Improvement in Food Resources — Science STD 9 — Question

Epithelial tissue always has an exposed outer surface and an inner surface anchored to connective tissue by a thin, non-cellular structure called the:

1. Nonstratified layer.
2. Stratified membrane.
3. Basement membrane.
4. Fibroblast.

Which of the following effect cannot be produced by an unbalanced force acting on a body?

1. Change in speed of the body.
2. Change in shape of the body.
3. Change in direction of motion of the body.
4. Change in state of rest of the body.

When a car runs on a circular track with a uniform speed, its velocity is said to be changing. This is because:

Photochemical smog is formed by:

1. NO₂
2. SO₂
3. CO₂
4. CO

A cell placed in hypotonic solution bursts up. It is:

1. Animal cell.
2. Bacterial cell.
3. Fungal cell.
4. Plant cell.

The shorter duration crops help the farmer :

If we release a magnet held in our hand, it falls to the ground. The force which makes the magnet fall down is an example of:

1. Balanced force.
2. Unbalanced force.
3. Magnetic force.
4. Muscular force.

An organism having some characteristics of plant and animal kingdom is:

The subatomic particle called electron was discovered by:

Where do we generally mount the material on the slide?