Question

Characters related to ovule in Helianthus. \[ \begin{aligned} \text{I. Inverted} \\ \text{II. Curvature angle is }180^\circ \\ \text{III. Unitegmic} \\ \text{IV. Micropyle lies close to funicle} \end{aligned} \]

• A. I and II only
• B. II and III only
• C. I, II, III and IV
• D. I, III and IV only

Hint:

Most angiosperms possess anatropous ovules in which the micropyle lies close to the funicle.

Answer 1

The Correct Option is C

Concept: Helianthus (Sunflower) possesses an anatropous ovule. An anatropous ovule is the most common ovule type among angiosperms.

Step 1: Check Statement I.
Anatropous ovule is inverted. Hence Statement I is correct.

Step 2: Check Statement II.
The ovule bends completely. \[ \text{Curvature angle} = 180^\circ \] Hence Statement II is correct.

Step 3: Check Statement III.
Sunflower ovule is unitegmic. Hence Statement III is correct.

Step 4: Check Statement IV.
Micropyle comes close to funicle. This is a defining feature of anatropous ovules. Hence Statement IV is correct. Therefore: \[ \boxed{\text{I, II, III and IV}} \] are correct. Hence option (C).