The Fundamental Unit of Life — Science STD 9 — Question

Blubber of whale and hump of camel are:

________ is grown in mixed cropping.

Which of the following in natural insecticides?

Which one of the following is the fastest growing carp?

Contractile vacuoles take part in:

1. Absorption of water from outside.
2. Osmoregulation.
3. Excretion.
4. Both b and c.

Signs of eutrophication of water bodies include:

1. Reduced oxygen demand.
2. Rapid decomposition of organic matter.
3. Algal bloom.
4. Fluorosis.

The infoldings in mitochondria are known as:

In the lung fishes, the heart is:

1. Single chambered.
2. Two chambered.
3. Three chambered.
4. Four chambered.

The nuclei of meristematic cells are:

Poultry farming is under taken to raise following:
(i) Egg production.
(ii) Feather production.
(iii) Chicken meat.
(iv) Milk production.