Antheridia and archegonia are the two types of ____ present in bryophytes
a. sporophytes
b. sporangia
c. gametangia
d. gemmae
e. thalli
ANSWER: c
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Plant growth and development is guided by
a. hormones. b. other signaling molecules. c. water availability. d. day length. e. all of these.
_____ refers to the process by which microbes gain a more stable foothold at the portal of entry though interaction of their molecules with host cell receptors.
Fill in the blank(s) with the appropriate word(s).
Two semelparous species of fish lay about 100 eggs when reproducing. One reaches reproductive age a year before the other. Assuming there is no competition for resources in the lake they inhabit (population density is low), which species has higher fitness?
A. The species that reproduces earlier has higher fitness, as their genes will spread faster B. The species that reproduces later has higher fitness as they also live longer C. Both have the same fitness as they lay the same number of eggs
RNA serves to convert the information stored in DNA to ________.
A. lipids B. RNA C. carbohydrates D. protein