MCQ Pharmacognosy UNIT - 3 (TEST - 6)

 

PHARMACOGNOSY MCQ (TEST 6)  

MULTIPLE CHOICE QUESTIONS

S. Y. B.PHARM (UNIT-3) SEM-IV 

AS PER PCI SYLLABUS

1. Out of the following, which one is NOT the basic component of culture media used for plant cultivation?

  A) Complex mixture of salts  
B) Amino acids
C) Serum albumin
D) Sugar/ sucrose

... Answer is C)
Serum albumin. "

2. Mark the INCORRECT statement about agar, a gelling agent in plant tissue culture medium?

A) Not digested by plant enzymes
B) It does not use in microprapogation work
C) It does not react with media constituents
D) Remain stable at incubation temperature

... Answer is B)
It does not use in microprapogation work. .

3. Which of the following is NOT a plant growth regulator?

A) Auxin
B) Abcisic acid
C) Polyphenols
D) Cytokinins

... Answer is C)
Polyphenols

4. Which of the following is the main effect of cytokines in the tissue culture system?

A) Induction of somatic embryos
B) Adventitious shoot formation
C) Adventitious root formation
D) Shoot elongation

... Answer is B)
Adventitious shoot formation "

5. Which one of them is NOT the main effect of polyamines in the tissue culture system?

A) Somatic embryogenesis
B) Promotion of shoot formation
C) Adventitious root formation
D) Promotion of tuber and bulb formation

... Answer is D)
Promotion of tuber and bulb formation. .

6.Which of the following plant hormone control fruit ripening? .

A) Auxin
B) Ethylene
C) Gibbrellins
D) Abscisis acid

... Answer is B)
Ethylene .

7. Totipotency refers to...

A) Capacity to generate a whole plant from any plant cell / explant.
B) Capacity to generate genetically identical plants.
C) Capacity to generate hybrid protoplasts.
D) Recovery of healthy plants from diseased plants.

... Answer is A)
Totipotency refers to capacity to generate a whole plant from any plant cell / explant..

8. The prevention of large scale loss of biological interity

A) Biopatent
B) Bioethics
C) Biofuel
D) Biosafety

... Answer is D)
(c) Biosafety

9. Cryopreservation means it is a process to preserve plant cells, tissues or organs

A) at very low temperature by using ether.
B) at very high temperature by using liquid nitrogen
C) at very low temperature of -196 by using liquid nitrogen
D) at very low temperature by using liquid nitrogen

... Answer is C)
(c) at very low temperature of -196 by using liquid nitrogen. .

10. Solidifying agent used in plant tissue culture is

A) EDTA
B) Cobaltous chloride
C) Nicotinic acid
D) Agar

... Answer is D)
Solidifying agent used in plant tissue culture is Agar. "

11. Organogenesis is

A) formation of root and shoots on callus tissue.
B) formation of callus tissue
C) both (A) and (B)
D) genesis of organs

... Answer is A)
Organogenesis is formation of root and shoots on callus tissue. .

12. Which of the following is used in the culture of regenerating protoplasts, single cells or very dilute cell suspensions?

A) Nurse medium
B) Nurse or feeder culture
C) both (A) and (B)
D) All of the above

... Answer is C)
both (A) and (B) .

13. In a callus culture

A) only auxin is required for root and shoot formation
B) auxins and cytokinins are not required
C) increasing level of auxin to a callus induces shoot formation and increasing level of cytokinin promote root formation
D) increasing level of cytokinin to a callus induces shoot formation and increasing level of auxin promote root formation

... Answer is D)
In a callus culture increasing level of cytokinin to a callus induces shoot formation and increasing level of auxin promote root formation .

14. Protoplasts are the cells devoid of ...

A) cell membrane
B) cell wall
C) both cell wall and cell membrane
D) none of these

... Answer is B)
Protoplasts are the cells devoid of cell wall . .

15. In batch culture the cell number or biomass exhibits typical

A) Sigmoidal curve
B) Trigonal curve
C) Linear curve
D) None of the above

... Answer is A)
Sigmoidal curve. .

16. In batch culture when the cell number or biomass remains unchanged is known as..

A) log phase
B) Stationary phase
C) Lag Phase
D) Mid phase

... Answer is C)
In batch culture when the cell number or biomass remains unchanged is known as Lag Phase. .

17. In batch culture when there to rapid increase in cell number is termed as:

A) log phase
B) Mid phase
C) Stationary phase
D) Lag Phase

... Answer is A)
In batch culture when there to rapid increase in cell number is termed as log phase. .

18. In batch culture when the cell number gradually declines is termed as: -

A) Mid phase
B) log phase
C) Lag Phase
D) Stationary phase

... Answer is D)
In batch culture when the cell number gradually declines is termed as Stationary phase. .

19. The continous culture is of

A) Closed type
B) Open type
C) Both A and B
D) Lower type

... Answer is C)
Both A and B .

20. Suspension cultures should be subcultured after every:

A) 4 to 6 weeks
B) 1 to 2 days
C) 3 to 14 days
D) 2 to 3 days

... Answer is C)
Suspension cultures should be subcultured after every 3 to 14 days. .