Tissues — Science STD 9 — Question

Where do the ribosomes get synthesized?

It is suggested to wear socks and full sleeves to prevent the attack from dengue. Why?

Why we should not eat uncovered food?

What is cell?

Name two fresh water fishes of India.

1. Puccinia causes ________ disease in wheat.
2. Blast is a _________ disease of paddy.
3. Chemical used to kill weeds are called ________.
4. Pesticides are ________ chemicals.

1. rust, fungal, weedicides, toxic.
2. fungal, rust weedicides, toxic.
3. rust, viral, pesticides, toxic.
4. rust, bacterial, weedicides, toxic.

Name the reptile in which heart is four chambered.