Which type of photosynthesis do most plants use?
A) photorespiration B) C3 C) C4 D) CAM
Answer: B
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Which of the following is true of species diversity over time?
1.The distribution pattern of protozoans most closely matches that of insects.
2.Angiosperm diversity in the Paleozoic most closely matches that of insects.
3.Trilobites expanded in the Mesozoic before going extinct.
4.Insects have had the greatest species expansion during the Cenozoic.
The cilia and flagella of eukaryotic cells are composed of _____.
a) pili b) tonofilaments c) microfilaments d) intermediate filaments e) microtubules
Which of the following serves as a temporary endocrine gland in females, and what does it secrete?
a. the corpus luteum; estrogen and progesterone b. the uterus; luteinizing hormone and follicle-stimulating hormone c. the endometrium; estrogen and follicle-stimulating hormone d. the ovaries; estrogen and luteinizing hormone
A number of populations of different species interacting with one another in a natural environment, such as a rotten log, is called
Select one: a. competition. b. a community. c. a biome. d. predation. e. symbiosis.