Tissues — Science STD 9 — Question

Who first discovered nucleus in cell in 1831?

Leghorn and Aseel are related to:

Fertilizers cause:

1. Eutrophication of water bodies.
2. Killing of most microorganisms.
3. Destruction of crumb structure of soil.
4. All the above.

Weeds affect the crop plants by:

1. Killing of plants in field before they grow.
2. Dominating the plants to grow.
3. Competing for various resources of crops (plants) causing low availability of nutrients.
4. All the above.

Ascariasis spreads through:

1. Vectors.
2. Contaminated food and water.
3. Formites.
4. Droplets.

Ascaris lumbricoides in common roundworm of:

1. Liver.
2. Bile duct.
3. Large intestine.
4. Small intestine.

Cardiac muscle fibres are:

Algae belong to:

1. Thallphytes.
2. Bryophytes.
3. Pteridophytes.
4. All of the above.

________ is grown in mixed cropping.

The structure that are involved in the manufacture and supply of energy to the cell are: