NEET Biology Photosynthesis In Higher Plants MCQs Set 02

Question. In C₄ plants, mesophyll cells and bundle sheath cells are specialised to perform respectively
(a) Light reaction and dark reaction
(b) Light reaction and photorespiration
(c) Dark reaction and light reaction
(d) Photorespiration and dark reaction

Answer: A

Question. Agranal chloroplasts are found in
(a) Bundle sheath of sugarcane leaves
(b) Bundle sheath of mango leaves
(c) Mesophyll of pea leaves
(d) Mesophyll of maize leaves

Answer: A

Question. Find odd one (w.r.t. double carboxylation)
(a) Pisum sativum
(b) Sorghum
(c) Zea mays
(d) Sugarcane

Answer: A

Question. Photosynthesis of maize plant differ from wheat plant in
(a) All of these
(b) Having spatial separation in both carboxylations
(c) Number of ATP required per CO₂ fixation
(d) Having PEPcase activity

Answer: A

Question. In C₄ plants, the bundle sheath cells
(a) Have a high density of chloroplasts
(b) Have large intercellular spaces
(c) Have thin walls to facilitate gaseous exchange
(d) Are rich in PEP carboxylase

Answer: A

Question. C₄ plants are less efficient at low temperature due to
(a) Cold sensitivity of PEP synthetase enzyme
(b) High energy requirement for CO₂ fixation
(c) Low O₂ affinity of PEPcase
(d) Reduced rate of decarboxylation of organic acids

Answer: A

Question. C₄ plants can tolerate saline conditions due to
(a) Occurrence of organic acids
(b) Presence of PEP synthetase enzyme
(c) Absence of photorespiration
(d) Presence of PEP carboxylase enzyme

Answer: A

Question. Which group of plants are not benefitted by CO₂ fertilisation effect?
(a) Plants with Kranz anatomy
(b) Plants having single carboxylation
(c) Plants requiring 3 ATP per CO₂ fixation
(d) Plants having high rate of photorespiration

Answer: A

Question. The oxygen evolved during photosynthesis comes from water molecules. Which one of the following pairs of elements is involved in this reaction?
(a) Manganese and Chlorine
(b) Magnesium and Molybdenum
(c) Magnesium and Chlorine
(d) Manganese and Potassium

Answer: A

Question. Anoxygenic photosynthesis is characteristic of
(a) Rhodospirillum
(b) Spirogyra
(c) Chlamydomonas
(d) Ulva

Answer: A

Question. The correct sequence of cell organelles during photorespiration is
(a) Chloroplast, – mitochondria, – peroxisome
(b) Chloroplast, – vacuole, – peroxisome
(c) Chloroplast, – Golgibodies, – mitochondria
(d) Chloroplast, – Rough endoplasmic reticulum, – Dictyosomes

Answer: A

Question. In Kranz anatomy, the bundle sheath cells have
(a) Thick walls, no intercellular spaces and large number of chloroplasts
(b) Thin walls, many intercellular spaces and no chloroplasts
(c) Thick walls, many intercellular spaces and few chloroplasts
(d) Thin walls, no intercellular spaces and several chloroplasts

Answer: A

Question. CAM helps the plants in
(a) Conserving water
(b) Secondary growth
(c) Disease resistance
(d) Reproduction

Answer: A

Question. PGA as the first CO₂ fixation product was discovered in photosynthesis of
(a) Alga
(b) Bryophyte
(c) Gymnosperm
(d) Angiosperm

Answer: A

Question. Kranz anatomy is one of the characteristics of the leaves of
(a) Sugarcane
(b) Wheat
(c) Mustard
(d) Potato

Answer: A

Question. Oxygenic photosynthesis occurs in:
(a) Oscillatoria
(b) Rhodospirillum
(c) Chlorobium
(d) Chromatium

Answer: A

Question. Cyclic photophosphorylation results in the formation of
(a) ATP
(b) NADPH
(c) ATP, NADPH and O₂
(d) ATP and NADPH

Answer: A

Question. Stroma in the chloroplasts of higher plant contains
(a) Light-independent reaction enzymes
(b) Ribosomes
(c) Light-dependent reaction enzymes
(d) Chlorophyll

Answer: A

Question. The first acceptor of electrons from an excited chlorophyll molecule of photosystem II is
(a) Quinone
(b) Cytochrome
(c) Iron-sulphur protein
(d) Ferredoxin

Answer: A

Question. In photosystem-I, the first electron acceptor is
(a) An iron-sulphur protein
(b) Plastocyanin
(c) Cytochrome
(d) Ferredoxin

