The Fundamental Unit of Life — Science STD 9 — Question

New cells arise from pre-existing cell is the statement given by:

Define cell.

In the given figure, which of the following parts transmits impulse away from the cell body?

Vacuole in a plant cell

Fluid contained inside the nucleus is called _______________________?

Biosphere occurs:

1. In lithosphere.
2. In lithosphere and hydrosphere.
3. At place of interaction of lithosphere, hydrosphere and atmosphere.
4. In atmosphere and hydrosphere.

Air is a mixture of:

1. Nitrogen, oxygen, methane, carbon dioxide.
2. Nitrogen, oxygen, carbondioxide, water vapours.
3. Nitrogen, carbon dioxide, oxygen, carbon monoxide.
4. Nitrogen, oxygen, carbon monoxide, water vapours.

Haversian canals are present in:

1. Cartilage.
2. Ligament.
3. Bone.
4. Tendon.

In a plant cell, structure, support, and protection of the cell are provided by the:

Guard cells are present in:

1. Cork.
2. Cortex.
3. Stomata.
4. Vascular bundle.