Question

Ovule is inverted with body fused to funicle, micropyle lying close to hilum and facing the placenta. It is?

• A. Hemitropous
• B. Orthotropous
• C. Anatropous
• D. Campylotropous

Answer 1

The correct option is C Anatropous

•Hemianatropous ovule- The body of ovule is turned through 90° and micropyle and chalaza lie in a straight line but funiculus is at right angle or 90° with both these two.

•Orthotropous ovule is the simplest and primitive type of ovule. In this type of ovule, micropyle, chalaza and funiculus lie in one vertical plane.

•Anatropous ovule is the most common type of ovules, which occurs in more than 80% of angiospermic families. The body of ovule is rotated by 180° and micropylar comes near to the funiculus. Chalaza and micropyle lie in the straight line but hilum is at 90° to micropyle. The body of ovule is fused to funiculus on one side, thus forming a ridge called Raphe.

•Campylotropous ovule- This type of ovule is very similar to the Anatropous ovule but the curvature is less than the Anatropous ovule.

Hence, the properties given in the question match those of Anatropous ovule.

So, the correct answer is C.