Reproductive Health — BIOLOGY STD 12 Science — Question

Mark the odd one in the following group.
Zygote, Endosperm, Embryo, Persperm.

Fearing that the child to be born may have a genetic disorder, a couple goes to a doctor. Which one of the following techniques is likely to be suggested by the doctor to cure the genetic disorder?

1. Hybridoma technology
2. Gene therapy
3. RDNA technology
4. Embryo transfer

Name the type of evolution that has resulted in the development of structures like wings of butterfly and bird. What are such structures called?

Name one disease which is caused due to point mutation.

Identify the period which is called age of reptiles.

Name the plant source of cocaine. How does it affect the human body?

Two statements are given-one labelled Assertion and the other labelled Reason. Select the correct answer to these questions from the codes (a), (b), (c) and (d) as given below.

1. Both assertion and reason are true and reason is the correct explanation of assertion.
2. Both assertion and reason are true but reason is not the correct explanation of assertion.
3. Assertion is true but reason is false.
4. Both assertion and reason are false.

Assertion: Biopatents are awarded for biological entities and all products derived from them.
Reason: Patent on use of turmeric in wound healing was cancelled in 2008.

In Drosophila, 2n = 8; how many linkage groups are present in it?

Name the National Park in India where migratory birds arrive in winter from Siberia.

Mention the pollinating agent of an inflorescence of small dull-coloured flowers with well exposed stamens and large feathery stigmas. Give any one characteristic of pollen grains produced by such flowers.