NEET WEEKEND TEST - 3

Student Name: __________________________________ Class: NEET

BOTANY
SECTION - A
1. What kinds of factors govern a plant’s developmental process?
(1) Intrinsic factors (2) Extrinsic factors
(3) Both (1) and (4) None of these
2. Why the growth of a plant is unique?
(1) The plant retains the capacity of unlimited growth.
(2) The plant can regenerate the same characters.
(3) There is no change in offspring’s characters.
(4) None of the above
3. Cells that further make up the plant body ________ .
(1) Loose capacity to divide (2) Loose capacity to grow
(3) Loose capacity to differentiate (4)None of these
4. Meristems are responsible for ________
(1) Secondary growth (2) Primary growth
(3) Both (1) and (2) (4) None of these
5. Which of the following is not the parameter for measuring growth?
(1) Wet weight (2) Dry weight (3) Volume (4) Cell member
6. Which of the following represent meristematic phase of growth?
(1) Root apex (2) Shoot apex (3) Both (1) and (2) (4) None of these
7. Which of the following are characteristics of the cells in meristematic region?
(1) Rich in protoplasm (2) Large nuclei
(3) Thin plasma membrane (4)Both(1) and (2)
8. Cells of maturative phase show
(1) Thickening of walls (2) Protoplasmic modification
(3) Both (1) and (2) (4) None of these
9. Examples of arithmetic growth is/are
(1) Root elongation (2) Increase in girth
(3) (3) Both (1) and (2) (4) None of these
10. Stationary phase occurs due to
(1) Increase in distance (2) Limited nutrient supply
(3) Thickening of cell wall (4) None of these
11. Living organism growing in a natural environment can be found graphically by the presence of
(1) Sigmoid curve (2) Linear curve (3) Straight line (4) All of these
12. In expression of exponential growth ‘r’ is referred to as
(1) Growth rate (2) Efficiency index
(3) Both (1) and (2) (4) Time of growth
13. Which of the following are not essential elements for growth?
(1) Water (2) Oxygen (3) Both (1) and (2) (4) None of these
14. The process of derivation of cells from meristems and maturation to perform specific function is
known as ________
(1) Regeneration (2) Dedifferentiation
(3) Redifferentiation (4) differentiation
15. What changes would occur in a cell to form a treachery element?
(1) Loose their protoplasm (2) Strong, elastic, lignocelluloses secondary cell wall
(3) Both (1) and (2) (4) None of these
16. What is the phenomenon of dedifferentiation?
(1) Regaining the capacity to divide
(2) Loosing the capacity to divide
(3) Loosing the capacity to divide after regaining
(4) All of these
17. On whose response the plasts follow different pathways to form different kind of structures?
(1) Environment (2) Phases of life (3) Both (1) and (2) (4) None of these
18. In which of the following plant the leaves of juvenile plant are different in shape than those in
mature plants?
(1) Cotton (2) Coriander (3) Larkspur (4) All of these
19. Intrinsic factor for plant development includes
(1) Intercellular (2) Intracellular (3) Both (1) and (2) (4) None of these
20. Oxygen is exchanged in which phase of plant development?
(1) Former (2) Latter (3) Both (1) and (2) (4) None of these
21. Match the following for PGR.
Column I Column II
A. IAA – i. Carotenoids
B. Kinetin – ii. Terpenes
C. ABA – iii. Indole compounds
D. GA3 – iv. Adenine derivatives
(1) (A–iii) (B–iv) (C–i) (D–ii) (2) (A–i) (B–iii) (C–ii) (D–iv)
(3) (A–iv) (B–ii) (C–iii) (D–i) (4) (A–ii) (B–i) (C–iv) (D–iii)
22. N6–furfurylamino purine is which derivative?
(1) Indole compounds (2) Adenine (3) Terpenes (4) Carotenoids
23. Who initiated the discovery of plant growth hormones?
(1) Charles Darwin (2) Francis Darwin (3) Both (1) and (2) (4) None of these
24. Auxins are discovered by
(1) Charles Darwin (2) Francis Darwin (3) F. W. Went (4) Both (1) and (2)
25. Gibberellafujikuroicauses what disease in rice plants?
(1) Foolish seeding (2) Bikaner (3) Both (1) and (2) (4) None of these
26. Who repotted that the symptoms reappeared in uninfected plants treated with sterile filtrate
ofgiberella fungus?
(1) E. Kurosawa (2) F. Skoog (3) Both (1) and (2) (4) None of these
27. Skoog and miller termed cytokinin as
(1) Cytokinesis (2) Kinetin (3) Both (1) and (2) (4) None of these
28. Which three different kinds of inhibitors were found in mid-1960s?
(1) Inhibitor–A, Abscission–II and dormin
(2) Inhibitor–B, Abscission–II and dormin
(3) Inhibitor–A, Abscission–III and dormin
(4) Inhibitor–B, Abscission–III and dormin
29. All individually found inhibitors in mid-1960s were later named as
(1) Gibberellic acid (2) Auxin (3) Abscisic acid (4) None of these
30. The volatile substance causing ripening of unripened bananas?
(1) Abscisic acid (2) Auxin (3) Ethylene (4) Terpenes
31. How many of the following auxins are obtained from plants?
IAA, IBA, NAA, 2, 4–D
(1) 1 (2) 2 (3) 3 (4) 4
32. 2, 4–D stands for ________
(1) 2, 4–Dichlorophenoxy acetate (2) 2, 4–Dextrophenoxy acetate
(3) 2, 4–Diphosphenoxy acetate (4) 2, 4–Dichloromethoxy acetate
33. Synthetic auxins are extesively used in
(1) Agriculture (2) Horticulture (3) Both (1) and (2) (4) None of these
34. Which effect of auxin is applied worldwide for plant propagation?
(1) Apical dominance (2) Herbicidal action
(3) Initiate rooting in stem cutting (4) None of these
35. Auxins promote flowering in
(1) Tomatoes (2) Pineapples (3) Oranges (4) None of these

