Tissues — Science STD 9 — Question

Name the long part of neuron.

Which of the following classes has largest number of animals?

1. Mammals.
2. Pisces.
3. Insect.
4. Reptilian.

‘Taxa’ differs from “taxon” due to:

1. This being a higher taxonomic category than taxon.
2. This being the lower taxonomic category than taxon.
3. This being the singular of taxon.
4. This being the singular of taxon.

Find out the correct sentence about manure.

1. Manure contains large quantities of organic matter and small quantities of nutrients.
2. It increases the water holding capacity of sandy soil.
3. It helps in draining out of excess of water from clayey soil.
4. Its excessive use pollutes environment because it is made of animal excretory waste.

1. (i) and (iii)
2. (i) and (iii)
3. (ii) and (iii)
4. (iii) and (iv)

The most abundant compound in cytoplasm is:

Poultry fowl are susceptible to the following pathogens.

1. Viruses
2. Bacteria
3. Fungi
4. All the above

Who first discovered nucleus in cell in 1831?

Xylem is made of:

Leghorn and Aseel are related to:

Growing different crops in the same field in a pre-planned succession, to improve the quality and quantity of the crop yield and maintain the fertility of soil is known as: