Tissues — Science STD 9 — Question

Appropriate .......... can prevent the occurrence of infectious diseases and reduce the loss of poultry during an outbreak of diseases:

The cell organelle found in prokaryotes as well as eukaryotes is

The selection of crops in mixed cropping is in such a way that they support each others growth:

Living organisms vary widely in size. However, even the largest organisms such as the giant redwood and the blue whale have cells that are roughly the same size as those in smaller organisms. Why are all cells small?

_________ is necessary for the maximum and judicious use of water:

Which of the following biomolecules forms the integral part of the cell wall?

Natural system of classification employs:

1. Compleify of cell structure.
2. Complexity of body structure.
3. Organisation.
4. All the above.

Which of the following is the largest phylum?

1. Arthropoda.
2. Ametida.
3. Mollusca.
4. Cnidaria.

Nervous tissue is not found in:

Major source of formation of soil is:

1. Rocks.
2. Snow covered mountains.
3. Rivers beds.
4. Volcanoes.