SECTION - B
36. What can help removing apical dominance?
(1) Removal of shoot tips (2) Provide plants with a lot of auxin
(2) Both (1) and (2) (4) None of these
37. Decapitation is widely used for
(1) Tea plantation (2) Hedge making (3) Both (1) and (2) (4) None of these
38. Different types of gibberellins is reported from what kind of organisms?
(1) Fungi (2) Higher plants (3) Both (1) and (2) (4) None of these
39. Which ability of gibberellins is used to increase the length of grape stalks?
(1) Ability to increase apically (2) Ability to increase in length of axis
(3) Ability to avoid apical dominance (4) All of these
40. On spraying gibberellins on sugarcane crops what major change will it bring?
(1) Increase sweetness (2) Increase length of stem
(3) Increase root strength (4) All of these
41. Spraying of gas on juvenile conifers causes
(1) Early flowering (2) Early germination
(3) Early seed production (4) All of these
42. How many of the following PGRs help to overcome apical dominance? Auxins, Gibberellins,
Cytokinins, Ethylene
(1) 1 (2) 2 (3) 3 (4) 4
43. What are the influences of ethylene on plants?
(1) Horizontal growth of seedlings (2) Swelling of the axis
(3) Apical hook formation in dicot seedling (4) All of these
44. How does ethylene help plants to increase their absorption surface?
(1) Promotes growth of root (2) Promotes formation of root hair
(3) Both (1) and (2) (4) None of these
45. Which of the following is a characteristic of ethephon?
(1) Readily absorbed (2) Transported within the plant
(3) Releases ethylene slowly (4) All of these
46. 170. How does ethephon increase the yield of cucumber?
(1) Promotes senescence (2) Promotes female flowers
(3) Promotes male flowers (4)Both(1) and (2)
47. Which of the following events are controlled by extrinsic factors via PGR?
(1)Vernalisation (2) Flowering (3) Dormancy (4) All of these
48. What kind of plants require the exposure to light for a period less than critical duration?
(1) Short day plants (2) Day-neutral plants (3) Long day plants (4)None of these
49. When flowering is either quantitatively or qualitatively dependent or exposure to low temperature
it is called ____ phenomenon.
(1)Photoperiodism (2)Thermoperiodism (3)Vernalization (4) Dormancy
50. Which of the following are examples of common biennials?
(1) Carrot (2) Cabbages (3)Sugarbeet (4) All
ZOOLOGY
SECTION - A
SECTION - B
PHYSICS
SECTION - B
44. Assertion: Kirchoff’s voltage law works only on the principle of conservation of
potential but not energy.
“Reason: In the loop the voltage supplied does work to move charge across the
resistor“
1. Both Assertion (A) and Reason (R) are true and Reason (R) is a correct
explanation of Assertion (A).
2. Both Assertion (A) and Reason (R) are true but Reason (R) is not a correct
explanation of Assertion (A).
3. Assertion (A) is true and Reason (R) is false.
4. Assertion (A) is false and Reason (R) is true.
45. Which of the following is the correct order of drift velocity at points A,B,C and D
1. A>B>C>D 2. A>B>D>C 3. C>D>B>A 4. None of the above
46. a wire of resistivity of 0.0012 ohm - m is used to made two circles and the middle
wires acting ass diameters in the following figure. if the radius of each circle is
1cm and area off cross section is 0.5 sq mm. then find the resultant resistance of the
combination in the figure:(take nearest value)
1. 100 ohm 2. 200ohm 3. 172 ohm 4. 150 ohm
47. find the current flowing through CD if a potential difference of 10 volts applied
across A and B (higher potential at A)
1. 0.8 ohm 2. 1.6 ohm 3. 3.2 ohm 4. 4.8 ohm

48.
49.

50.
CHEMISTRY
SECTION - B