Question

Which of these plants is correctly matched with its reproductive characteristics?
(i) Sphagnum: Male sex organs called antheridium produce biflagellate antherozoids while the female sex organ called archegonium produces a single egg.
(ii) Sequoia: One of the megaspores enclosed within the megasporangium develops into a multicellular female gametophyte that bears two or more archegonia or female sex organs
(iii) Wolffia: One of the male gametes fuses with the egg cell to form a zygote while the other male gamete fuses with the diploid secondary nucleus to produce the triploid primary endosperm nucleus.
(iv) Polysiphonia: Sexual reproduction is oogamous with non-motile gametes and accompanied by complex post-fertilization developments

• A. i and ii
• B. i, iii and iv
• C. ii, iii and iv
• D. i, ii, iii and iv

Answer 1

Answer: (D)

Sphagnum is a bryophyte. In bryophytes, a male sex organ called antheridium produces biflagellate antherozoids while the female sex organ called archegonium produces a single egg.
Sequoia is a gymnosperm. In gymnosperms, one of the megaspores enclosed within the megasporangium develops into a multicellular female gametophyte that bears two or more archegonia or female sex organs
Wolffia is an angiosperm. Angiosperms show double fertilization in which one of the male gametes fuses with the egg cell to form a zygote while the other male gamete fuses with the diploid secondary nucleus to produce the triploid primary endosperm nucleus.
Polysiphonia is a red alga belong to Rhodophyceae. In rhodophytes, sexual reproduction is oogamous with non-motile gametes and accompanied by complex post-fertilization developments.