The ratio of carbon fixed (photosynthesis) per unit of water lost (transpiration) is called the ________ efficiency
Fill in the blank(s) with correct word
water-use
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The life and death of cells are governed by:
a. the laws of thermodynamics. b. only the first law of thermodynamics. c. only the second law of thermodynamics. d. only the third law of thermodynamics. e. the laws of dynamic equilibrium
Which of the following is not one of the four tissue types?
A. Squamal B. Nervous C. Connective D. Epithelial E. Muscle
Cottonwood, aspen, and willow trees have beige flowers, with no petals, that appear before the tree's leaves are out in the spring; and they are dioecious. What does this indicate about these trees?
A) Their insect pollinators are specialists. B) Early emerging insects are probably the pollinators. C) Their pollen is dispersed by wind. D) The trees are self-pollinating.
You are working in an aquarium that has been breeding an endangered species of fish for return into the wild. You have a batch of progeny from the first generation of breeding. The staff are discussing whether to return those fish to an area that has been completely depleted or add them to a partially depleted population. Considering the Allee effect, what do you say?
A. "They may do better in the empty area without any competition for food." B. "They may do better in the empty area without any competition for territory." C. "They may survive better in a large school, and will have an easier time finding mates." D. "The area with the other fish may reduce the partially depleted population's exposure to disease."