Which of the following statements regarding CAM plants is true?
A) Stomata are open during the day.
B) Malate is stored in large vacuoles.
C) CO2 is transported directly into mesophyll cells.
D) They assimilate 25% less CO2 than C3 plants.
E) both choices B and C
B) Malate is stored in large vacuoles
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Which of the following is not part of the body's first line of defense?
A) fever B) intact skin C) mucus D) the pH of the stomach contents
Select the plant behavior that arises from internal stimuli.
A. Phototropism. B. Thigmotropism. C. Cytokinins promoting cell division. D. Nondevelopmental formation of aerenchyma.
Carnivorous plants evolved because which of the following nutrients is often extremely limited in their habitats?
A. carbon B. CO2 C. O2 D. nitrogen E. iron
Process during which a single sperm penetrates the secondary oocyte, which will eventually result in the fusion of the egg and sperm nuclei and the development of a zygote. _____
A) Human chorionic gonadotropin
B) Zygote
C) Chorion
D) Morula
E) Folic acid
F) Fertilization
G) Blastocyst
H) Parturition
I) Cleavage
J) Ovulation
K) Placenta
L) Implantation