Biodiversity and Conservation — BIOLOGY STD 12 Science — Question

Assertion : Agrobacterium tumefaciens is popular in genetic engineering because this bacterium is associated with the roots of all cereal and pulse crops.

Reason : A gene incorporated in the bacterial chromosomal genome-gets automatically transferred to the crop with which the bacterium is associated.

The main reason for the success of Mendel was that:

In most of the mammals the testes are situated outside the abdominal cavity because

The brain capacity of Homo habilis ___________.

Which one of the following pair is correctly matched

Match the following list of bioactive substances and their roles:

	Bioactive Substance		Role
i.	Statin	a.	Removal of oil stains
ii.	Cyclosporin A	b.	Removal of clots from blood vessels
iii.	Streptokinase	c.	Lowering of blood cholesterol
iv.	Lipase	d.	Immuno-suppressive agent

Choose the correct match:

If the frequency of dominant allele is 60%, find out the percentage of heterozygous individuals in the population.

Cry-genes have been introduced in:

An example of biodiversity conservation in situ.