Suresh thought of straight export of orchids as these flowers fetch high price in international market due to their beauty and longer vase life. He consulted his Botanist uncle who suggested him a fast method of propagation of orchids to earn good profits.
Read the above passage and answer the following questions:
(i) What is plant tissue culture ?
(ii) What is micropropagation ?
(iii) What value is displayed by Suresh's uncle ?

Hari was a grower. He used to grow tomatoes on his fertile land and got very good yields. Science the vegetable market was far from his village and also he had no transport facility, most of his harvest was rotten due to delay. He consulted his friend in a agriculture university for solution to this problem who suggested him to grow transgenic tomatoes with delayed ripening genes.
Read the above passage and answer the following questions:
(i) What are transgenics?
(ii) How are transgenic tomato produced?
What value was displayed by Hari's friend?

Rahul introduced Ronit to his uncle and told him that Ronit is pursuing course in biotechnology in America.
His uncle had never of this term earlier and was curious to know about this term. Ronit pointed towards a big tree at the base of which were present numerous tumour-like structures and said that this is the example of natural biotechnology.
(i) What is biotechnology?
(ii) How these crown gall tumours are formed?
(iii) What are the value shown by Rahul's uncle?

The biology teacher was explaining about restriction enzymes and came to a point explaining that these enzymes are extracted from bacteria and are called as molecular scissors. Varun, a student got curious and asked some questions for more clarity on the concept to his teacher.
(i) From which part of microorganisms are restriction enzymes derived?
(ii) Why are restriction enzymes called molecular scissors?
(iii) What if some strands are needed to be cut from within. would that lead to wastage of DNA?
(iv) What value are shown by varun?

No evidence was found on a crime scene, other than only a few hair strands. The inspector wants to proceed for DNA fingerprinting but the amount of DNA is very less.
(i) In your opinion what could be the solution to this problem?
(ii) Write the basic steps of this technique.
(iii) Name the scientist who developed this technique.
(iv) What values show by the inspector?