Match List-I with List-II:
| List-I | List-II |
|---|---|
| Structures | Functions |
| (A) Filiform apparatus | (I) Made up of sporopollenin |
| (B) Tapetum | (II) Attachment of ovule to the placenta |
| (C) Exine | (III) Guides pollen tube into the synergid |
| (D) Funicle | (IV) Nourishes the pollen grain |
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → (A)-(III), (B) - (IV), (C) - (I), (D)-(II)
(A) Filiform apparatus — this matches (III) Guides pollen tube into the synergid. The filiform apparatus is a set of cellular thickenings at the micropylar tip of the synergids. It guides the entry of the pollen tube into the synergid.
(B) Tapetum — this matches (IV) Nourishes the pollen grain. The tapetum is the innermost wall layer of the microsporangium. Its cells have dense cytoplasm and often more than one nucleus, and they nourish the developing pollen grains.
(C) Exine — this matches (I) Made up of sporopollenin. The exine is the hard outer layer of the pollen wall. Its sporopollenin is one of the most resistant organic materials known, so pollen keeps well as fossils.
(D) Funicle — this matches (II) Attachment of ovule to the placenta. The funicle is the stalk of the ovule, which joins it to the placenta.