Plants do not have a germ line and gametes are derived from cell lines that are also responsible for the growth of the organism. Can you apply the disposable soma hypothesis?
a. Yes, trade-offs between reproduction and repair are still conceivable.
b. Yes, plants have a much higher physiological tolerance for the effects of mutations.
c. No, the distinction between somatic cells and germ line is at the heart of the hypothesis.
d. No, plants do not produce eggs or sperm but gametophytes that represent an additional genera-tion.
A
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The most serious consequence to humans of a decrease in global biodiversity would be the _____
A) increase in global warming and thinning of the ozone layer B) potential loss of ecosystem services on which people depend C) increase in the abundance and diversity of edge-adapted species D) loss of source of genetic diversity to preserve endangered species E) loss of species for use as crops.
In lakes, the nutrient-rich water near the shore is part of the ____
a. benthic zone b. abyssal zone c. limnetic zone d. littoral zone e. profundal zone
Which of the following is used by all living things as the carrier of genetic information?
A. Cell B. DNA C. Organ D. Molecule E. Population
A certain species of flea drinks only the blood of elephants. How would you best describe this flea's trophic level?
A) primary consumer B) secondary consumer C) decomposer D) producer