Human Reproduction — BIOLOGY STD 12 Science — Question

Draw a neat diagram of the female reproductive system and label the parts associated with the following.

1. Production of gamete.
2. Site of fertilisation.
3. Site of implantation.
4. Birth canal.

Bioreactors are the inclusion carriers in any biotechnology based production process. The ultimate success of any biotechnological technique depends on the efficiency of the bioreactor due to large scale production and economy.
In the context of the above passage, answer the following questions :
(i) For optimization of a bioreactor system, list possible operating instructions (rules). Make a list of any four.
(ii) "Optimal growth and metabolic activities of cells." Mention the stages of growth mentioned in.
(iii) Is the bioproduct formed in the bioreactor completely ready for immediate use as desired? Write the appropriate reasons also to support your answer.

In which categories have been classified the contraceptive methods. Describe any three methods in detail.

Explain the difference between prokaryotic and eukaryotic DNA.

Answer the following questions:
Seeds offer several advantages to angiosperms. Describe any three such advantages.

Use this key for Questions A-D Key:

1. thymus gland.
2. spleen.
3. lymph node.
4. red bone marrow.

1. Causes differentiation of T-cells.
2. Purifies lymph.
3. Contains red pulp and white pulp.
4. Formation of granular and a granular leukocytes.

Describe the human male reproductive system.

Collect 5 examples of palindromic DNA sequences by consulting your teacher. Better try to create a palindromic sequence by following the base-pair rules.

A person in your colony has recently been diagnosed with AIDS. People/residents in the colony want him to leave the colony for the fear a spread of AIDS.

1. Write your view on the situation, giving reasons.
2. List the possible preventive measures that you would suggest to the residents of your locality in a meeting organised by you so that they understand the situation.
3. Write the symptoms and the causative agent of AIDS.