12-botany-unit-v & VI Plant Physiology & Biology In Human Welfare

64 Questions | By Padasalai12bot | Updated: Mar 21, 2022 | Attempts: 523

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Prepared by Mr. D. Rajamani, M. Sc. ,M. Ed. , P. G. Asst Botany A. C. S Mat. Hr Sec. School, Arni. Tiruvannamalai Dist ; &nbs p; & www. Padasalai. Net

Questions and Answers

1.

The term enzyme was coined by
- A.
  
  Kuhne
- B.
  
  Fischer
- C.
  
  Buchner
- D.
  
  Koshland
2.

The lock and key theory of enzyme action was proposed by
- A.
  
  Fischer
- B.
  
  Kuhne
- C.
  
  Buchner
- D.
  
  Koshland
3.

An example for transverase is
- A.
  
  Transaminase
- B.
  
  Pyruvic carboxylase
- C.
  
  Histidine decarboxylase
- D.
  
  G-3-P dehydrogenase
4.

Photosynthesis takes place in
- A.
  
  chloroplasts
- B.
  
  Mitochondria
- C.
  
  Peroxisomes
- D.
  
  ribosomes
5.

During cyclic electron transport, which one of the following is produced
- A.
  
  ATP only
- B.
  
  NADPH2 only
- C.
  
  NADH2 only
- D.
  
  both ATP and NADPH2
6.

Which one of the following is a five carbon compound?
- A.
  
  Ribose
- B.
  
  DHAP
- C.
  
  fructose
- D.
  
  erythrose
7.

The essential component for the formation of chlorophyll
- A.
  
  Mg
- B.
  
  Fe
- C.
  
  Cl
- D.
  
  Mn
8.

Which one of the following is a C4 plant?
- A.
  
  Sugarcane
- B.
  
  Potato
- C.
  
  Rice
- D.
  
  Wheat
9.

Which of the following bacterium oxidizes ammonia to nitrate
- A.
  
  Nitrosomonas
- B.
  
  Rhizobium
- C.
  
  Closteridium
- D.
  
  E. coli
10.

The pigment which is highly efficient in absorbing solar energy is
- A.
  
  Chlorophyll
- B.
  
  Phycobilins
- C.
  
  Carotinoids
- D.
  
  Xanthophyll
11.

Which of the following is a total parasite
- A.
  
  Cuscuta
- B.
  
  Viscum
- C.
  
  Drosera
- D.
  
  Monotropa
12.

Which of the following wavelengths of light is most effective for photosynthesis
- A.
  
  400 nm to 700 nm
- B.
  
  700 nm to 900 nm
- C.
  
  100 nm to 200 nm
- D.
  
  200 nm to 300 nm
13.

Dark respiration is the function of
- A.
  
  Mitochondria
- B.
  
  Peroxisomes
- C.
  
  Chloroplast
- D.
  
  Ribosome
14.

Dark reaction is also known as
- A.
  
  Calvin cycle
- B.
  
  Krebs cycle
- C.
  
  Pentosephosphate pathway
- D.
  
  photorespiration
15.

The gas evolved during photosynthesis is
- A.
  
  Oxygen
- B.
  
  hydrogen
- C.
  
  carbondioxide
- D.
  
  Nitrogen
16.

C4 pathway is otherwise known as
- A.
  
  Hatch-Slack pathway
- B.
  
  EMP pathway
- C.
  
  photorespiration
- D.
  
  Electron transport chain
17.

An example for insectivorous plant is
- A.
  
  Drosera
- B.
  
  Viscum
- C.
  
  Monotropa
- D.
  
  Vanda
18.

Photorespiration is otherwise called as
- A.
  
  C2 cycle
- B.
  
  C3 cycle
- C.
  
  C4 cycle
- D.
  
  C5 cycle
19.

Which of the following is regarded as primary pigment?
- A.
  
  Chlorophyll ‘a’
- B.
  
  Chlorophyll ‘b’
- C.
  
  Carotenoid
- D.
  
  Xanthophyll
20.

The dark reactions of photosynthesis were discovered by
- A.
  
  Melvin Calvin
- B.
  
  Krebs
- C.
  
  Embden and Meyer
- D.
  
  Parnas
21.

Which of the following is a 5C compound?
- A.
  
  RuBP
- B.
  
  Glucose
- C.
  
  Fructose
- D.
  
  Phosphoglyceric acid
22.

In C3 plants light reactions and dark reactions occur in
- A.
  
  Mesophyll cells
- B.
  
  bundle sheath cells
- C.
  
  Epidermal cells
- D.
  
  Vascular cells
23.

In C3 pathway acceptor molecule of CO2 is
- A.
  
  RuBP
- B.
  
  Phosphoenol pyruvate
- C.
  
  PGA
- D.
  
  DHAP
24.

Which of the following is not a C4 plant?
- A.
  
  Wheat
- B.
  
  Amaranthus
- C.
  
  Maize
- D.
  
  Tribulus
25.

Vanda plant is a/an ----
- A.
  
  Epiphyte
- B.
  
  total parasite
- C.
  
  Partial parasite
- D.
  
  Saprophyte