Question

Exine of the pollen grain is made up of

• A. Pectocellulose
• B. Ligno cellulose
• C. Sporopollenin
• D. Pollen kit

Answer 1

The correct option is C

Sporopollenin

The correct option is C.

The explanation for the correct option:

1. Exine refers to the outer covering of the pollen.
2. It is a protective covering.
3. It protects male gametes from physical and chemical damage.
4. It is made up of the protein Sporopollenin.
5. This protein is resistant to various enzymatic activities and protects pollen from degradation.
   

The explanation for the incorrect options:

Option A:

1. Pectocellulose is formed due to the Fusion of pectin and cellulose fibers.
2. It is located in the intine of the pollen grain.

Option B:

1. Ligno cellulose refers to lignified fibrous tissues.
2. This tissue plays an important role in Biodiesel or biofuel formation.

Option D:

1. Pollen kit refers to the oily and sticky layer present around the exine of pollen grains.
2. This pollen kit helps in entomophilous pollination.

Final answer:

Exine of the pollen grain is made up of Sporopollenin.