Class 12th Biology 2016 Set2 Delhi Board Paper Solution
Question 15
What is a GMO ? List any five possible advantages of GMO to a farmer.
Answer
Those plants, bacteria, fungi or animals whose genes have been altered by manipulation are called Genetically Modified Organisms (GMOs).
Advantages :
Popular Questions of Class 12th biology
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(b) Adaptations of plants to water scarcity
(c) Behavioural adaptations in animals
(d) Importance of light to plants
(e) Effect of temperature or water scarcity and the adaptations of animals. - Q:- With a neat diagram explain the 7-celled, 8-nucleate nature of the female gametophyte.
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- Q:- Explain the Law of Dominance using a monohybrid cross.
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(a) 100%
(b) 50 %
(c) 1-5%
(d) 2-10% - Q:-
What is meant by monosporic development of female gametophyte?
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- Q:- Fill in the blanks.
(a) Plants are called as_________ because they fix carbon dioxide.
(b) In an ecosystem dominated by trees, the pyramid (of numbers) is _________ type.
(c) In aquatic ecosystems, the limiting factor for the productivity is _________.
(d) Common detritivores in our ecosystem are_________.
(e) The major reservoir of carbon on earth is_________. - Q:- Offspring formed due to sexual reproduction have better chances of survival. Why? Is this statement always true?
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