Question

Characters of sunflower ovule. I. Micropyle lie close to funicle
II. Inverted ovule
III. Ovule curvature is 180°
IV. Curved embryo sac

• A. \( I, II \, \text{and} \, IV \)
• B. \( I, II \, \text{and} \, III \)
• C. \( I, II \, \text{and} \, III \)
• D. \( I, II \, \text{and} \, IV \)

Hint:

Remember that the sunflower ovule is inverted and has a curvature of 180°. Also, the position of the micropyle is close to the funicle. These are key identifying features of the sunflower ovule.

Answer 1

The Correct Option is C

We are asked to identify the correct combination of the characteristics of the sunflower ovule.
The correct combination is:
1. Micropyle lies close to the funicle: This is true for sunflower ovules. The micropyle is the opening that allows the pollen tube to enter the ovule during fertilization.
2. Inverted ovule: This is also true. The sunflower ovule is inverted, meaning it is turned upside down with respect to its base.
3. Ovule curvature is 180°: This is true, as the sunflower ovule undergoes a complete 180° curvature, which is typical for its species.
4. Curved embryo sac: This is incorrect for sunflower ovules. The embryo sac of sunflower is not curved but rather has a linear structure.
Thus, the correct combination is option (3), where statements I, II, and III are correct.