CBSE Questions for Class 11 Medical Biology Photosynthesis In Higher Plants Quiz 5 - MCQExams.com

Carbon refixation in $$C_4$$ plants occur in chloroplasts of
  • Palisade tissue
  • Spongy mesophyll
  • Bundle sheath cells
  • Gaurd cells
What is the first stable intermediate product of photosynthesis?
  • Glucose
  • Formaldehyde
  • Phosphoglyceric acid
  • PGAL
In cyclic photophosphorylation which one of the following is formed?
  • NADP and ATP
  • ATP
  • $$NADH_2$$ and $$O_2$$
  • $$NADPH_2$$, ATP and $$O_2$$
Chloroplast is present in bundle sheath cells of 
  • $$C_3$$ plants
  • $$C_4$$ plants
  • CAM plants
  • Photorespiring plants
The family in which many plants are $$C_4$$ type is
  • Malvaceae
  • Solanaceae
  • Crucifereae
  • Graminae
In dark reaction, first reaction is 
  • Carboxylation
  • Decarboxylation
  • Dehydrogenation
  • Deamination
The enzyme which catalyzes the photosynthetic $$C_4$$ cycle is
  • RUBP carboxylase
  • PEP carboxylase
  • Carbonic anhydrase
  • None of the above
In case of C-4 pathway, the first step is
  • $$CO_2$$ combines with RUDP
  • $$CO_2$$ conbines with PGA
  • $$CO_2$$ combines with PEP
  • $$CO_2$$ combines with RMP
$$C_4$$ plants are adapted to
  • Hot and dry climate
  • Temperate climate
  • Cold and dry climate
  • Hot and humid climate
All the reactions from the reduction of $$CO_2$$ to the formation of sugar are included in:
  • Light reaction
  • Photolysis
  • Dark reaction
  • Hill reaction
Ribulose diphosphate carboxylase enzyme, catalyse the carboxylation reaction between
  • $$CO_2$$ and ribulose-1, 5-diphosphate
  • Oxaloacetic acid and acetyl Co-A
  • PGA and dihydroxyacetone phosphate
  • Ribulose diphosphate and phosphate glyceraldehyde
C$$_4$$ plants are found among
  • Only gramineae
  • Only monocot
  • Only dicot
  • Monocots as well as dicots
Which of the following is $$C_4$$ plant?
  • Maize
  • Atriplex
  • Sugarcane
  • All of the above
In $$C_4$$ plants, fixation of carbon dioxide occurs in
  • Transfusion tissue
  • Palisade tissue
  • Cortex of stem
  • Spongy mesophyll and bundle sheath cells.
Most efficient photosynthesis and presence of bundle sheath chloroplast are characteristics of
  • $$C_3$$  plants
  • $$C_2$$  plants
  • $$C_4$$ plants
  • CAM plants
Photorespiration occurs in which of the following cell organelles?
  • Mitochondria
  • Chloroplast
  • Peroxisome
  • All of the above
What is $$C_2$$ Cycle?
  • Glycolate cycle
  • Calvin cycle
  • Krebs cycle
  • TCA cycle
In sugar cane plant carbon is fixed in malic acid, in which the enzyme that fixes $$CO_2$$ is
  • Ribulose biphophate carboxylase
  • Phospoenol pyruvate carboxylase 
  • Ribulose phosphate kinase
  • Fructose phosphatase
Bundle sheath chloroplast of $$C_4$$ plant are
  • Large and agranal
  • Large and granal
  • Small and agranal
  • Small and granal
Plants which exhibit photorespiration are:
  • $$C_4$$ plants
  • $$C_3$$ plants
  • CAM plants
  • Alpine plants
Hatch and Slack pathway occurs in
  • Amaranthus
  • Atriplex rosea
  • Saccharum
  • All of the above
In $$C_4$$ pathway the fixation of $$CO_2$$ by PEP carboxylase occurs in
  • Palisade tissue
  • Mesophyll
  • Bundle sheath
  • Guard cell
How many type of photosynthetic cells occur in $$C_4$$ plants?
  • One type
  • Two type
  • Four type
  • Eight type
$$CO_2$$ is accepted by RUBP in $$C_4$$ plants in
  • Mesophyll cells
  • Bundle sheath cells
  • Stomatal guard cells
  • Epidermal cells
Which one is false about Kranz anatomy?
  • Bundle sheath cells have large chloroplast and less developed grana.
  • Bundle sheath cells have large chloroplast and more developed grana.
  • It is found in Atriplex, sugarcane, maize.
  • Plant having it have better photosynthesizing power than $$C_{3}$$ plants.
