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CBSE CLASS XII
>
Biology
List of top Biology Questions asked in CBSE CLASS XII
Is sex education necessary in schools? Why?
CBSE CLASS XII
Biology
Reproductive Health
Mention any two autosomal genetic disorders with their symptoms.
CBSE CLASS XII
Biology
Principles of Inheritance and Variation
Distinguish between
(a) Grazing food chain and detritus food chain
(b) Production and decomposition
(c) Upright and inverted pyramid
(d) Food chain and Food web
(e) Litter and detritus
(f) Primary and secondary productivity
CBSE CLASS XII
Biology
Eco-System
What are transgenic bacteria? Illustrate using any one example.
CBSE CLASS XII
Biology
Applications of Biotechnology
All algae have
CBSE CLASS XII
Biology
Algae
Give three hypotheses for explaining why tropics show greatest levels of species richness.
CBSE CLASS XII
Biology
Biodiversity and Conservation
Crystals of Bt toxin produced by some bacteria do not kill the bacteria themselves because -
CBSE CLASS XII
Biology
Applications of Biotechnology
Draw a well-labelled diagram of an antibody molecule.
CBSE CLASS XII
Biology
human health and disease
What do you think is the significance of reproductive health in a society?
CBSE CLASS XII
Biology
Reproductive Health
What is spermatogenesis? Briefly describe the process of spermatogenesis.
CBSE CLASS XII
Biology
Human Reproduction
Mention two strategies evolved to prevent self-pollination in flowers.
CBSE CLASS XII
Biology
sexual reproduction in flowering plants
Does our blood have proteases and nucleases?
CBSE CLASS XII
Biology
Applications of Biotechnology
If one can induce parthenocarpy through the application of growth substances which fruits would you select to induce parthenocarpy and why?
CBSE CLASS XII
Biology
sexual reproduction in flowering plants
Find out from internet what is golden rice.
CBSE CLASS XII
Biology
Applications of Biotechnology
Describe briefly the followings:
Origin of replication
Bioreactors
Downstream processing
CBSE CLASS XII
Biology
biotechnology
Discuss with your teacher and find out how to distinguish between
Plasmid DNA and chromosomal DNA
RNA and DNA
Exonuclease and Endonuclease
CBSE CLASS XII
Biology
biotechnology
Why do you think the zygote is dormant for sometime in a fertilized ovule?
CBSE CLASS XII
Biology
sexual reproduction in flowering plants
Consult internet and find out how to make orally active protein pharmaceutical. What is the major problem to be encountered?
CBSE CLASS XII
Biology
Applications of Biotechnology
Can you suggest a method to remove oil (hydrocarbon) from seeds based on your understanding of rDNA technology and chemistry of oil?
CBSE CLASS XII
Biology
Applications of Biotechnology
What are Cry proteins? Name an organism that produces it. How has man exploited this protein to his benefit?
CBSE CLASS XII
Biology
Applications of Biotechnology
What is gene therapy? Illustrate using the example of adenosine deaminase (ADA) deficiency.
CBSE CLASS XII
Biology
Applications of Biotechnology
Compare and contrast the advantages and disadvantages of production of genetically modified crops.
CBSE CLASS XII
Biology
Applications of Biotechnology
Suggest the aspects of reproductive health which need to be given special attention in the present scenario.
CBSE CLASS XII
Biology
Reproductive Health
Can you think and answer how a reporter enzyme can be used to monitor transformation of host cells by foreign DNA in addition to a selectable marker?
CBSE CLASS XII
Biology
biotechnology
Can you recall meiosis and indicate at what stage a recombinant DNA is made?
CBSE CLASS XII
Biology
biotechnology
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