In a chloroplast the highest number of protons are found in
1. lumen of thylakoids
2. inter membrane space
3. antenna complex
4. Stroma
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIn photosynthesis, the light-independent reactions take place at
1. thylakoid lumen
2. photosystem l
3. photosystem ll
4. stromal matrix
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAnoxygenic photosynthesis is characteristic of
(1) Rhodospirillum
(2) Spirogyra
(3) Chlamydomonas
(4) Ulva
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe correct sequence of cell organelles during photorespiration is
(1) chloroplast-Golgi bodies-mitochondria
(2) chloroplast-rough endoplasmic reticulum-dictyosomes
(3) chloroplast-peroxisome-mitochondria
(4) chloroplast-vacuole-peroxisome
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyPGA as the frist CO2 fixation was discovered in photosynthesis of
(1) bryophyte
(2) gymnosperm
(3) angiosperm
(4) algae
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyC4 -plants are more efficient in photosynthesis than C3 -plants due to
1. higher leaf area
2. presence of larger number of chloroplasts in the leaf cells.
3. presence of thin cuticle
4. lower rate of photorespiration
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyTHe C4 -plants are photosynthetically more efficient than C3 -plants because
(1) the CO2 compensation point is more
(2) CO2 generated during photorespiration is trapped and recycled through PEP carboxylase
(3) the CO2 efflux is not prevented
(4) they have more chloroplasts.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyElectrons from excited chlorophyll molecule of photosystem-II are accepted first by
1. cytochrome-b
2. cytochrome-f
3. quinone
4. ferredoxin
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIn the leaves of C4 -plants malic acid synthesis during CO2 fixation occurs in
(1) epidermal cells
(2) mesophyll cells
(3) bundle sheath
(4) guard cells
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe wavelength of light abosorbed by Pr form of phytochrome is :
(1) 640 nm
(2) 680 nm
(3) 720 nm
(4) 620 nm
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology