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
Viruses are __________ smaller than bacteria?
(A) 10 – 100 times
(B) 10 – 1000 times
(C) 100 – 1000 times
(D) 1000 – 10000 times
What percentage of light reaching the earth is used in photosynthesis?
(A) 25%
(B) 10%
(C) 5%
(D) 1%
The one which is present in all aerobic species is _________?
(A) Cytohrome c
(B) Cytochrome a
(C) Cytochrome a3
(D) Cytochrome b