| How does endosperm of angiosperms become triploid? |
| OR |
| What is emasculation? Explain its importance in hybridisation. |
| (i) For producing a recombinant protein (for therapeutic purpose) in large scale, which vector would you choose-a low copy number or hight copy number? |
| (ii) Would you like to choose an exonuclease enzyme while producing a recombinant DNA molecule? |
| (i) What is seminal plasma? What are its components? |
| (ii) Where do sperms mature and become motile? |
| (i) Name the substance used as a medium/matrix in gel electrophoresis. |
| (ii) Why does DNA move towards the anode in gel electrophoresis? |
| (iii) Name the compound used for staining the isolated DNA in the gel electrophoresis. |
| (i) What is cloning vector? |
| (ii) Explain any two methods of vectorless gene transfer. |
| (i) Give the scientific name of the soil bacterium which produces crystal (Cry) proteins. |
| (ii) How are these proteins useful in agriculture? |
(iii) What do the differently written terms 'Cry' and ' ' represent respectively? |
| What is eutrophication? Explain its consequence on the life of plants and animals in such water bodies. |
| OR |
| What is biological magnification? How does DDT as a water pollutant undergo biological magnification? |
| (i) What values did Kavita's husband show in the above situation? |
| (ii) What governs sex determination in humans? |
| (iii) Why can't Kavita be blamed for not giving birth to a male child? |
| Draw a labelled diagram of the sectional view of a mature pollen grain in angiosperms. Explain the functions of its different parts. |
| OR |
| (i) What is the role of cervix of the human female system in reproduction? |
| (ii) Distinguish between spermatogenesis and oogenesis. |
| In garden pea (Pisum sativum) a plant with red flowers was crossed with a plant with white flowers. Work out the possible genotypes and phenotypes of \[{{F}_{1}}\] and \[{{F}_{2}}\] generations. State any one of Mendel's law that could be derived from this cross. |
| OR |
| Mention any two autosomal genetic disorders with their symptoms. |
| (i) How normal cells get transformed into cancerous neoplastic cells? Mention the difference between viral oncogenes and cellular oncogens. |
| (ii) Write a short note on detection of cancer. |
| OR |
 |
| (i) The diagram given above is that of a typical biogas plant. Identify A, B and C. Explain the sequence of events occurring in it. |
| (ii) Name the institutes which helped in the development of biological fuel technology in India. |
You need to login to perform this action.
You will be redirected in
3 sec
