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Define Diapause....

Define Diapause.

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Diapause is a stage of suspended development in zooplanktons species under unfavourable conditions.
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XII BOARD PREVIOUS YEAR PAPER ENGLISH-XII BOARDS-Set-I
  1. Define Diapause.

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  2. A genticist intersted in studing variations and patterns of inheritanc...

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  3. Name the transcriptionally active region of chromatin in a nucleus.

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  4. State a reason for the increased population of dark coloured moths coi...

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  5. Indiscrimate diagnostic practices using X- rays etc, should be avoided...

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  6. What is biopiracy?

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  7. After a brief medical examination a healthy couple came to know that b...

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  8. Differentiate between male and female heterogamety.

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  9. How has mutation breeding helped in improving the production of mung b...

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  10. Mention a product of human welfare obtained with the help of each one...

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  11. Many fresh water. animals can not survive in a marine environment. Exp...

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  12. How are productivity, gross productivity, net primary productivity, an...

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  13. Double fertilization is reported in plants of both, castor and groundn...

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  14. Describe the process of Parturition in humans.

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  15. A teacher wants his/her students to find the genotype of pea plants be...

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  16. (a) A DNA segment has a total of 1000 nucleotides, out of which 240 of...

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  17. Explain polygenic inheritance with the help of a suitable example.

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  18. Enlist the steps involved in the inbreeding of cattle. Suggest two dis...

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  19. A team of students are preparing to participate in the inter school sp...

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  20. Choose any three microbes, from the following which are suited for org...

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  21. Recombinant DNA-techology is of great important in the field of medici...

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