The Fundamental Unit of Life — Science STD 9 — Question

If two solution have the same osmolarity, they are said to be:

Centrosome occurs in:

1. Plant cell.
2. Animal cell.
3. Animal cells and some lower plant cells.
4. All the above.

The botanical name of Dhaincha is:

1. Phaseolus vulgaris.
2. Lens culinaris.
3. Trifolium alexandrium.
4. Sesbania aculeate.

Root hairs of plants absorb water from soil through:

1. Diffusion.
2. Imbibition.
3. Osmosis.
4. All the above.

Girth of stem increases due to:

Which of the following is micronutrient?

1. Nitrogen
2. Phosphorus
3. Potassium
4. Boron

Fluid contained inside the nucleus is called _______________________?

Goitre is caused due to deficiency of disease?

1. Fluorine.
2. Vitamin C.
3. Vitamin A.
4. Iodine.

Silver nitrate solution is used to study:

Omnis cellulae cellualae i.e., new cells arise from pre-existing cells; this statement was given by ______.