Improvement in Food Resources — Science STD 9 — Question

Plasmolysis occurs due to:

1. Absorption.
2. Endosmosis.
3. Osmosis.
4. Exosmosis.

Which part of the cell contains genetic information?

Find out the wrong statement.

Large schools of fishes in open sea are located with the help of:

Fluid part of blood after removal of corpuscles is ______________.

1. Plasma
2. Lymph
3. Serum
4. Vaccine

A cell places in hypotonic solution will:

1. Shrink.
2. Show plasmolysis.
3. Swell up.
4. No change in shape or size.

Reproductive structure are flowers in:

1. Gymnosperms.
2. Pteridophytes.
3. Angiosperms.
4. Both (a) and (b).

In India agriculture irrigation is done by:

Arthropods are characterised by:

1. Jointed legs.
2. Jointed appendages.
3. Chitinous exoskeleton.
4. All the above.

Signs of eutrophication of water bodies include:

1. Reduced oxygen demand.
2. Rapid decomposition of organic matter.
3. Algal bloom.
4. Fluorosis.