The standing crop biomass is the ____
a. amount of sunlight absorbed by the plants
b. amount of water accumulated per acre of crop plants
c. total dry weight of plants at a given time
d. number of plant species present
e. productivity of the plants
ANSWER: c
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Both plants and animals possess mitochondria, which are used for cellular respiration to make ATP
Indicate whether the statement is true or false.
__________ species of many plants (and a few
animals) originated by chromosome doublings and hybridizations. Fill in the blank(s) with the appropriate word(s).
Which of the following contains deoxyribose?
A) Ribosomal RNA B) DNA C) Messenger RNA D) Transfer RNA E) RNA polymerase
Sexual selection occurs when a female chooses a male that _____.
A. shares all resources B. is migratory C. provides a gift of prey D. can be a chameleon E. has never had a mate