Cotyledons are the __________ of a plant
a. developing seeds
b. first developing leaves
c. gametes
d. stored energy
B
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A cephalopod's tentacles are modified from its _____
A) mantle B) visceral mass C) foot D) shell E) radula
A researcher has been studying lichens in his hometown. Since he began his study, he has noticed several lichens dying in the vicinity of a new factory. What is most likely causing the decrease in lichen populations?
A. the diversion of water sources to the factory (i.e., lichens are drying out) B. an increase in air temperature, the result of CO2 emissions from the factory C. the blocking of sun by the factory (i.e., the lichens aren't getting enough sunlight) D. an increase in industrial pollutants in the area
The portion of the eye where photoreceptors are located is the ____
a. lens b. cornea c. pupil d. fovea e. retina
Name two genera of bacteria that produce endospores.
What will be an ideal response?