Both C4 and CAM plants have modified carbon fixation. How do they each perform carbon fixation and what is the benefit of each of these types of carbon fixation?
What will be an ideal response?
C4 plants have spatially separated carbon fixation from photosynthesis, reducing the negative impact of photorespiration. CAM plants have temporally separated carbon fixation from photosynthesis, minimizing water loss that would result from opening their stomata during the day.
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Research recently revealed that many plant stress hormones have high potential to be developed as anti-cancer agents. In fact, they were shown to induce cell death and inhibit proliferation and migration of several cancer cell types. Which group of compounds in plants is produced in times of mechanical injury stress such as when a tomato plant is being chewed by a caterpillar?
a. oligosaccharins b. gibberellins c. jasmonates d. abscisic acids
Which branch of this phylogenetic tree identifies Bacteria?
a. A b. B c. C d. D e. E
Which of the following plants both parasitizes other plants and performs photosynthesis?
a. snow plant b. lady-of-the-night orchid c. mistletoe d. cobra lily e. dodder
__________ are regions in an organism’s DNA that
encode information about heritable traits. Fill in the blank(s) with the appropriate word(s).