Four of the following statements about turtles are true. Which statement is false?
A. About 300 species of turtles currently exist.
B. Modern turtles do not have teeth.
C. Turtle feed only on plants.
D. Turtle shells are attached to their skeleton.
E. Turtle shells covered with keratin.
Answer: C
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Which best explains the process of meiosis?
A. The cells that result from meiosis I are haploid, and each chromosome consists of 1 chromatid. B. The cells that result from meiosis I are haploid, and each chromosome consists of 2 chromatids. C. The cells that result from meiosis II are haploid, and each chromosome consists of 2 chromatids. D. The cells that result from meiosis I are diploid, and each chromosome consists of 2 chromatids. E. The cells that result from meiosis I are diploid, and each chromosome consists of 1 chromatid.
In which of the following species would the number of males LEAST affect the rate of population
growth?
a. Northern elephant seals b. Trumpeter swans c. Canadian geese d. European rabbits e. Norwegian rats
Which statement is NOT true about water uptake in a plant root?
A. Water enters the root from the soil by osmosis. B. Water enters the cytoplasm of the root hairs by active transport. C. Water must enter the cytoplasm of the endodermal cells to get past the Casparian strip. D. Water travels by diffusion through the cell walls of the epidermis and cortex.
In gram negative bacteria a pilus allows it to
A) attach to surfaces, aiding in the formation of biofilms. B) move using an "oarlike" motion. C) transfer genetic material. D) infect their host.