Water vascular system is found in

In a pressure cooker, the food is cooked faster because

Clouds float in atmosphere because of their low

Nerve cell does not contains

Smooth muscles occur in

Which of the following is a complex tissue?

Companion cells are closely associated with

The tissue composed of living thin walled polyhedral cell is

Elements in the modern periodic table are arranged in__________ groups and __________ periods.

Modern periodic law states that the physical and chemical properties of elements are the periodic functions of their__________

If Dobereiner is related with 'law of triads', then Newlands is related with __________.

Excretory organ of tape worm is

Poikilothermic organisms are

The animal without skull is

Transpiration takes place through _____________.

Chlorophyll in a leaf is required for __________.

The non-directional movement of a plant part in response to temperature is called ________.

The root of the plant is __________.
i) positively phototropic but negatively geotropic
ii) positively geotropic but negatively phototropic
iii) negatively phototropic but positively hydrotropic
iv)negatively hydrotropic but positively phototropic

The bending of root of a plant in response to water is called _________ 

Identify the animal having four chambered heart

Which one of the following pairs is not a poikilothermic animal?

The correct electronic configuration of potassium is

The term nucleons refer to

Change in the number of neutrons in an atom changes it to

Among the following the odd pair is

______ is essential to perform separation by solvent extraction method.

The centrifugal force is

The area under velocity – time graph represents the

The tropic movement that helps the climbing vines to find a suitable support is ________. 

__________ has the same properties throughout the sample

When we mix a drop of ink in water we get a__________

Among the following______is a mixture

1 metric ton is equal to

Rulers, measuring tapes and metre scales are used to measure

Choose the correct one