Plant - Growth and Development PYQ — Page 2

Name the plant growth regulator which upon spraying on sugarcane crop, increases the length of stem, thus increasing the yield of sugarcane crop.

Which of the following is not an inhibitory substance governing seed dormancy?

It takes a very long time for pineapple plants to produce flowers. Which combination of hormones can be applied to artificially induce flowering in pineapple plants throughout the year to increase yield?

In order to increase the yield of sugarcane crop, which of the following plant growth regulators should be sprayed?

Removal of shoot tips is very useful technique to boost the production of tea leaves. This is because

Fruit and leaf drop at early stages can be prevented by the application of

You are given tissue with its potential for differentiation in artificial culture. Which of the following pairs of hormones would you add to the medium to secure shoots as well as roots?

The Avena curvature is used for bioassay of:

Typical growth curve in plants is:

Auxin can be bio assayed by:

Which one of the following growth regulators is known as stress hormone?

A few normal seedlings of tomato were kept in a dark room. After a few days, they were found to have become white-colored like albinos, Which of the following terms will you use to describe them?

Dr F. Went noted that if coleoptile tips were removed and placed on agar for one hour, the agar would produce a bending when placed on one side of freshly- cut coleoptile stumps. Of what significance is this experiment?

The pineapple which under natural condition is difficult to blossom has been made to produce fruits throughout the year by application of:

Tissue culture technique can produce infinite number or new plants from a small parental tissue. The economic importance of the technique is in raising:

During seed germination its stored food is mobilised by

Through their effect on plant growth regulators, what do the temperature and light control in the plants?

Which one of the following generally acts as an antagonist to gibberellins?

Root development is promoted by

One of the commonly used plant growth hormone in tea plantations is

One of the synthetic auxin is :

One of the synthetic auxin is

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

Somaclones are obtained by