Improvement in Food Resources — Science STD 9 — Question

Name the organisms which has:

1. Setae and parapodia.
2. Tube feet.

What is acute disease?

In which group pf plants is the sporophyte parasitic over gametophyte?

Name one common disease of paddy.

Name two diseases against which vaccines are available.

How many cows can be impregnated from a semen of single bull?

Name two fresh water sources which provide fresh water for human use.

A coverslip must always be places very gently while mounting in order to:

1. Avoid the entry of air bubbles.
2. Stop the stain from oozing out.
3. Avoid crushing of the material.
4. Stop the material from drying.

Name deficient nutrient for night blindness.