Write the name of the following:

(a) The most common species of bees suitable for apiculture.

(b) An improved breed of chicken.

Why is it desirable to use unleaded petrol in vehicles fitted with catalytic converters?

Where is acrosome present in humans? Write its function.

Comment on the similarity between the wing of a cockroach and the wing of a bird. What do you infer from the above, with reference to evolution?

Mention the role of cyanobacteria as a biofertilizer.