Improvement in Food Resources — Science STD 9 — Question

Ribosomes are made up of:

1. Lipoprotein.
2. RNA.
3. Protein.
4. Both (a) and (c).

What will happen if we put a plant and animal cell in the isotonic solution:

Collenchyma mainly forms __________.

1. Hypodermis
2. Epidermis
3. Phloem
4. Inner cortex

The nuclear material without nuclear membrane is observed in:

Alikunhi is famous for development of the technique of:

Find out the wrong statement from the following:

1. White revolution is meant for increase in milk production.
2. Blue revolution is meant for increase in fish production.
3. Increasing food production without compromising with environment quality is.
4. None of the above.

Which one of the following is the smallest in size?

Animal husbandry is the scientific management of:

1. Animal breeding.
2. Culture of animals.
3. Animal livestock.
4. Rearing of animals.

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

Mitochondria are the seat of:

1. Anaerobic respiration.
2. Trapping of sunlight.
3. Krebs cycle.
4. Calvin cycle.

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?