Photosynthesis In Higher Plants - Live Session - NEET 2020Contact Number: 9667591930 / 8527521718Photosynthesis In Higher Plants - Live Session - NEET 2020Contact Number: 9667591930 / 8527521718Who among the following stated that sunlight is essential to restore the pure air that has been made impure by animal respiration and burning of candle?
1. Joseph Priestley
2. J.V. Sachs
3. Jan Ingenhousz
4. Engelmann
First action spectrum of photosynthesis given by T.W. Engelmann was based on
1. Use of monochromatic light wavelength
2. Rate of evolution when unicellular green algae Cladophora was illuminated
3. Accumulation of anaerobic bacteria around alga
4. More than one options are correct
R. Hill when illuminated isolated chloroplasts, in presence of a suitable H-acceptor and water did not detect the presence of sugar because
1. The medium was without
2. Isolated chloroplasts do not perceive light
3. Suitable H-acceptor taken was DCPIP
4. Assimilatory power ATP could not be generated in the light reaction
Chlorophyll ‘a’ differs from chlorophyll ‘b’ in
1. Presence of a tetrapyrrole ring in porphyrin head
2. Absence of – CHO at 3rd outer carbon of 2nd pyrrole
3. Being synthesized from precursor protochlorophyllide
4. Absorbs light in both blue and red wavelengths of the visible spectrum
Choose incorrect statements for quantasome.
1. Group of pigments required for carrying out photochemical reaction
2. The term was coined by Park and Biggins
3. These are the functional unit of chloroplast
4. It contains 330 pigment molecules i.e., 280 chlorophyll molecules and 50 carotenoid molecules
During photosynthesis of higher plants the oxygen evolves from water, was proved by
1. Van Niel’s experiment using purple and green sulfur bacteria
2. Ruben and Kamen using and Chlorella
3. Exposing Chlorella alternately to light and dark periods
4. Exposing sugarcane to
Which of the following is not related to PS I?
1. NADP reduction
2. Involved in cyclic and non-cyclic photophosphorylation
3. Found in both grana and stroma lamellae4.
4. Associated with the release of
Primary e– acceptor in non-cyclic photophosphorylation is
1. Mn-Protein towards the inner side of the thylakoid membrane
2. Phaeophyta, a special chlorophyll ‘a’ molecule without Mg
3. Plastoquinone (PQ)
4. Fe-S protein
Select incorrect with respect to cyclic photophosphorylation.
1. Operate at a low light intensity
2. Predominantly found in photosynthetic bacterial.
3. Synthesizes only ATP
4. The external electron donor is required
Role of carotenoids pigments in photosynthesis is all of the following except
1. Shield pigments
2. Antenna molecules
3. LHC
4. Reaction centre
ATP synthesis in the chloroplast is driven due to
1. Accumulation of within the lumen due to splitting of water
2. Continuous pumping from stroma to thylakoid lumen while transporting electrons finally to NADP+
3. Development of gradient on both sides of the thylakoid membrane
4. All are correct
Light-driven ATP synthesis through complex
occurs
1. When the gradient is broken down and it brings a conformational change in a particle of ATPase
2. When passes through piece by facilitated diffusion.
3. pH of the lumen is increased than the stroma side of the thylakoid membranes.
4. More than one options are correct
The most crucial phase of reduction into sugar in the dark phase is
1. Carboxylation
2. Reduction
3. Regeneration of RUBP
4. Glycolytic reversal
For fixation of 12 molecules of into sugar by rice plant, the assimilatory power ATP and NADPH required respectively is
1. 36, 24
2. 18, 12
3. 3, 2
4. 60, 24
Choose incorrect option with respect to photorespiration.
1. It leads to approximately 20-25% loss of the fixed sugar
2. It is the process to protect the plant from photo-oxidation
3. is used in chloroplasts as well as in peroxisome
4. It is favored by high light intensity, high temperature and high concentration
In photorespiration, the formation of glycine, the release of ammonia and oxygenation of RUBP occur respectively in
1. Peroxisome, mitochondria, chloroplast
2. Chloroplast, peroxisome, mitochondria
3. Chloroplast, mitochondria, peroxisome
4. Peroxisome, peroxisome, mitochondria
In plants showing cycle, photorespiration does not occur because
1. These plants have a concentrating phase at the site of an enzyme
2. First stable product is 4 C compound OAA
3. Mesophyll cells have agranal chloroplasts
4. Primary fixation occurs in mesophyll chloroplasts
What is incorrect for the CAM cycle or plants?
1. All CAM plants are succulent and drought resistant
2. fixation is separated by time
3. All CAM plants have scotoactive stomata
4. Water loss does not occur at all when the stomata are open at night
Find the odd one out with respect to double carboxylation.
1. Pineapple
2. Maize
3. Bryophyllum
4. Wheat
The optimum concentration for tomato and bell pepper is
1. Beyond 450
2. 360
3. 0-10
4. 25-50
Photosynthetic productivity decreases more in plants as compared to plants when the plants are subjected to low temperatures. This is because
1. plants have agranal chloroplast in bundle sheath cells
2. Regeneration of primary acceptor decreases as the enzyme pyruvate phosphate dikinase is sensitive to low temperature
3. Activity of RuBisCO is inhibited
4. Slow transportation of malic acid to bundle sheath cells
Which of these does not affect the rate of photosynthesis?
1. Light quality
2. Duration of light
3. Photosynthetic product accumulation
4. Age of leaf
Read the following statements.
a. Cladophora is used to demonstrate the absorption spectrum by TW. Eryplrnann
b. Cornelius Von Niel demonstrated that is a must for photosynthesis
c. The chloroplast is placed perpendicular to the incident light to shield against photodestruction d. Antenna complex shows the chemical reaction
e. Thylakoid reactions show fixation by RuBisCO
How many of the above statements are incorrect?
1. Two
2. Four
3. Five
4. Three
In plants " Oxygenase" activity of RuBisCO is observed in
1. Two different organelles
2. An organelle other than the one where the photorespiratory loss occurs
3. Sunlight at a high ratio
4. Peroxisome mainly