WorksheetsPhotosynthesis
Total questions: 20
Worksheet time: 15mins
Mark out the incorrect statement.
PS II is found in both grana and stroma lamellae
PS II is involved in photolysis of water
PS I participates in both cyclic as well as non-cyclic flow of electrons.
The reaction centre in PS II is P680
An external source of electrons is not required in
Cyclic photophosphorylation
Non-cyclic photophosphorylation
Z-scheme of flow of electrons
All of these
Action spectrum of photosynthetic pigments was studied by Englemann on _______ in the presence of _______ bacteria.
Spirogyra, Anaerobic
Cladophora, aerobic
Chlorella, Aerobic
Scenedesmus, Anaerobic
Select incorrect statement.
Each photosystem has all the pigments except one molecule of chlorophyll a
Action spectra is greater in blue and red light.
Chlorophyll a and b are chief pigments associated with photosynthesis
PS II is involved in evolution of O2.
Primary electron acceptor in cyclic photophosphorylation is
(a) (b) (c) (d)
Phaeophytin
Fe-S
PC
Cyt-b6-f complex
Minimum photosynthesis takes place in
Green light
Red light
Blue light
White light
The above diagram represents the 3 stages of Calvin cycle.
Identify A, B, C :
A - Carboxylation; B - Reduction; C - Regeneration
A - Regeneration; B - Reduction; C - Carboxylation
A - Reduction; B - Carboxylation; C - Regeneration
A - Carboxylation; B - Regeneration; C - Reduction
In Hatch and Slack pathway, the primary CO2 acceptor is
Rubisco
Oxaloacetic acid
Phosphoglyceric acid
Phosphoenol pyruvate
The entire reactions of C4 pathway takes place in
Mesophyll and bundle sheath
Vascular bundle and palisade tissue
Mitochondria and peroxisome
Bundle sheath and endoplasmic reticulum
Ferrodoxin (Fd) is a
Non-heme iron protein
Heme iron protein
Copper containing protein
None of the above
Why are C4 plants able to photosynthesize with no apparent photorespiration?
They do not participate in the Calvin cycle.
They use PEP carboxylase to initially fix CO2.
They are adapted to cold, wet climates.
They conserve water more efficiently.
Which metal ion is constituent of chlorophyll?
Iron
Copper
Magnesium
Zinc
Splitting of water is associated with
Photosystem I
Lumen of thylakoid
Both photosystem I and Ii
Inner surface of thylakoid membrane
In _________, enzymatic reactions incorporate CO2 into the plant leading to the synthesis of sugar, which in turn forms starch.
Matrix of mitochondria
Stroma of chloroplast
Intermembrane space of mitochondria
Grana of chloroplast
A chromatographic separation of the leaf pigments shows that the colour that we see in leaves is not due to a single pigment but due to
Chlorophyll a
Chlorophyll b
Xanthophylls and carotenoids
All the above
Assertion : Chloroplasts occur inside the leaves mostly in mesophyll cells along their walls.
Reason :The membrane system of chloroplast is responsible for trapping the light energy and also for the synthesis of ATP and NADPH.
Both Assertion and Reason are true and the Reason is the correct explanation of the Assertion
Both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion
Assertion is true but Reason is false
Both Assertion and Reason are false
Assertion: The colour of the leaf is due to the presence of four pigments-chlorophyll a, chlorophyll b, xanthophylls and carotenoids.
Reason: Chlorophyll b is the chief pigment associated with photosynthesis.
Both Assertion and Reason are true and the Reason is the correct explanation of the Assertion
Both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion
Assertion is true but Reason is false
Both Assertion and Reason are false
Assertion : Dark reactions are called biosynthetic phase of photosynthesis.
Reason :Dark reactions do not directly depend on the presence of light but are dependent on the products of the light reaction, i.e. ATP and NADPH.
Both Assertion and Reason are true and the Reason is the correct explanation of the Assertion
Both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion
Assertion is true but Reason is false
Both Assertion and Reason are false
