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BIOLOGY:-
1) The PH range most conductive for life of freshwater plants and animals is
(i) 6.5 - 7.5 (ii) 2.0 - 3.5 (iii) 3.5 - 5.0 (iv) 9.0 - 10.5
2) What would be the advantage of exploiting resources with long term aim?
3) What is the objective of Ganga action plane?
4) Red data book provides the list of
(a) Protected animals (b) Rear animals for milk
(c) entrap animal (d) Both (a) & (b)
5) Write any two ways of energy flow through on ecosystem?
6) Why is pond self sustaining unit while an aquarium may not be? Justify the answer.
7) What will be the impact on ecosystem if bacteria and fungi are removed from the environment?
8) Name any two environment friendly practices?
9) What is being done to avoid ozone depletion?
10) Describe any five modes of disposal of wastes?
11) Ecology is the study of interaction of ______________ with other and their surroundings.
12) De composers are also called as __________________.
13) Water , air, light,and temp. are the examples of _____________ components.
14) Give an example of bisexual flower what is its female reproductive part known as.
15) Pollination may occur without fertilization but fertilization will not take place pollination. Give reason?
16) Define :- (i) Fragmentation (ii) Vegetative Propagation.
17) Advantages and Disadvantages of Vegetative Propagation ?
18) Explain Tissue Culture?
19) Write the differences between Binary fission and Multiple Fission in a tabular form as observed in cells of organism?
20) List any four characteristics of Good fuel?
21) List the sexual transmitted diseases (i) Bacterial infection.
22) Explain the term (i) Speciation (ii) Natural selection.
23) Explain how equal genetic contribution of male and female parents is ensured in the progeny?
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However, I am providing you answer of few of the questions
1) 6.5-7.5 pH
4) Protected animals
8) Recycle and reuse
11) Organism
13) Abiotic component
18) Tissue Culture: In this method, cells of tissues are taken from a plant under sterile conditions. Then, these cells or tissues are kept in test tubes containing culture medium, which allows them to grow faster and develop into a plantlet.
22) Speciation : Speciation may be defined as the evolutionary process by which a new species come into existence
Natural selection : According to Darwin's theory of evolution., natural selection may be defined as the process by which the organisms which are better adaptive to a particular kind of environment tends to survive, leading in the elimination of the organism less adaptive to that environment. These organisms are naturally selected reproduce to pass on their genetic qualities suitable to that environment making their species best suitable to that particular environment.