Q. Introduction of some alien species causes biodiversity loss. Justify the statement with an example.

Q. Define polymerase chain reaction.

Q. Define Mortality.

Q. Distinguish between homogametes and heterogametes.

Q. What is test cross? Mention its significance.

Q. List the period, brain capacity and probable food of Homo erectus stage of human evolution.

Q. What is global warming?

Q. Plant cells are totipotent. Why?

Q. Mention the different steps of process of recombinant DNA technology.

Q. Draw a neat labelled diagram of stirred tank bioreactor.

Q. a) Draw an ideal pyramid of energy and mention the units.
b) What is an ecological succession?

Q. Briefly explain any three prevention and control measures of drug\alcohol abuse.

Q. a) Discuss the MOET technique of animal breeding.
b) Differentiate between inbreeding and outbreeding.

Q. a) What is Medical Termination of Pregnancy? Mention the safe period for Medical Termination of Pregnancy.
b) Write three simple principles to prevent sexually transmitted diseases.

Q. Mention the causes and effects phenylketonuria.

Q. Draw a neat labelled diagram of human sperm.

Q. Mention the steps involved in DNA fingerprinting.

Q. a) Distinguish between primary productivity and secondary productivity of an ecosystem.
b) Define food web.

Q. What is an allergy?

Q. a) What are hermophrodites? Mention one example.
b) Offsprings of asexual reproduction are called clones. Why?

Q. Differentiate between active immunity and passive immunity.

Q. Name the causative agent of Elephantiasis.

Q. Mention the bacterium responsible for the large holes seen in 'Swiss Cheese'.

Q. What is gene pool?

Q. What are sacred groves? Mention any two examples.

Q. Describe the outbreeding devices that prevent the autogamy.

Q. Name the cells that secrete androgens.

Q. What are homologous organs? Mention any two examples.

Q. List the salient features of human genome project.