Natural Resources — Science STD 9 — Question

The jelly like substance present in the cell is called as:

The birds which are reared for eggs are called _______:

Root hairs of plants absorb water from soil through:

Causes of water pollution are:

1. Inorganic.
2. Organic.
3. Biological.
4. All of these.

Seat of photosynthesis is:

As the size of the cell increases:

Each cell of unicelluler organism performs certain functions such as _________.

Which of the following classes has largest number of animals?

1. Mammals.
2. Pisces.
3. Insect.
4. Reptilian.

Preventive and control measures adopted for storage of grains include.

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