Jaya and Ratna developed for green revolution in India are the varieties of

When CO₂ concentration in blood increases, breathing becomes

When huge amount of sewage is dumped into a river, the BOD will

Which one of the following pairs of animals comprises ‘Jawless fishes’?

A healthy person eats the following diet ⟶

5 gm raw sugar
4 gm albumin
5 gm lignin
10 gm pure buffalo ghee adultrated with 2 gm vegetable ghee (hydrogenated vegetable oil)

How many calories he is likely to get?

One of the most important functions of Botanical gardens is that

The living organisms can be unexceptionally distinguished from the non-living things on the basis of their ability for

Which one of the following animals may occupy more than one trophic levels in the same ecosystem at the same time?

The symbiotic association of fungi and algae is called

Which element is essential for the stability of chromosome structure?

Which one of the following is correctly matched ?

Which one of the following cellular parts is correctly described?

Which combination of tissues acts together to provide support to the hypocotyl of seedling?

Taxonomic hierarchy refers to

Which one of the following acids is a derivative of carotenoids?

What is the function of the filiform apparatus present at the entrance of ovule?

Which of the following statements about the process of DNA replication is false?

The eye of octopus and eye of cat show different patterns of structure, yet they perform similar function. This is an example of

In meiosis

Interactions in which the consumer lives within the body of the host and slowly damages the host are referred to as

Which of the following regarding water transport is true ?

Which of the following groups of plants have Underground stems?

Assertion ⟶ Muscle contraction force increases with rise in strength of stimulus.

Reason ⟶ This is due to increased contraction of individual muscle fibres with increase in stimulus strength.

Assertion ⟶ Urinary bladder and ureters are lined by transitional epithelium.

Reason ⟶ Ureters carry the urine to urinary bladder where it is stored temporarily.