Give an example of unisexual flowers.

Give one example each of a unisexual and a bisexual flower.

Give example of monera.

Give an example of contact force.

Give an example of commensal relationship.

Give an example of scalar product.

Give an example of a sulpha drug.

Explain the process of artifical hybridisation to get improved crop variety in (i) plants bearing bisexual flowers (ii) female parent producing unisexual flowers.