Plant Kingdom

Which one of the following is a correct statement?

1. Pteridophyte gametophyte has a protonemal and leafy stage.
2. In gymnosperms, female gametophyte is free-living.
3. Antheridiophores and archegoniophores are present in pteridophytes.
4. Origin of seed habit can be traced in pteridophytes.

Cycas and Adiantum resemble each other in having

1. seeds
2. motile sperms
3. cambium
4. vessels

Selaginella and Salvinia are considered to represent a significant step toward evolution of seed habit because

1. female gametophyte is free and gets dispersed like seeds.
2. female gametophyte lacks archegonia.
3. megaspores possess endosperm and embryo surrounded by seed coat.
4. embryo develops in female gametophyte which is retained on parent sporophyte.

Consider the following four statements whether they are correct or wrong. The two wrong statements together are

1. A and C
2. A and D
3. B and C
4. A and B.

Examine the figure given below and select the correct option giving all the four parts (A, B, C and D) rightly identified. [Figure]

1. (A) Archegoniophore (B) Female thallus (C) Gemma cup (D) Rhizoids
2. (A) Antheridiophore (B) Male thallus (C) Globule (D) Roots
3. (A) Archegoniophore (B) Female thallus (C) Bud (D) Foot
4. (A) Seta (B) Sporophyte (C) Protonema (D) Rhizoids

The gametophyte is not an independent, free-living generation in

1. Polytrichum
2. Adiantum
3. Marchantia
4. Pinus

Compared with the gametophytes of the bryophytes, the gametophytes of vascular plants tend to be

1. smaller but to have larger sex organs
2. larger but to have smaller sex organs
3. larger and to have larger sex organs
4. smaller and to have smaller sex organs

Archegoniophore is present in

1. Marchantia
2. Chara
3. Adiantum
4. Funaria

A prokaryotic autotrophic nitrogen fixing symbiont is found in

1. Alnus
2. Cycas
3. Cicer
4. Pisum

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? [Figure]

1. (A) Funaria, (B) Adiantum, (C) Salvinia, (D) Riccia
2. (A) Equisetum, (B) Ginkgo, (C) Selaginella, (D) Lycopodium
3. (A) Chara, (B) Marchantia, (C) Fucus, (D) Pinus
4. (A) Selaginella, (B) Equisetum, (C) Salvinia, (D) Ginkgo