The number of mitotic generations required to form a mature embryo sac from megaspore in most of the flowering plants is

1. One 

2. Two 

3. Three

4. Four

Hydrophily is limited to 30 genera which are mostly

1. Gymnosperms

2. Monocots

3. Dicots

4. More than one option is correct

Pollen pistil interaction is

1. Chemically mediated process

2. Dynamic process

3. Genetically controlled process

4. More than one option is correct

The ovule of an angiosperm is technically equivalent to

1. Megasporangium

2. Megasporophyll

3. Megaspore mother cell

4. Megaspore

Examine the figure given below and select the right option giving all the four parts a,b,c and d. Correctly identify 

Nucellar polyembryony is reported in species of

1. Brassica

2. Citrus

3. Gossypium

4. Triticum

An pollen tube liberated the male gametes into 

1. Degenerating synergid

2. Intact synergid

3. Antipodals

4. Egg

Choose the correct option with respect to the function of the germ pore.

1. It allows growth of pollen tube

2. It allows water absorption in seed

3. It helps dehiscence of pollen grain

4. More than one option is correct

The pollen grain represents

1. Male gamete

2. Male gametophyte

3. Microsporophyll

4. Microsporangium

Following are four statements. Find out the correct statements

(i) Microsporangia has four layers, outer three are protective and inner one is nutritive

(ii) Each cell of sporogenous tissue within micorsporangia is capable of giving rise to a microspore tetrad.

(iii) Dehydration of anther is important for separation of pollen grains in a tetrad.

(iv) The generative cell in a pollen grain is small with respect to the vegetative cell and it floats in the cytoplasm of vegetative cell.

Options

1. All are correct

2. Only (i), (ii) and (iii) is correct

3. Except (ii) all are correct

4. Expect (iii) all are correct.