Question Details

Match List-I with List-II:


Structures and Functions Table

List-I (Structures) List-II (Functions)
(A) Filiform apparatus
(B) Tapetum
(C) Exine
(D) Funicle
(I) Made up of sporopollenin
(II) Attachment of ovule to the placenta
(III) Guides pollen tube into the synergid
(IV) Nourishes the pollen grain
Choose the correct answer from the options given below:

Options

A

(A)- (III), (B)- (I), (C)- (IV), (D)- (II)

B

(A)- (III), (B)- (IV), (C)- (I), (D)- (II)

C

(A)- (II), (B)- (I), (C)- (III), (D)- (IV)

D

(A)- (IV), (B)- (III), (C)- (I), (D)- (II)

Show Answer

Correct Answer :

Option B

(A)- (III), (B)- (IV), (C)- (I), (D)- (II)

Solution :

The correct option is (A)- (III), (B)- (IV), (C)- (I), (D)- (II).

Let us understand the biological structures and their functions step-by-step to see why this match is correct:

(A) Filiform apparatus - (III) Guides pollen tube into the synergid
The filiform apparatus consists of finger-like projections of the cell wall present at the micropylar tip of the synergids in the embryo sac. Its main function is to secrete chemical attractants that guide the pollen tube entering the synergid during fertilization.

(B) Tapetum - (IV) Nourishes the pollen grain
The tapetum is the innermost layer of the microsporangium (anther wall). Its cells contain dense cytoplasm and are often multinucleate. The tapetum plays a crucial role in providing nourishment to the developing pollen grains (microspores).

(C) Exine - (I) Made up of sporopollenin
The outer layer of the pollen grain wall is called the exine. It is composed of a highly resistant organic material called sporopollenin, which protects the pollen grain from high temperatures, strong acids, and enzymatic degradation.

(D) Funicle - (II) Attachment of ovule to the placenta
The funicle is the stalk-like structure that attaches the ovule to the placenta within the ovary of a flower.

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