261. During the process of photosynthesis the raw materials used are

A Glucose
B Chlorophyll
C Starch
D CO2 and H2O
Answer :   CO2 and H2O
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262. During ionisation of H2O H+ is captures by

A Chlorophyll
B NADP
C O2
D Cytochrom
Answer :   NADP
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263. In light reaction, plastoquinone facilitates the transfer of electrons from

A Cytb6f complex to PS-I
B PS-I to NADP+
C PS-I to ATP synthase
D PS-II to Cytb6f complex
Answer :   PS-II to Cytb6f complex
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264. Nine-tenth of the world photosynthesis is carried out by

A Shurbs
B Herbs
C Trees
D Algae
Answer :   Algae
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265. The isotope of carbon used extensibely for studies in photosynthesis

A C13
B C14
C C15
D C16
Answer :   C14
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266. Which pigment is water soluble

A Chlorophyll
B Carotene
C Anthocynanin
D Xanthophyll
Answer :   Anthocynanin
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267. In plants, hill reaction occurs

A All the time
B Only in day time
C Only when the plants are grown in cold climate of hills
D When the plant carries out up hill task of salt absorption and food translocation
Answer :   Only in day time
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268. Optimum temperature of photosynthesis is

A 10 - 15°C
B 20 - 25°C
C 20 - 35°C
D 35 - 50°C
Answer :   20 - 35°C
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269. Which one of the following is wrong in relation to photorespiration

A It occurs in chloroplasts
B It occurs in daytime only
C It is a characteristic of C4 plants
D It is a characteristic of C3 plants
Answer :   It is a characteristic of C4 plants
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270. Process of photophosphorylation was first given by

A Hill
B Willstatter & Stoll
C Arnon
D Prk & Biggins
Answer :   Arnon
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