Gametophyte in the pteridophytes is

How many statements are correct with respect to gametophyte?
1. Two 
2. Three
3. Four 
4. One

A Prothallus is

1. A structure in pteridophytes formed before the thallus develops

2. A sporophytic free living structure formed in pteridophytes

3. A gametophyte free living structure formed in pteridophytes

4. A primitive structure formed after fertilization in pteridophytes

In Pteridophytes reduction division occurs
during
1. spore formation
2. gamete formation
3. sporophyte formation
4. gametophyte germination

A feature common in gametophyte of both mosses and maximum ferns is-

1. Independent existence

2. Both are monoecious in nature

3. Presence of vascular tissue

4. Both are filamentous

In ferns, Meiosis takes place at the time of:

1. Spore formation

2. Spore germination

3. Gamete formation

4. Antheridia and archegonia formation

Examine the figures A, B, C and D. In which one of the four options all the items, A, B, C and D are correct?

Options : 

Match the following selected the correct option.

1. A - (iv), B - (ii), C - (i), D - (iii)

2. A - (iv), B - (i), C - (ii), D - (iii)

3. A - (ii), B - (iii), C - (iv), D - (i)

4. A - (i), B - (iv), C - (iii), D - (ii)

Pick the correct group consisting of all genera exhibiting homospory.

The spreading of living pteridophyte is limited and is restricted to narrow geographical region because of

1. Growth requirements of gametophyte (cool, damp and shady places).

2. Requirement of water for fertilisation.

3. Absence of stomata in leaf and absence of vascular tissue.

4. Both 1. and 2..

Development of the zygotes into young embryo takes within the female gametophytes in

1. Adiantum.

2. Selaginella.

3. Riccia.

4. Batrachospermum.