SSLC (English Medium) कक्षा १० - Tamil Nadu Board of Secondary Education Question Bank Solutions

A group of plants produced from a single plant through vegetative or asexual reproduction are called a pureline.

Iron fortified rice variety determines the protein quality of the cultivated plant

Golden rice is a hybrid.

In vitro fertilisation means the fertilisation done inside the body.

Assertion: Hybrid is superior than either of its parentsReason: Hybrid vigour is lost upon inbreeding.

Assertion: Colchicine reduces the chromosome number.

Reason: It promotes the movement of sister chromatids to the opposite poles.

Give the name of wheat variety having higher dietary fibre and protein.

Semi-dwarf varieties were introduced in rice. This was made possible by the presence of dwarfing gene in rice. Name this dwarfing gene.

State the importance of biofertiliser.

Name three improved characteristics of wheat that helped India to achieve high productivity

Describe mutation breeding with an example.

Biofortification may help in removing hidden hunger. How?

With a neat labelled diagram explain the techniques involved in gene cloning.

Higher Order Thinking Skill (HOT)

Polyploids are characterised by gigantism. Justify your answer.

Higher Order Thinking Skill (HOT)

‘P’ is a gene required for the synthesis of vitamin A. It is integrated with genome of ‘Q’ to produce genetically modified plant ‘R’.

1. What is P, Q and R?
2. State the importance of ‘R’ in India.

Excessive consumption of alcohol leads to ______.

Where does alcohol effect immediately after drinking?

Cirrhosis is associated with brain disorder.

Cirrhosis is caused in liver due to excessive use of ______.

Suggest measures to overcome the problems of an alcoholic.