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Biology RJ B...
Biology | RJ Board | Grade 12 | 2014
Q.
Describe pollen-pistil interaction in detail.
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Q.
What is bioreactor? Explain its functioning.
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Q.
Explain the use of Agrobacterium tumifaciens in gene cloning.
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Q.
Differentiate between In-situ conservation and Ex-situ conservation.
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Q.
What is genetic equilibrium? Write any four factors affecting Hardy-Weinberg equilibrium.
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Q.
Explain any two reasons of biodiversity loss.
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Q.
What is the name of the sequence of base pairs which reads same on the two strands of DNA when orientation of reading is kept same?
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Q.
Give one use of biotechnology in the field of medicine.
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Q.
Explain in brief the processes of Dairy farm management.
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Q.
If the sequence of one strand of DNA is as follows
5
′
-AAGTTACTAGAC-
3
′
then write the sequence of m-RNA formed on this basis.
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Q.
Explain the difference between predation and parasitism.
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Q.
What is Human Genome project? Write the salient features of Human genome project. Draw a representative diagram of Human genome project.
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Q.
Write the name of the theory of inheritance given by Walter Sutton.
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Q.
Write one harmful effect of deforestation on environment.
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Q.
If the doctor forgets to tie vas deferens of right side during vasectomy, then what will be the effect on sterilisation?
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Q.
Give the names of four reproductive events that occur after puberty in human beings.
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Q.
Write the full form of BOD.
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Q.
Write the name of bacteria which converts milk to curd.
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Q.
What is genetic code? Write its four salient features. Draw a diagram of t-RNA.
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Q.
Explain with examples the uses of microbes in production of fermented beverages.
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Q.
Pomato plant is formed by the protoplast fusion of which two plants?
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Q.
What are mutagens?
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Q.
Differentiate between Dryopithecus and Ramapithecus primates.
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Q.
Write the scientific name of the bacteria that produces Bt toxin.
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Q.
Explain four basic processes due to fluctuation in density of a population in a given habitat.
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Q.
Why are catalytic converters used in automobiles?
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Q.
If diabetic pateints are given unprocessed pro-insulin, then what will be its effect?
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Q.
Why are the chances of survival of young ones of viviparous animals greater than oviparous animals?
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Q.
What is the ploidy of endosperm in angiosperms?
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