91.

A common test to find the genotype of a hybrid is by

• crossing of one F₂ progeny with male parent

• crossing of one F₂ progeny with female parent

• studying the sexual behaviour of F₁ progenies

• studying the sexual behaviour of F₁ progenies

If you suspect major deficiency of antibodies in a person, to which of the following would you look for confirmatory evidence?

• Serum albumins

• Serum globulins

• Fibrinogen in the plasma

• Fibrinogen in the plasma

The finches of Galapagos islands provide an evidence in favour of

• special creation

• evolution due to mutation

• retrogressive evolution

• retrogressive evolution

Male gametes in angiosperms are formed by the division of

• microspore

• generative cell

• vegetative cell

• vegetative cell

Which one of the following is surrounded by a callose wall?

• Microspore mother cell

• Male gamete

• Egg

• Egg

Which one of the following is not a bioindicator of water pollution?

• Sludge-worms

• Blood-worms

• Stone files

• Stone files

Which one of the following pairs of organisms are exotic species introduced in India?

• ficus religiosa , lantana camara

• lantana camara, water hyacinth

• water hyacinth, prosopis cinereria

• water hyacinth, prosopis cinereria

Which one of the following statement is correct?

• Stem cells are specialize cells

• There is no evidence of the existence of gills during embryogensis of mammals

• All plant and animal cells are totipotent

• All plant and animal cells are totipotent

The living organisms can be unexceptionally distinguished from the non-living things on the basis of their ability for

• responsiveness to touch

• interaction with the environment and progressive evolution

• reproduction

• reproduction

What is common to whale, seal and shark?

• Seasonal migration

• Thick subcutaneous fat

• Convergent evolution

• Convergent evolution