Question

Given below are the stages in the life cycle of pteridophytes. Arrange the following stages in the correct sequence.

1. Prothallus stage
2. Meiosis in spore mother cells
3. Fertilisation
4. Formation of archegonia and antheridia in gametophyte.
5. Transfer of antherozoids to the archegonia in presence of water.

Choose the correct answer from the options given below:

Options

• B, A, D, E, C

• B, A, E, C, D

• D, E, C, A, B

• E, D, C, B, A

Answer 1

B, A, D, E, C

Explanation:

The correct sequence of stages in the life cycle of pteridophytes is as follows:

B: Meiosis in spore mother cells leads to the formation of haploid spores.

A: These spores germinate to form the prothallus (gametophyte).

D: The prothallus develops archegonia and antheridia (sex organs).

E: Antherozoids (male gametes) swim through water to reach the archegonia.

C: Fertilisation occurs, forming a diploid zygote which will grow into the sporophyte.