What reproductive advantage do flowers give a flowering plant?
What will be an ideal response?
They protect the gametophyte and often serve to attract animals to help cross-pollinate.
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Chlorination of water supplies represents an epidemiological technique directed at
A. eliminating susceptible individuals. B. sterilizing water. C. eliminating sources of infection. D. improving the palatability of water.
Blood that flows through capillaries in the small intestine flows next through vessels in the _____
a. stomach c. pancreas b. heart d. liver
The major difference between a mature zygospore
and a spore produced in a sporangium is that the mature zygospore a. produces gametes. b. produces a diploid mycelium. c. is diploid. d. is produced asexually. e. undergoes mitosis.
An ABC transporter:a
is a type of water channel. b. uses the energy of ATP to transport solutes. c. uses gated channels to transport ADP. d. is present in kidney tubules and prevents dehydration. e. is a type of porin.