Biology Mcqs

So far over _____________ number of species of animals are known?

A. million
B. 1 million
C. 1
D. 2 million

The greatest diversity of animals in the lake is found in which one of the following zones?

A. Limmnetic zone
B. Littoral zone
C. Profundal zone
D. None of these

The word which E-Chatton suggested for bacteria and blue green algae was_____________?

A. Autotrophs
B. Heterotrophs
C. Pro-cariotique
D. Eu-cariotique

Scurvy and beri – beri and caused by the deficiency of___________?

A. Vitamin B and C
B. Vitamin B and D
C. Vitamin C and B
D. Vitamin A and B

The structure which has been formed or modified from gill pouches in humans is___________?

A. Gills
B. Eustachian tube
C. Middle ear
D. Lungs

Solanum tuberosum is a scientific name of___________?

A. Onion
B. Amaltas
C. Potato
D. Tomato

Those organisms which can prepare their own food from simple inorganic material and can store energy are called___________?

A. Autotrophs
B. Heterotrophs
C. Procariotique
D. Eu-cariotique

The first eukarotes appeared about __________ years ago?

A. 1.5 billion
B. 2.5 billion
C. 3.5 billion
D. 4.5 billion

Which of the following category is most general with its members lest resembling with each other than the other categries_____________?

A. Species
B. Genus
C. Family
D. Order

According to Lamarch evolution occurred as the result of__________?

A. Natural selection
B. The theory of recapitulation
C. Inheritance of acquired characters
D. Over production