Pollen germination refers to the process of
A. sperm development.
B. double fertilization.
C. pollen dispersal.
D. development of the pollen tube.
E. pollen attachment to the stigma.
Answer: D
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What happens when a photosystem absorbs energy? a. Protons are ejected and enter an electron transfer chain
b. Carbon dioxide is formed. c. Glucose is broken down. d. Electrons are ejected and enter an electron transfer chain. e. Electrons are absorbed and released from the electron transfer chain.
Some closely related species do not interbreed simply because the timing of their reproduction differs. What type of reproductive isolation is this?
a. mechanical b. ecological c. temporal d. behavioral e. gamete incompatibility
Kelps are a form of what group of protists?
a. brown algae b. slime molds c. water molds d. ciliates e. dinoflagellates
Which of the following statements concerning nucleotide excision repair is FALSE?
a. It is a type of mismatch repair. b. It involves a nuclease. c. It involves a DNA polymerase. d. It involves DNA ligase. e. It is implicated in xeroderma pigmentosum.