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  #2  
24th September 2014, 01:42 PM
Super Moderator
 
Join Date: Apr 2013
Re: ICAR ARS NET Mains Exam Paper

Here is the list of few questions of Agricultural Biotechnology Paper of the ICAR ARS NET Mains Exam which you are looking for .

1. Which of the following pairs are anomers?
a) Ribose and Ribulose
b) Glucose and mannose
c) Pyruvate lactate
d) α-D-glucose and β-D-glucose
2. Hybridoma technology is used in the production of
a) mRNA
b) Monoclonal serum
c) Monoclonal antibodies
d) Polyclonal antibodies
3. For mitochondrial structure and function mt-DNA specifies
a) 10%
b) 20%
c) 30%
d) 40%
4. Which of the following reagent is useful for visualizing DNA?
a) Uracil
b) DNA polymerase
c) Diphenylamine
d) Ethidium bromide
5. Homologous pairs line up along equatorial plane during
a) Anaphase II
b) Metaphase I
c) Telophase
d) Interphase
6. Between mitotic divisions, the cell is in
a) G0
b) G1
c) G2
d) S phase
7. Most plant cells are surrounded by a rigid cell wall made primarily of
a) Monosaccharides
b) Pectin
c) Chitins
d) Polysaccharides
8. The organelle that functions in the breakdown of cells and tissues is the
a) Episomes
b) Mitochondrion
c) Centrosomes
d) Lysosomes
9. Endoplasmic reticulam
a) Is found only in animals
b) is a system of membrane bound channels
c) is called rough if mitochondria is attached to it
d) is a site of ATP production
10. “9+2” describes the basic structure of which of the following one
a) chromosome
b) Basal body
c) Chloroplast
d) Flagellum
11. The function of nucleus includes
a) Cellular respiration
b) Synthesis of proteins
c) Housing the hereditary information
d) Synthesis of carbohydrates
12. Bacculoviruses
a) RNA viruses
b) DNA viruses
c) Both a and b
d) None of the above
13. Secondary metabolites like antibiotics are not essential for
a) Log phase growth
b) Exponential growth
c) Both a and b
d) None of these
14. The restriction enzymes useful to the molecular biologist belongs to
a) Type I
b) Type II
c) Type III
d) Type IV
15. Which of the following vector is suitable for DNA sequencing
a) EMBL
b)PBR 322
c) M 13
d) Lambda
16. During which process, the free end of the chromosome moves from Hfr donor in to the F cell across an intracellular bridge called piles
a) Transformation
b) Transduction
c) Conjugation
d) All of these
17. Francis Jacob and Monod Proposed
a) Lock and Key Hypothesis
b)Gene for Protein Synthesis
c) Operon Synthesis
d) Gene for protein synthesis
18. State which of the following is not a desired characteristic of a vector?
a) Unique restriction site
b) Large Size
c) Gene that confer antibiotic resistance
d) Autonomous replication
19. Which of the following is a carrier hosts for new genes?
a) EcoRI
b) Bacteriophages
c) Nucleus
d) Transplanted Organs
20. Which of the following chemical is used for preparation of competent cell?
a) HCl
b) NaCl
c) CaCl2
d) Glycine
  #3  
20th March 2015, 01:03 PM
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Re: ICAR ARS NET Mains Exam Paper

Can you provide me some questions from the ICAR ARS (Indian Council of Agricultural Research Agricultural Research Service) NET Mains Exam Paper?
  #4  
20th March 2015, 01:04 PM
Super Moderator
 
Join Date: Apr 2013
Re: ICAR ARS NET Mains Exam Paper

Some questions from the ICAR ARS (Indian Council of Agricultural Research Agricultural Research Service) NET Mains Exam Paper are as follows:

PLANT PHYSIOLOGY

1. Describe the structure and function of Peroxisomes.

2. Discuss the kinetics of an enzyme mediated reaction

3. Explain the concept of SPAC. What is its significance?

4. Describe the dual isotherm model of Epstein of the kinetics of ion uptake. Describe the location of the two system involved

5.Discuss the glyoxylate cycle operative in oil bearing seeds. Explain how this cycle is involved in gluconeogenesis.
6. Discuss the structure, function and mode of action of phytochrome.

