Diversity In Living Organisms — Science STD 9 — Question

In organic farming diseases are controlled by _______ and ________ methods.

Animals in which phylum have numerous pores in their body.

Name the common air pollutant which causes depletion of ozone layer.

1. Wheat.
2. Rice.
3. Maize.
4. Sorghum.

In which class would you place any organism which has:

1. A scaly exoskeleton and a bony endoskeleton.
2. A scaly exoskeleton and lay eggs outside water?

Give two examples of bryophytes.

Give the technical terin for bee keeping.

Name one high yielding breed of cow and one of buffalo respectively.

What is correct?

Regular use of OSR cures diarrhoea.