CBSE Class 12 Biology Solved Question Paper 2011 | Previous Year Papers | Zigya

Subject

Biology

Class

CBSE Class 12

Pre Boards

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Sample Papers

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 Multiple Choice QuestionsShort Answer Type

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1.

Name the type of cell division that takes place in the zygote of an organism exhibiting haplontic life cycle.

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2. Write the scientific name of the microbe used for fermenting malted cereals and fruit juices.
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3. Write the unit used for measuring ozone thickness.
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4. Name the event during cell division cycle that results in the gain or loss of chromosome.
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5.

How can bacterial DNA be released from the bacterial cell for biotechnology experiments?

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6. Write the importance of cryopreservation in conservation of biodiversity.
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7. Mention the role of the codons AUG and UGA during protein synthesis.
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8. Normally one embryo develops in one seed but when an orange seed is squeezed many embryos of different shapes and sizes are seen. Mention how it has happened.
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9.

How do histones acquire positive charge?

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10. Why is CuT considered a good contraceptive device to space children?
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