Which of the following is NOT true concerning
nectar? It is
a. sucrose-rich.
b. a dilute fluid.
c. the only food for most butterflies.
d. rich in vitamins and minerals.
e. easy for pollinators to sip.
Answer: d
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As plants grow above ground, their water demands increase. One of the ways this demand is met is through the development of new root apical meristems. Why is it that root meristems can develop anywhere along the root?
A. Root meristems develop from the pericycle, a tissue present along the length of the root. B. Root meristems develop from the cortex, a tissue present along the length of the root. C. Root meristems develop only in regions where there is a high concentration of oxygen gas in the soil. D. Root meristems develop only in regions where there is a high concentration of nitrogen gas in the soil.
Homeostasis provides what kind of environment?
a. positive b. relatively constant around a set point c. limiting d. changing e. chemical and physical
The leafy fern that you might have as a house plant is the ____ generation
a. diploid sporophyte b. diploid gametophyte c. haploid sporophyte d. haploid gametophyte e. triploid sporophyte
Approximately what percentage of the human genome is identical to that of a chimpanzee?
A) 50.0% B) 62.3% C) 92.0% D) 98.8%