A mutation allows only A gene activity in a developing flower. Which flower part(s) will develop in this plant?
A) sepals
B) petals
C) stamens
D) carpels
E) both sepals and petals
Answer: A
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Stem cells are produced and developed in the
A) bone marrow. B) brain. C) liver. D) stems of plants.
Which structure in the cell shown in Figure 7-3 above modifies, sorts, and packages proteins and other materials for storage or release from the cell?
A. Structure A B. Structure B C. Structure C D. Structure D
____ is NOT needed for the light-dependent reactions.
A. NADP B. ADP + P C. H2O D. CO2
Earth's ozone layer is extremely important because it
A) traps harmful infrared rays. B) blocks incoming UV radiation, which is damaging to animals and reduces photosynthesis in plants and algae. C) blocks incoming visible light to protect Earth against the greenhouse effect. D) maintains high carbon dioxide concentrations so that photosynthesis can occur. E) traps heat so that Earth's temperature does not fall too much.