Match the plant with the kind of life cycle it exhibits. Choose the correct answer from the options given below: List - I (a) Spirogyra (b) Fern (c) Funaria (d) Cycas List - II (i) Dominant diploid sporophyte vascular plant, with highly reduced male or female gametophyte (ii) Dominant haploid free-living gametophyte (iii) Dominant diploid sporophyte alternating with reduced gametophyte called prothallus (iv) Dominant haploid leafy gametophyte alternating with partially dependent multicellular sporophyte
Answer: (B) (a)-(ii); (b)-(iii); (c)-(iv); (d)-(i). Answer: (B) (a)-(ii); (b)-(iii); (c)-(iv); (d)-(i).
- A.(a)-(iv); (b)-(i); (c)-(ii); (d)-(iii)
- B.(a)-(ii); (b)-(iii); (c)-(iv); (d)-(i)✓
- C.(a)-(iii); (b)-(iv); (c)-(i); (d)-(ii)
- D.(a)-(ii); (b)-(iv); (c)-(i); (d)-(iii)
Correct Answer
(B) (a)-(ii); (b)-(iii); (c)-(iv); (d)-(i)
Solution & Explanation
Answer: (B) (a)-(ii); (b)-(iii); (c)-(iv); (d)-(i). Solution: Spirogyra (alga) is haplontic — its life cycle has a dominant haploid free-living gametophyte (ii). Fern (pteridophyte) has a dominant diploid sporophyte alternating with a reduced gametophyte, the prothallus (iii). Funaria (moss/bryophyte) has a dominant haploid leafy gametophyte with a partially dependent multicellular sporophyte (iv). Cycas (gymnosperm) has a dominant diploid sporophyte with a highly reduced gametophyte (i). This unique one-to-one pairing rules out all other option sets. NCERT Reference: Class XI Biology, Plant Kingdom (Plant Life Cycles & Alternation of Generations — content rationalised from current reprint, grounded in pre-2023 NCERT text).