Reproduction in Pteridophytes

Q.

The heterosporous pteridophytes are

1. Lycopodium Pteris

2. Selaginella and Psilotum

3. Selaginella and Salvinia

4. Dryopteris and Adiantum

Q. Which of the following is a heterosporous plant?

1. Pteris
2. Adiantum
3. Salvinia
4. Dryopteris

Q.

Describe how sorus evolved in pteridophytes.

Q. Select the correct option regarding the ploidy level of different structures of an angiospermous ovule.

1. Nucellus = n, MMC = 2n, Functional megaspore = 2n, Funicle = n.
2. Nucellus = n, MMC = 2n, Functional megaspore = n, Funicle = n.
   
3. Nucellus = 2n, MMC = 2n, Functional megaspore = n, Funicle = 2n
4. Nucellus = 2n, MMC = 2n, Functional megaspore = 2n, Funicle = 2n.

Q. In Selaginella, microspores germinate to form

1. sporophyte
2. male gametophyte
3. female gametophyte
4. protonema

Q. Which of the following plants produces cones or strobili?

1. Funaria
2. Sphagnum
3. Equisetum
4. Pteris

Q. Ancestors of seed-bearing plants exhibit:

1. vascular bundles
2. seed habit
3. heterospory
4. heterotrichous

Q. In pteridophytes, the sporophyte is produced by the:

1. Gamete
2. Spore
3. Zygote
4. Gametophyte

Q.

A crucial requirement for reproduction in Pteridophytes, which limited their expansion is _____

1. Wind

2. Insects

3. Water

4. Organs