NCERT Biology Photosynthesis higher plants class-12 notes,mcqs,pdfs

Photosynthesis Higher Plants Mock Exam-3

Question No:1

Photosynthesis occurs in

[A] green leaf
[B] green stem
[C] guard cells
[D] all



Question No:2

Within chloroplast, membranous system is made up of

[A] grana
[B] stroma lamellae
[C] stroma
[D] Both (a) and (b)



Question No:3

Calvin cycle is termed as dark reaction because it

[A] is not dependent on light for CO2 fixation in stroma
[B] occurs in dark
[C] is by convention only
[D] requires light



Question No:4

Where does light reaction occur in chloroplast?

[A] Membrane system (grana)
[B] Stroma
[C] Both
[D] None



Question No:5

Which of the following is correct about light reaction?

[A] light is required
[B] ATP is produce during reaction
[C] NADPH is produced during reaction
[D] all



Question No:6

Find out the incorrect statement from the following:

[A] Dark reaction depends on product formed by light reaction
[B] In stroma, enzymatic reactions incorporates CO2 into the plant leading to synthesis of sugar
[C] Purple and green sulphur bacteria use H2 S as hydrogen donar
[D] There is no division of labour in chloroplast



Question No:7

Match the column:
Pigment —-Colour (in chromatogram)
A. Chl a — i) Bright or blue green
B. Chl b – ii) Yellow
C. Xanthophylls – iii) Yellow-Green
D. Carotenoids — iv) Yellow to yellow-orange

[A] A-i, B-ii, C-iii, D-iv
[B] A-i, B-iii, C-ii, D-iv
[C] A-ii, B-i, C-iii, D-iv
[D] A-iii, B-ii, C-i, D-iv



Question No:8

Chief pigment associated with photosynthesis is

[A] Chl b
[B] Chl a
[C] Xanthophyll
[D] Carotenoid



Question No:9

Which light is maximum absorb by Chl ‘a’?

[A] Yellow and Green
[B] Red and Blue
[C] Yellow and Orange
[D] Yellow and Red



Question No:10

Which light shows higher rate of photosynthesis?

[A] Yellow and Green
[B] Red and Blue
[C] Yellow and Orange
[D] Yellow and Red



Question No:11

Light reaction and photochemical phase include

[A] light absorption
[B] water splitting and release of oxygen
[C] ATP and NADPH formation
[D] all



Question No:12

Which of the following is incorrect about photo system?

[A] There are two photo system (PSI and PSII)
[B] PSI and PSII are named in sequence of their discovery
[C] LHC is made up of hundred of pigment molecules which are bounded proteins
[D] Each photo system has all the pigments (Except one molecule of chlorophyll ‘b’)



Question No:13

Select the correct sequence of electron transfer in Z-scheme of light reaction:

[A] e Acceptor -> ETS (made of cytochrome) -> PSII -> NADP + -> PSI -> e Acceptor
[B] PSII -> e Acceptor -> ETS (made of cytochrome) -> PSI -> e Acceptor H> NADP+
[C] ETS (made of cytochrome) —> PSI -> e Acceptor -> PSII -> e Acceptor —> NADP+
[D] e Acceptor -> PSI -> PSII -> e Acceptor -> ETS (made of cytochrome) -> NADP +



Question No:14

In Z-scheme, Z-shape is formed when

[A] carriers are placed uphill
[B] carriers are placed downhill
[C] carriers are placed in sequence on a redox potential scale
[D] none of the above



Question No:15

Where water splitting complex associated with PSII is situated?

[A] Inner side of chloroplast outer membrane
[B] Inner side of thylakoid membrane
[C] Outer side of thylakoid membrane
[D] Inner side of chloroplast outer membrane