You discover two species of sponge, one red and one blue, near a deep sea vent. You genetically engineer the red sponge to produce the same CAMs as the blue sponge. You then take each sponge-the blue sponge and the engineered sponge-dissociate their cells, and mix the red and blue cells together. Which of the following will you most likely observe?
A. a bunch of red and blue cells that stay dissociated
B. one sponge with alternating red and blue layers of cells
C. one blue sponge and one red sponge
D. one sponge with blue cells and red cells randomly distributed
E. one sponge with a red side and a blue side
Answer: D
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Which of the following biomes has the highest variation in annual temperature?
A) subtropical deserts B) arctic tundra C) temperate forests D) temperate grasslands E) boreal forests / taiga
True or False. The fact that two independent methodologies for investigating the history of life on Earth (phylogenies and the fossil record) agree is powerful evidence of evolution
A. true B. false
Which of the following generally causes stomata to open?
a. release of abscisic acid by the roots b. a drop in CO2 concentration in leaf air spaces c. exposure to red light d. a drop in O2 concentration in leaf air spaces e. an increase in CO2 concentration in the leaf air spaces
The chief function of root hairs is to
A) decrease the anchoring power of roots. B) increase the surface area for efficient absorption of water and minerals. C) provide a direct passageway from the soil to the vascular cylinder.