Question

The ovule in which the funicle, chalaza and micropyle lie in one vertical plane, is called

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

Answer 1

The correct option is C orthotropous

Depending upon the shape and orientation, the ovules of angiosperm are classified into the following types

Orthotropous- the micropyle, chalaza and funicle in a straight line. This is the most primitive type of ovule. Found in the beetle, piper, Polygonum.

Hemianatropous-ovule turn at 90-degree angle upon the funicle, the body of ovule is at a right angle to the funicle.

Anatropous-the body of the ovule is completely inverted ovum is at a 180-degree angle to the micropyle and hilum come to lie very close to each other.

Campylotropous-ovum circle more or less at a right angle to the funicle. The micropylar end is bent down slightly.

So, the correct option is 'orthotropous'.