Biodiversity and Conservation — BIOLOGY STD 12 Science — Question

A childless couple has agreed for a test tube baby programme. List only basic stepsof the procedure that would involve to conceive a baby.

Draw the chemical structure of molecule of morphine and cannabinoids.

When and where was the Earth Summit held? What was its objective?

Give an example for convergent evolution and identify the features towards which they are converging.

Name and explain the mechanism by which seeds from hybrid plants are developed that are able to retain the desired hybrid character in the progeny.

Define spermicides. Also, mention their use and mode of contraceptive action.

Biopiracy should be prevented. State why and how?###Explain biopiracy in brief.

What harm do cancerous cells cause?

Name the biological products made in transgenic animal to treat emphysema. Explain.

List the events that reduce the Biological Oxygen Demand (BOD) of a primary effluent during sewage treatment.