Question

Which of the following sequences is correct with regard to the life cycle of pteridophytes?

• A. Gametophyte, spores, meiosis, sporophyte
• B. Sporophyte, meiosis, spores, gametophyte
• C. Sporophyte, mitosis, gametes, zygote
• D. Gametophyte, meiosis, gametes, zygote

Answer 1

The correct option is B Sporophyte, meiosis, spores, gametophyte

Life cycle of pteridophytes (haplo-diplontic life cycle):

Sporophyte (2n)
↓
Spore mother cells (2n)
↓ Meiosis
Spores (n)
↓
Gametophyte (n)
↓ Mitosis
Gametes (n)
↓ Fertilisation
Zygote (2n)
↓ Mitosis
Embryo (2n)
↓
Sporophyte (2n)