Development of Endosperm

Q.

What is totipotency? Give example.

Q.

Coconut water from a tender coconut is:

1. Degenerated nucellus

2. Immature embryo

3. Free nuclear endosperm

4. Innermost layers of the seed coat

Q.

What is tigellum?

Q. In which of the following plants, endosperm persists in the mature seed?

1. Pea
2. Groundnut
3. Beans
4. Castor

Q. The edible part of the coconut is ______.

1. free-nuclear endosperm
2. pericarp
3. cellular endosperm
4. both a and c

Q.

Ploidy level of endosperm in angiosperms is generally

1. n

2. 2n

3. 3n

4. 6n

Q. In which of the following plants, endosperm persists in the mature seed?

1. Pea
2. Groundnut
3. Beans
4. Castor

Q. Milky water of tender coconut is

1. liquid gametes
2. liquid endosperm
3. liquid female gametophyte
4. liquid embryo
   
   

Q.

Regarding the assertion and reason, select the right option.

Assertion (A): Endosperm development precedes embryo development.

Reason(R): Endosperm provides assured nutrition to the developing embryo.

1. Both A and R are true and R explains A

2. Both A and R are true and R does not explain A

3. A is true and R is false

4. Both A and R are false

Q.

The milky water in tender coconut is free __ endosperm.

Q. Endosperm cell of an angiosperm has 24 chromosomes. The number of chromosomes in the zygote and gametes would be____ and ___ respectively.

1. 24 and 12
2. 24 and 8
3. 16 and 8
4. 16 and 12

Q. Study the following statements and select the correct option.
A. Tapetum nourishes the developing pollen grains
B. Hilum represents the junction between ovule and funicle
C. In aquatic plants such as water hyacinth and water lily, pollination is by water.
D. The primary endosperm nucleus is triploid

1. A and B are correct but C and D are incorrect
2. A, B and D are correct but C is incorrect
3. B, C and D are correct but A is incorrect
4. A and D are correct but B and C are incorrect

Q.

The most common type of endosperm development is

1. Cellular type

2. Cell Helobial type

3. Helobial type

4. Nuclear type

Q. The edible part of the coconut is ______.

1. free-nuclear endosperm
2. pericarp
3. cellular endosperm
4. both a and c

Q. Coconut water is made up of while the surrounding white kernel constitutes .

1. cellular endosperm
2. nuclear endosperm
3. helobial endosperm
4. solid endosperm

Q. Assertion (A): Endosperm development precedes embryo development.
Reason(R): During the endosperm development, initially the PEN undergoes successive nuclear divisions to give rise to free nuclei.

1. Both assertion and reason are true and reason is the correct explanation of assertion.
2. Both assertion and reason are true but reason is not the correct explanation of assertion.
3. The assertion is true but reason is false.
4. Both assertion and reason are false.

Q.

What would be the number of chromosomes of the aleurone cells of a plant with 42 chromosomes in its root tip cells?

1. 63

2. 84

3. 21

4. 42