Biology Mcqs

All of the following are involved in nitrification except

A. Nitrobacter
B. Nitrosomonas
C. Rhizohium
D. All of these

Which of the following organisms have Chitin as a major structural component of their cell wall________________?

A. Prokaryotae
B. Protoctista
C. Plantae
D. Fungi

What is the characteristic feature of consumers?

A. Autotroph
B. Heterotroph
C. Parasite
D. Saprophyte

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