MCQ BOTANY FOR M.Sc. B.SC

MCQ BOTANY FOR M.Sc. B.SC 

1. Cell membranes are constructed mainly of...

A. Phospholipid bilayers

B. Protein pumps

C.  Glycoproteins

D.  Carbohydrates

Ans A

2. The distribution of Intrinsic protein in the cell membrane is 

a) Symmetric

b) asymmetric

c) uniform

d) random

Ans- b

3. Which of the following transport induced conformational change in protein 

a)  Simple diffusion

b)  Active diffusion

c)  Facilitate diffusion

d) Ion driven active transport

Ans-C

4. The major biomolecule responsible for selective uptake of materials across plasma membrane 

a) Carbohydrate

b) Protein

c) Lipids 

d) Phospholipids

Ans- c

5. All the following substance pass through cell membrane except

a) O2

b) H2O

c) CO2

d) H+

Ans- d

6. What is the outer boundary of the cell 

a) cell wall

b) plasma membrane

c) nuclear membrane 

d) endoplasmic reticulum

Ans- b

7. Which of the solution will have the same solute concentration on both sides of the cell membrane 

a) isotonic

b) hypotonic

c) hypertonic

d) hygrotonic

Ans- a

8. Witch type of the solution will cause cell to swell or even to burst

a) isotonic

b) hypotonic

c) hypertonic

d) hygrotonic

Ans- b

9. The outer part of plant cell is-

a) Cell wall

b) Cell membrane

c) Ectoplast

d) Epidermis

Ans-a

10. Middle lamella is composed of -

a) Cellulose 

b) Hemicellulose

c) Pectin

d) Lignin

Ans- c

11. Smallest unit in cell wall is -

a) Fibrils

b) Middle lamella

c) Micro fibril

d) Micelle

Ans-d

12. Cell wall consist of -

a) Lignin, hemicellulose, pectin and lipid

b) Hemicellulose, pectin, protein and lipid

c) Cellulose, hemicellulose, pectin and Lignin

d) Cellulose, hemicellulose, Tubulin and Lignin

Ans-c

13. Protoplasmic strands between adjacent plant cell are- 

a) Ectodesmata

b) Desmosome

c) Protoplasmic fibrils

d) Plasmodesmata 

Ans-d

14. An element present in middle lamella

a) Calcium

b) Potassium

c) Sodium

d) Iron

Ans-a

15. The average thickness of plasma membrane of a eukaryotic cell is:

A.  5 to 10 nm

B.  5 to 10 Å

C.  5 to 10 µm

D.  5 to 10 pµm

Ans a

16. Which of the following is NOT the function of plasma membrane?

A.  Intercellular interactions

B.  Responding to external stimuli

C.  Energy transduction

D.  Assisting in chromosome segregation

Ans – d

17. Which of the following statements best describes the chemical composition of plasma membrane?

A.  Plasma membrane is composed of two layers—one layer of phospholipids and one layer of proteins.

B.  Plasma membrane is composed of equal numbers of phospholipids, proteins, and carbohydrates.

C.  Plasma membrane is bilayers of proteins with associated lipids and carbohydrates.

D.  Plasma membrane is bilayers of phospholipids with associated proteins and carbohydrates.

Ans-d

18. Glycolipids in plasma membrane are usually located at:

A.  Outer leaflet of plasma membrane

B.  Inner leaflet of plasma membrane

C.  Evenly distributed in both inner and outer leaves of plasma membrane

D.  Cannot be predicted, it varies according to cell types

Ans –a

19. Malarial parasite uses ________ on the plasma membrane of RBC as receptor to enter in the cell

A.  Band 3 protein

B.  Glycophorins

C.  Spectrin protein

D.  Ankyrin proteins

Ans – B

20. Secondary cell wall of plant is -

a) Located outside the primary wall

b) Located inside the Plasma Membrane

c) Located inside the primary wall

d) Located just beneath middle lamellae

Ans-c

21. Which of the following organelle is involved in cell wall formation-

a) Mitochondria

b) Chloroplast

c) Golgi apparatus

d) Lysosome

Ans-C

