Post Fertilisation Structures and Events

Q.

The hilum is a scar on the?

1. Seed, where micropyle was present.

2. Fruit, where style was present.

3. Fruit, where it was attached to the pedicel.

4. Seed, where funicle was attached.

Q. Endosperm development precedes embryo development because_____________.

1. cells of PEN divide faster than cells of zygote.
2. the endosperm is triploid and zygote is diploid.
3. the developing embryo needs nutrition.
4. all of the above

Q.

Fruits developing from an unfertilised ovary are

1. True fruits

2. False fruits

3. Accessory fruits

4. Parthenocarpic fruits

Q.

A plant hormone chiefly connected with the process of cell-division is

1. IBA

2. kinetin

3. IAA.

4. 2, 4-D

Q. Which of the following changes does not occur in the ovary after fertilisation in flowering plants?

1. Ovary wall $\to$ Pericarp
2. Ovary $\to$ Fruit
3. Ovule $\to$ Fruit wall
4. Integument $\to$ Seed coat

Q.

Plant growth movements are induced by phytohormones.

1. True

2. False

Q. Embryo develops first after double fertilisation, followed by the endosperm development.

1. True
2. False

Q. Identify the wrong statement regarding post-fertilisation development.

1. The ovary wall develops into pericarp
2. The outer integument of ovule develops into tegmen
3. The primery endosperm nucleus develops into endosperm
4. The ovule develops into seed