BOP CHAPTER 18 TEST QUESTIONS AND ANSWERS ALL CORRECT 2024/2025 LATEST UPDATED
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BOP CHAPTER 18 TEST QUESTIONS AND ANSWERS ALL CORRECT 2024/2025 LATEST UPDATED
The daughter cells produced by a microsporocyte are:
a. microspore mother cells.
b. microspores.
c. pollen grains.
d. prothallial cells.
e. generative cells. - Answer- B
In pines, the immature male gametophy...
BOP CHAPTER 18 TEST QUESTIONS
AND ANSWERS ALL CORRECT
2024/2025 LATEST UPDATED
The daughter cells produced by a microsporocyte are:
a. microspore mother cells.
b. microspores.
c. pollen grains.
d. prothallial cells.
e. generative cells. - Answer- B
In pines, the immature male gametophyte consists of:
a. two prothallial cells, one generative cell, and one tube cell.
b. one prothallial cell, two generative cells, and one tube cell.
c. one prothallial cell, one generative cell, and two tube cells.
d. two prothallial cells, two generative cells, and one tube cell.
e. one prothallial cell, one generative cell, and one tube cell. - Answer- A
The seed-scale complex of an ovulate cone consists of:
a. a megasporophyll and two ovules.
b. a megasporophyll and one bract.
c. an ovuliferous scale and two ovules.
d. two ovules and two bracts.
e. an ovuliferous scale, two ovules, and one bract. - Answer- E
In pines, a megaspore mother cell divides to give rise to four ______, of which ______
disintegrate(s).
a. megaspores; one
b. megaspores; two
c. megaspores; three
d. megasporocytes; two
e. megasporocytes; three - Answer- C
In the pine life cycle, a pollen grain germinates shortly after it:
, a. enters the pollen tube.
b. undergoes meiosis.
c. forms microspores.
d. comes in contact with the nucellus.
e. comes in contact with an archegonium. - Answer- D
In pines, the generative cell of the male gametophyte divides to produce:
a. two sperm cells.
b. one sterile cell and one spermatogenous cell.
c. one sterile cell and one sperm cell.
d. two spermatogenous cells.
e. two sterile cells. - Answer- B
In pines, the mature male gametophyte consists of:
a. one tube cell and one generative cell.
b. one tube cell, one sterile cell, and one spermatogenous cell.
c. two prothallial cells, one tube cell, and one generative cell.
d. two prothallial cells, one tube cell, one sterile cell, and one spermatogenous cell.
e. two prothallial cells, one tube cell, one sterile cell, and two sperm. - Answer- E
Which of the following statements about the embryogeny of pine is FALSE?
a. Three types of polyembryony occur in most species.
b. Four tiers of embryonic cells form at the lower end of the archegonium.
c. Suspensor cells force the embryos through the wall of the archegonium.
d. An embryo begins to develop from each of the four cells farthest from the micropyle.
e. The integument develops into a seed coat. - Answer- A
In a conifer seed, the three different generations are represented by the:
a. integument, nucellus, and egg.
b. seed coat, embryo, and food supply.
c. seed coat, archegonium, and food supply.
d. integument, ovule, and embryo.
e. integument, megasporangium, and archegonium - Answer- B
Which of the following statements about pine seeds is FALSE?
a. They are often shed from the cones during the first year following pollination.
b. They are often dispersed by the wind.
c. Some are dispersed only after the cones are scorched by fire.
d. Some are dispersed by birds.
e. Some are winged. - Answer- A
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