22. Which statement are not true regarding the cell wall

a) Plant cell wall is made up of cellulose

b) plant cell wall is a non living structure 

c) cell wall provide mechanical support to the cell

d) cell wall is semi permeable 

Ans- d

23. A nonliving structure of cell is -

a) Cell wall

b) Plasma membrane

c) Cytoplasm

d) Nucleus

Ans-a

24. Secondary wall is commonly formed of 

a) Single layer 

b)  Many layer

c) Two layer

d) Three layer

Ans-d

25. Middle Lamella contains 

a) cellulose 

b) pectate

c)lignin

d)cutin

Ans- b

26. Matrix of cell wall is made up of 

a) pectin

b) hemicellulose

c) glycoprotein

d)cellulose

Ans-a

27. Hydrophilic chemical of cell wall is 

a) pectin

b) suberin

c) fat

d) lignin

Ans-a

28. Cellulose micro fibrils get bound to pectin of matrix through -

a) hemicellulose

b) lignin

c) peptidoglycan

d) glycoprotein

Ans-a 

29. Which is the outer most structure of cell wall

a) primary wall

b) secondary wall

c) tertiary wall

d) middle lamella

Ans-d

30. The inner most layer of cell wall is 

a) tertiary wall, if present

b) secondary wall

c) primary wall

d) middle lamella 

Ans-a

31. Which component of cell wall is normally contact with plasma membrane

a) primary wall

b) secondary wall

c) plasmodesmata

d) middle lamella 

Ans-b

32. Primary wall grows by

a) Accretion

b) Introgression

c) Intussusception

d) All the above

Ans-c

33. Secondary wall is commonly formed of 

a) single layer

b) double layer

c) triple layer

d) many layer

Ans- c

34. Primary wall is generally elastic due to absence of 

a) lignin

b) suberin

c) Cutin

d) Silica

Ans-a

35. Plant cell are distinguishable from animal cell in containing 

a) mitochondria

b) Ribosome

c) E.R.

d) Cell wall

Ans-d

36. The structural material of fungal cell wall is

a) Pectin

b) Cellulose

c) Peptidoglycan

d) Chitin

Ans-d 

37. Fruits are ripe due to -

a) degeneration of cell wall

b) partial solubilisation of pectic compound

c) metabolism of tannins

d) exosmosis

Ans- b

38. Hardness of woody tissue is due to -

a) silica

b) lignin

c) cellulose

d) suberin

Ans- b

39. Cellulose content is high in-

a) primary cell wall

b) secondary cell wall

c) tertiary cell wall

d) middle lamella 

Ans-b

40  Tertiary wall is known from 

a) compression wood of dicot

b) tension wood of gymnosperm

c) cotton fibers

d) all hard wood 

Ans-b

41. Plasmodesmata were discovered by -

a) hanstein

b) koliker

c) strasburger

d) garnier

Ans-c 

42. Part of ER present in plasmodesmata is called

a) desmotubule 

b) cisterna

c) vesicle

d) myeloid body

Ans- a

43. Pit membrane consist of -

a) primary wall

b) middle lamella

c) middle lamella + primary wall 

d) primary wall + middle lamella+ primary wall

Ans-d

44. A pit present in the wall of cell lying adjacent to an intercellular space is

a) complete pit

b) blind pit

c) a pit without its partne 

d) Both B and C

Ans-d

45. A disc shaped thickening present on the pit membrane called-

a) torus 

b) callus

c) tylosis

d) stoma

Ans-a

46. Fluid mosaic model of plasma membrane was proposed by -

a) Malpighi

b) Danielli and Davson

c) Robertson

d) Singer and Nicolson

Ans- d

47. Cellulose and hemicellulose are 

a) Disaccharides

b) Polysaccharides 

c) Polypeptide

d) Phospholipids

Ans-b

48. Transport molecules of cell membrane are

a) Lipids

b) Phospholipids

c) Glycolipids

d) Proteins

Ans-d

49. Rigidity of cell wall is due to -

a) Pectin

b) Lignin

c) Cellulose

d) Cutin 

Ans-b

50. The colourless part of chloroplast is 

a) Grana

b) Stroma

c) Thylakoid

d) Non of the above

Ans- b