Answer: A

Question. During photorespiration, the oxygen consuming reaction(s) occur in
(a) Stroma of chloroplasts and peroxisomes
(c) Stroma of chloroplasts and mitochondria
(d) Grana of chloroplasts and peroxisomes

Answer: A

Question. As compared to a C₃ plant, how many additional molecules of ATP are needed for net production of one molecule of hexose sugar by C₄ plants
(a) 12
(b) 0
(c) 6
(d) 2

Answer: A

Question. Photosynthetic Active Radiation (PAR) has the following range of wavelengths
(a) 400 - 700 nm
(b) 450 - 950 nm
(c) 340 - 450 nm
(d) 500 - 600 nm

Answer: A

Question. Chlorophyll-a molecule at its carbon atom 3 of the pyrrole ring II has one of the following
(a) Methyl group
(b) Aldehyde group
(c) Magnesium
(d) Carboxylic group

Answer: A

Question. Which fractions of the visible spectrum of solar radiations are primarily absorbed by carotenoids of the higher plants?
(a) Violet and blue
(b) Red and violet
(c) Green and red
(d) Blue and green

Answer: A

Question. During light reaction of photosynthesis, which of the following phenomenon is observed during cyclic phosphorylation as well as non-cyclic phosphorylation?
(a) Formation of ATP
(b) Involvement of PS I & PS II pigment systems
(c) Formation of NADPH
(d) Release of O₂

Answer: A

Question. NADPH₂ is generated through
(a) Photosystem I
(b) Glycolysis
(c) Anaerobic respiration
(d) Photosystem II

Answer: A

Question. The first step for initiation of photosynthesis will be
(a) Excitement of chlorophyll molecules due to absorption of light
(b) Photolysis of water
(c) ATP formation
(d) Glucose formation

Answer: A

Question. Which pigment system is inactivated in red drop?
(a) PS-II
(b) None of these
(c) PS-I
(d) PS-I and PS-II

Answer: A

Question. In photosynthesis, energy from light reaction to dark reaction is transferred in the form of
(a) ATP
(b) RuDP
(c) Chlorophyll
(d) ADP

Answer: A

Question. Which of the following absorb light energy for photosynthesis?
(a) Chlorophyll
(b) RuBP
(c) Water molecule
(d) O₂

Answer: A

Question. What will be the number of Calvin cycles to generate one molecule of hexose?
(a) 6
(b) 4
(c) 9
(d) 8

Answer: A

Question. Bundle sheath cells
(a) Are rich in RuBisCo
(b) Lack RuBisCo
(c) Are rich in PEP carboxylase
(d) Lack both RuBisCo and PEP carboxylase

Answer: A

Question. Which one of the following organisms is correctly matched with its three characteristics?
(a) Maize : C₃ pathway, Closed vascular bundles, Scutellum
(b) Onion : Bulb, Imbricate aestivation, Axile placentation
(c) Tomato : Twisted aestivation, Axile placentation, Berry
(d) None of these

Answer: A

Question. Presence of bundle sheath is a characteristic of
(a) C₄ plants
(b) Xerophytic plants
(c) Members of the grass family
(d) C₃ plants

Answer: A

Question. In C₄ plants, the bundle sheath cells
(a) Have a high density of chloroplasts
(b) Have large intercellular spaces
(c) Have thin walls to facilitate gaseous exchange
(d) Are rich in PEP carboxylase

Answer: A

Question. The CO₂ fixation during C₄ pathway occurs in the chloroplast of
(a) Mesophyll cells
(b) Spongy parenchyma
(c) Bundle sheath cells
(d) Guard cells

Answer: A

Question. Which pair is wrong?
(a) C₃ -Maize
(b) Calvin cycle-PGA
(c) C₄ -Kranz anatomy
(d) Hatch and Slack cycle – OAA

Answer: A

Question. Which one of the following is wrong in relation to photorespiration ?
(a) It is a characteristic of C₄ plants
(b) Ist oxidation in chloroplast
(c) It occurs in day time only
(d) None of these

Answer: A

Question. Maximum absorption of light occurs in the region of
(a) 400 - 700 nm
(b) 700 – 900 nm
(c) 1500 – 2000 nm
(d) 1000 - 1200 nm

Answer: A

Question. The rate of photosynthesis is higher in
(a) Red light
(b) Green light
(c) Continuous light
(d) Very high light

Answer: A

Question. The law of limiting factors’ was proposed by
(a) Blackman
(b) Arnon
(c) Hatch and Slack
(d) Leibig

Answer: A

Question. Plants adapted to low light intensity have
(a) Larger photosynthetic unit size than the sun plants
(b) More extended root system
(c) Leaves modified to spines
(d) None of these

Answer: A