Mycorrhizae enhance plant nutrition mainly by _____
A) absorbing water and minerals through the fungal hyphae
B) providing sugar to root cells, which have no chloroplasts
C) converting atmospheric nitrogen to ammonia
D) enabling the roots to parasitize neighboring plants
E) stimulating the development of root hairs
Answer: A
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Cultures of genetically identical cells are called ____
a. bacteriophages b. clones c. prophages d. prions e. auxotrophs
Which of the following serves as a switching mechanism in the photoperiodic response in plants?
a. phytochrome b. auxin c. cryptochrome d. calmodulin e. phytoalexin
All of the following are members of suborder Mysticeti, except:
a. humpback whales. b. right whales. c. orcas. d. blue whales. e. fin whales.
Transcribe the following DNA sequence (non template strand): 5'-ATGGCCGGTTATTAAGCA-3'
a. 5'-ACGAATTATTGGCCGGTA-3' b. 5'-TACCGGCCAATAATTCGT-3' c. 5'-ATGGCCGGTTATTAAGCA-3' d. 5'-AUGGCCGGUUAUUAAGCA-3'