Question

An ovule that becomes curved so that the nucellus and embryo sac lies at right angles to the funicle is-

• A. campylotropous
• B. hemitropous
• C. orthotropous
• D. anatropous

Answer 1

The correct option is B

hemitropous

The correct option is B

Explanation of correct option

1. The presence of the ovule at the right angle to the funicle is called a hemitropous ovule.
2. Example- Ranunculus.

Explanation of incorrect option

Option A

1. The campylotropous ovule appears bent where the micropyle and chalaza are not aligned and the embryo sac has a slight curve.
2. Example- Pea plant.

Option C

1. The orthotropous ovule has the funicle, chalaza, and micropyle lined up.
2. Example- all gymnosperms.

Option D

1. The anatropous ovule has its ovules inverted on its stalk.
2. Example- Tridax, Helianthus.

Final answer

An ovule that becomes curved so that the nucellus and embryo sac lies at right angles to the funicle is hemitropous.