Question

The body of ovule lies straight in continuation of funicle, with funicle chalazal and micropyle in straight line. The type of ovule is?

• A. Anatropous
• B. Orthotropus
• C. Hemitropous
• D. Amphitropous

Answer 1

The correct option is B Orthotropus

•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 micropyle comes near to the funiculus. Chalaza and micropyle lie in the straight line but hilum is at 90° to the micropyle.

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

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

•Amphitropous ovule- Here, the body of ovule gets curved along with the embryo sac and it becomes horseshoe-shaped.

So, the correct answer is B.