule b. Mendel’s law of segregation c. Darwin’s theory of evolution d. the central dogma
The evolution of seeds allowed for:
a. the development of an independent sporophyte. b. coevolution with animal pollinators. c. heterospory—the development of male and female gametophytes. d. plants to colonize dryer climates. e. All of the above are correct.
Any drug that acts against a disease is called a(n) (analog/antibiotic/chemotherapeutic) agent
What will be an ideal response?