Tissues — Science STD 9 — Question

An insect which transmits a disease is known as:

1. Intermediate host.
2. Parasite.
3. Vector.
4. Prey.

The structure that are involved in the manufacture and supply of energy to the cell are:

Who has proposed two kingdom classification?

1. R.Whittaker.
2. Carolus Linnaeus.
3. Schimper.
4. Eichler.

Cylindrical muscle fibres which show alternate light and dark bands are:

Father of histology is:

1. Malpighi
2. Bichat
3. Mayer
4. None of them

Preventive and control measures adopted for storage of grains include.

1. Strict cleaning.
2. Proper disjoining.
3. Fumigation.
4. All the above.

Name the gas which plays major role in global warming:

1. Carbon monoxide.
2. Nitrous oxide.
3. Carbon dioxide.
4. Sulphur dioxide.

The fibres of commercial importance are obtained from:

Mixed cropping ______:

Which scientist was the first to observe red blood cells in humans and other animals?