The atoms of different elements combine with each other through ionic or covalent bonding to produce compounds this stable form is called_____.

1. 1. A molecule
   2. An organ
   3. Tissue
   4. Both a and c

Stamens are not usually pendulous in plants pollinated by _____.

1. 1. Wind
   2. Water
   3. Rain
   4. Insects

The drfinite shape to ciliates is given by_____.

1. 1. Penicle
   2. Pellicle
   3. Calcium
   4. Cell wall

The nephridia of earthworm open into the coelom by_____.

1. 1. Nephridiopore
   2. Flame cell
   3. Nephrostome
   4. Anus

Gibberellins may be substituted for _____light, therefore promote flowering in long day plants?

1. 1. Red
   2. White
   3. Blue
   4. Green

Which of the following statement about Homeostasis is incorrect?

1. 1. There is a definite control system that regulates the homeostatic activities
   2. Because of this the fluctuations of internal environment are of extremely narrow range as compared to that of external environment
   3. Homeostatic mechanisms keep the internal environment fixed despite of wide changes in external environment
   4. Noe of these

Which of the followings are effectors_____.

1. 1. Muscles
   2. Glands
   3. Both ‘a’ & ‘b’
   4. Sensory organs

Insertion of Biceps is on_____.

1. 1. Ulna
   2. Olecronon process of ulna.
   3. Scapula
   4. Radius

The food of hydra consists of_____.

1. 1. Small crustaceans
   2. Humus
   3. Detritus
   4. Dead microscopic animals

Members of one species inhabiting the same are form_____.

1. 1. Species
   2. Population
   3. Community
   4. Ecosystem