Question

Type of ovule present in Opuntia is

• A. Amphitropous
• B. Campylotropous
• C. Circinotropous
• D. Orthotropous

Answer 1

The correct option is C Circinotropous

• Amphitropous ovule- The body of ovule gets curved along with the embryo sac in such a way that it becomes horseshoe-shaped. This type of ovule is found in families like Butamaceae, Loganiaceae.

• Campylotropous ovule- This type of ovule is similar to Anatropous ovule but curvature is less than that of anatropous ovule. Campylotropous ovule is found in families like Chenopodiaceae.

• Circinotropous ovule- In this type of ovule, the length of funiculus becomes increased and it covers the whole ovule. It is found in families like Cactaceae (Opuntia).

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

Hence, Opuntia has circinotropous ovule. So, the correct answer is C.