Biodiversity and Conservation — BIOLOGY STD 12 Science — Question

An antibiotic resistance gene in a vector usually helps in the selection of:

The first mammals arose

The region of ‘Biosphere Reserve’ which is legally protected and where no human activity is allowed is known as :

The country which formed the first world earth commities for protection of the environment.

Extrusion of second polar body from egg nucleus occurs 

Assertion : Plasmodium vivax is responsible for malaria.

Reason : Malaria is caused by polluted water.

The amino acid substituted in sickle cell anaemia is

In India, we find mangoes with different flavours, colours, fibre content, sugar content and even shelf life. The large variation is in account of:

The largest part of the fallopian tube is

Reason of fast speciation in present day crop plants is.