Kranz anatomy is found in the leaves of 
  • C$$_{3}$$ plants.
  • C$$_{4}$$ plants.
  • Both C$$_{3}$$ and C$$_{4}$$ plants.
  • None of the above.
As compound to a $$C_3$$-plant how many additional of one molecules of hexose sugar by $$C_4$$-plants?
  • Two
  • Six
  • Zero
  • Twelve
Which of the following plants have low CO$$_2$$ compensation point?
  • C$$_3$$ plants
  • C$$_4$$ plants
  • C$$_2$$ plants
  • Alpine plants
Photorespiration occurs during
  • Respiration.
  • Photosynthesis.
  • Transpiration.
  • Translocation.
What does not occur in photorespiration?
  • Utilization of $$O_2$$
  • Production of $$CO_2$$
  • Synthesis of ATP
  • All of the above
In the leaves of $$C_4$$ plants, malic acid formed during $$CO_2$$ fixation occurs in the cells of
  • Epidermis.
  • Mesophyll.
  • Bundle sheath.
  • Phloem.
Glycolate accumulates in chloroplast at
  • Low temparature
  • Low $$CO_2$$
  • Visible light illumination
  • High $$CO_2$$
Photorespiration does not occur in what type of plants?
  • $$C_4$$ plants
  • $$C_3$$ plants
  • $$C_2$$ plants
  • None of the above
Product (s) of light reaction of photosynthesis is (are)
  • Carbohydrates.
  • ATP.
  • NADP and O$$_2$$.
  • NADPH$$_2$$, ATP and O$$_2$$.
The substrate for photorespiration is 
  • Glycolate.
  • Glucose.
  • Lipid.
  • Sucrose.
The first carbon dioxide acceptor in $$C_{4}$$ plant is
  • Phosphoenolpyruvate.
  • Oxaloacetic acid.
  • Phosphoglyceric acid.
  • Ribulose 1, 5- diphosphate.
Agranal chloroplasts occur in 
  • Succulent plants.
  • $$C_{3}$$ plants.
  • $$C_{4}$$ plants.
  • Hydrophytes.
The $$C_{4}$$ plants are different from the $$C_{3}$$ plants with reference to the
  • Types of pigments involved in photosynthesis.
  • The number of NADPH that are consumed.
  • End product.
  • The substance that accepts $$CO_{2}$$ in carbon assimilation and first stable product.
In case of $$C_{4}$$ plants, the acceptor of $$CO_{2}$$ is
  • Phosphoglyceraldehyde.
  • Ribulose monophosphate.
  • Phosphoenolpyruvate.
  • Ribulose diphosphate.
Which of the following are related with photorespiration?
  • Spherosome
  • Lysosomes
  • Glyoxysomes
  • Peroximomes
NADP reduces to NADPH$$_{2}$$ in 
  • PS- I
  • PS- II
  • Calvin cycle
  • Non-cyclic photophosphorylation
The full form of NAD is
  • Adenosine diphosphate.
  • Nicotinamide adenosine dinucleotide.
  • Nicotinamide adenine dinucleotide.
  • None of the above.
The first acceptor of $$CO_{2}$$ in $$C_{4}$$ plant is ______.
  • Pyruvic acid
  • Phosphoenol pyruvic acid
  • Acetic acid
  • Oxaloacetic acid
The first reaction in photorespiration is
  • Carboxylation.
  • Decarboxylation.
  • Oxygenation.
  • Phosphorylation.
In $$C_{4}$$ plants, the initial $$CO_{2}$$ fixation takes place in the chloroplasts of the
  • Guard cells.
  • Spongy mesophyll.
  • Palisade tissue.
  • Bundle sheath.
Which one of the following is a wasteful process?
  • Photorespiration
  • Respiration
  • Photosynthesis
  • ETS
Photorespiration takes place in which of the following organelles?
  • Chloroplast and mitochondria.
  • Mitochondria and peroxisome.
  • Bundle sheath cells and chloroplasts.
  • Chloroplast, peroxisome and mitochondria.
A cell organelle that is essential for photorespiration is
  • Ribosome.
  • Dictyosome.
  • Peroxisome.
  • Glyoxysome.
Peroxisome is associated with................
  • Photorespiration.
  • Photosynthesis.
  • Photoperiodism.
  • Phototropism.
Calvin cycle of $$C_{4}$$ plants operates in the
  • Grana of mesophyll chloroplasts.
  • Stroma of chloroplasts in mesophyll cells.
  • Bundle sheath cells of chloroplasts.
  • None of the above.
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