Shoots that grow vertically toward the sun can be characterized as _____
A) positive for phototropism and negative for gravitropism
B) neutral for phototropism and positive for gravitropism
C) negative for phototropism and positive for gravitropism
D) positive for phototropism and neutral for gravitropism
A
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What is the most common way of introducing novel genotypic and phenotypic variants into a population?
a. gene flow b. genetic drift c. mutation d. natural selection
One advantage that angiosperms have is a unique triploid ____, a nutritive tissue produced during
fertilization.
a. seed coat b. endosperm c. ovule d. pollen sac e. ovary
Which term refers to the variety of metabolic compounds in an ecosystem?
a. chemical diversity b. genetic diversity c. ecosystem diversity d. biodiversity hotspots
By what process do body cells become specialized?
a) regeneration b) reproduction c) differentiation d) development