7.Describe the biosynthetic pathway of ethylene in higher plants, explaining especially as to how the thio-methyl group of methionine is cycled to sustain continual production of ethylene.

8. Explain the molecular basis of drought tolerance in plants.
(a) What are the chemical approaches used for the study of such complex polymers as cutin, suberin and waxes?
(b)Describe the chemical composition of any one of these polymers.

9. What is photorespiration? Describe the molecular events of this process with special reference to the role of Peroxisomes. How will you regular the photorespiration in C3 plants.

10.Write a critical account of the experimental evidences leading to the two-light reaction concept of the photochemical phase in green plant photosynthesis.
11.Describe briefly the aspects of moisture stress on various biochemical and physiological processes of a plant.

12.Define phytochrome. Discuss the structure, function and mode of action of phytochrome. List out the morphogenetic responses regulated by phytochrome in plants

13.Give a brief account of the results of experiments which led to the discovery of photoperiodism. Examine critically the evidence for the involvement of hormone in this phenomenon.

14. What are the fundamental principles involved in the design of experiments? Explain the completely Randomised Block Design with the help of suitable examples.

15.(a) What is the biochemical, physiological and morphological responses of crop plants to salt stress?
(b) Discuss the key role of ABA during drought stress.
16.(a) Describe the response of crop plants to zinc, boron, copper and molybdenum.
(b) Briefly discuss how plant processes are affected by trace metal toxicity and mechanisms of trace metal tolerance in crop plants.

17.(a) Classify the herbicides based on their mode of action.
(b) Enumerate the mechanisms of herbicide resistance in crop plants.
(c) How tissue culture techniques can be put into use for evaluation of herbicide resistant plants?

18. Write short notes:
a) Cell permeability
b) Anti –transpirants
c) Nitrogen use efficiency
d) Water use efficiency
e) Oxidative phosphorylation
f) Peroxisomes
g) Oil bodies in plants
h) Structure and function of nitrogenise
i) CO 2 concentrating the mechanism in C 4 plants?
j) Cyanide resistant respiration
k) Vernalization

GENERAL AGRICULTURE
1. International Institute of Tropical Agriculture is situated at
a) Japan
b) Nigeria
c) Syria
d) India
2. The propagation method “layering” is mainly done in
a) Sweet orange
b) Mango
c) Lemon
d) Banana
3. The largest living animal on the earth is
a) Lion
b) Elephant
c) Blue Whale
d) Buffalo

4. Which group of plants has maximum water use efficiency?
a) C3
b) C4
c) CAM
d) None
5. The longest phase in Mitosis is
a) Prophase
b) Telophase
c) Metaphase
d) Anaphase

6. The unsaturated fatty acids is determined by
a) Iodine number
b) Saponification between
c) Both
d) None

7. The fast growing tree species is
a) Neem
b)Cassia
c) Eucalyptus
d) Banyan

8. Ozone layer in the atmosphere absorbs
a) Ultraviolet radiation
b) Infra red radiations
c) Total solar radiations
d) All of these

9. Fruits are generally ___ in nature
a) Acidic
b) Alkaline
c) neutral
d) None

10. The casparian strips is present in




a) Cortex
b) Endodermis
c) Root hair
d) Epidermis

11. The green house effect is cause due to
a) Depletion of ozone layer
b) Increase in CO2 in the atmosphere
c) Incoming UV rays on the earth
d) Absorption of outgoing long wave radiation

12. Biochemical found in fish, which is responsible for cardiovascular disease
a) Trimethylamine
b) Omega 3 fatty acids
c) Polyunsaturated fatty acids
d) Incoming UV rays on the earth

13. Freezing point depression of a chemical solution is measured by
a) Osmometer
b) Viscometer
c) Calorimeter
d) None of these
14. The sex linked genes are found on the
a) Z-chromosome
b) X-chromosome
c) S-chromosome
d) B-chromosomes

15. Which one of the following is not a fish?
a) Silver fish
b) Milk fish
c) Bombay Duck
d) Dog fish

Answers
Nigeria
Lemon
Blue Whale
CAM
Prophase
Iodine number
Eucalyptus
Ultraviolet Radiations
Acidic
Endodermis
Increase in CO2 in the atmosphere
Omega 3 fatty acids
Osmometer
X-chromosome
Silver fish


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