Biology MCQs

Page No. 41

Stomata cover only ______________ of leaf surface?


a0.03 – 0.04%


b10%


c1-2 %


d50%


View Answer 1-2 %

Molecular formula of chlorophyll ‘a’ molecule is___________?


aC55H72O5N4Mg


bC55H70O6N4Mg


cC50H72O6N4Mg


dC55H70O5N4Mg


View Answer C55H72O5N4Mg

Photosynthesis carried out by terrestrial plants is _________ of total photosynthesis?


a1-2%


b5%


c10%


d20%


View Answer 10%

Which of the following statement about the head of a chlorophyll molecule is incorrect?


aIt is a porphyrin ring or tetrapyrrole ring structure


bIt is flat, square and light absorbing


cComposed of carbon and nitrogen atoms with Magnesium as central metal ion, which is coordinated with nitrogen.


dIt is hydrophobic


View Answer It is hydrophobic

Of the following, which one causes higher production of food in green plants?


aBlue


bOrange


cRed


dViolet


View Answer Red

Chlorophyll is insoluble in_____________?


aCarbon tetrachloride


bAlcohol


cOrganic solvents


dWater


View Answer Water

First Actions spectrum was obtained by using__________?


aAlgae


bFungi


cBacteria


dSpirogyra


View Answer Spirogyra

Which of the light is mainly absorbed by the plants?


aOrange


bRed


cGreen


dBoth A and B


View Answer Both A and B

The first action spectrum was obtained by___________?


aT.W.Englemam


bMalleus


cT.W.Inws


dW.Stapes


View Answer T.W.Englemam

Which of the following light is least absorbed by the plants?


aOrange


bRed


cBlue


dGreen


View Answer Green

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