18. How does light affect the gas exchange in plants? A. It helps control the amount of carbon dioxide that enters the s
Posted: Fri Jun 10, 2022 11:29 am
18. How does light affect the gas exchange in plants?
A. It helps control the amount of carbon dioxide that enters the
stoma.
B. It regulates the amount of water inside the guard cells.
C. It regulates the size of the subsidiary cells surrounding the
guard cells.
D. It triggers the stomatal opening during the daytime.
19. How are the spiracles in insects similar to the stomata of
plants?
A. Spiracles provide a regulated opening for the entry and exit of
gases and water.
B. Spiracles and stomata both close during the night to avoid water
loss.
C. The aperture of spiracles is regulated by bean-like tracheal
cells.
D. The mechanism of opening and closing of spiracles are influenced
by light and temperature.
20. Which of the following statements describes the most
significant difference between signaling in plants and animals?
A. Animals highly rely on the transmission of electrical
signals.
B. Animals do not rely on chemical signaling molecules
C. Plants do not rely on chemical signaling molecules.
D. Plants highly rely on the transmission of both electrical and
chemical signals.
21. Why is puberty important in the human life cycle?
A. It allows the expression of sex-related traits. B. It allows
changes in the weight of individuals.
C. It increases the height of individuals.
D. It prepares an individual for reproduction.
22. Which of the following is correct about fertilization in
animals?
A. Apomixis is needed for the fusion of gametes.
B. Paternal and maternal DNA combine.
C. Polyspermy can happen during gamete fusion.
D. Slow block to polyspermy happens before the fast block.
A. It helps control the amount of carbon dioxide that enters the
stoma.
B. It regulates the amount of water inside the guard cells.
C. It regulates the size of the subsidiary cells surrounding the
guard cells.
D. It triggers the stomatal opening during the daytime.
19. How are the spiracles in insects similar to the stomata of
plants?
A. Spiracles provide a regulated opening for the entry and exit of
gases and water.
B. Spiracles and stomata both close during the night to avoid water
loss.
C. The aperture of spiracles is regulated by bean-like tracheal
cells.
D. The mechanism of opening and closing of spiracles are influenced
by light and temperature.
20. Which of the following statements describes the most
significant difference between signaling in plants and animals?
A. Animals highly rely on the transmission of electrical
signals.
B. Animals do not rely on chemical signaling molecules
C. Plants do not rely on chemical signaling molecules.
D. Plants highly rely on the transmission of both electrical and
chemical signals.
21. Why is puberty important in the human life cycle?
A. It allows the expression of sex-related traits. B. It allows
changes in the weight of individuals.
C. It increases the height of individuals.
D. It prepares an individual for reproduction.
22. Which of the following is correct about fertilization in
animals?
A. Apomixis is needed for the fusion of gametes.
B. Paternal and maternal DNA combine.
C. Polyspermy can happen during gamete fusion.
D. Slow block to polyspermy happens before the fast block.