Match List-I with List-II.
| List-I | List-II |
|---|---|
| A. Funicle | I. Mass of cells with abundant reserve food materials |
| B. Hilum | II. Protective envelopes that encircle the nucellus |
| C. Integuments | III. Stalk that attaches the ovule to the placenta |
| D. Nucellus | IV. Junction between the ovule and the funicle |
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → A-III, B-IV, C-II, D-I
The ovule is attached to the placenta by a stalk. It is covered by one or two protective envelopes, and inside them lies a mass of food-rich cells that holds the embryo sac.
(A) Funicle — this matches (III) Stalk that attaches the ovule to the placenta.
(B) Hilum — this matches (IV) Junction between the ovule and the funicle. It is the region where the body of the ovule fuses with the funicle.
(C) Integuments — this matches (II) Protective envelopes that encircle the nucellus. They leave a small opening, the micropyle, at the tip.
(D) Nucellus — this matches (I) Mass of cells with abundant reserve food materials. The embryo sac is located in the nucellus.
So the correct match is A-III, B-IV, C-II, D-I.
NCERT Extract:
The Pistil, Megasporangium (Ovule) and Embryo Sac – “… The ovule is a small structure attached to the placenta by means of a stalk called funicle. The body of the ovule fuses with funicle in the region called hilum. Thus, hilum represents the junction between ovule and funicle. Each ovule has one or two protective envelopes called integuments. Integuments encircle the nucellus except at the tip where a small opening called the micropyle is organised. Opposite the micropylar end, is the chalaza, representing the basal part of the ovule. Enclosed within the integuments is a mass of cells called the nucellus. Cells of the nucellus have abundant reserve food materials.”
Figure 1.7 (d) A diagrammatic view of a typical anatropous ovule