In your garden you decide to plant potatoes. You watch the above-ground development of your plant and decide to categorize the growth into four main stages:
1. The initial development of the stem and leaves (shoot)
2. The development of flowers and general growth of the shoot
3. A vegetative period where not much growth seems to be happening
4. The harvest of your potato crop (digging up the tubers formed near the base of the stem)
In stage 2, which is a bigger "sink" for phloem flow?
A. development of flowers
B. growth of the shoot
C. There is insufficient information to answer
the question.
C
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The atmospheric pressure on top of Mt. Everest is only about 238 mmHg, so the approximate partial pressure of oxygen there is
A. 2.4 mmHg. B. 50 mmHg. C. 186 mmHg. D. 238 mmHg. E. 476 mmHg.
Anindividual who does not produce bile has the most trouble digesting ____
a. carbohydrates
b. proteins c. fats d. nucleic acids e. essential vitamins
Cones
a. detect coarse perception of movement. b. detect very dim light. c. detect changes in light intensity across the visual field in dark places. d. contain disks packed with the visual pigment rhodopsin. e. detect bright light.
How do daughter cells compare to parent cells at the end of mitosis and cytokinesis?
A) They have half the number of chromosomes B) They have exact copies of the same chromosomes C) They have double the number of chromosomes