Plant physiology one liner and answer key

Plant physiology answer key

1.	b	6.	a
2.	a	7.	b
3.	a	8.	c
4.	a	9.	a
5.	c	10.	d

11.	c	16.	a
12.	c	17.	c
13.	a	18.	b
14.	d	19.	a
15.	c	20.	a

21.	b	26.	b
22.	c	27.	a
23.	d	28.	a
24.	a	29.	d
25.	d	30.	c

31.	c	36.	a
32.	a	37.	c
33.	c	38.	c
34.	c	39.	d
35.	b	40.	b

41.	c	46.	c
42.	d	47.	d
43.	a	48.	c
44.	d	49.	b
45.	a	50.	c

Explanations

Answer Key 01-10

01: Stephen Hales is known as father of Plant Physiology.

02: Plasma membrane is a semi permeable membrane.

03: Root hairs are responsible for most of the water absorption.

04: Xylem is responsible for the upward movement of soil nutrients in plants.

05: Pulsation theory was given by J.C. Bose in 1923.

06: Manometer is an instrument for measuring root pressure.

07: Plant cell wall is impermeable in nature.

08: Minerals are translocated in plant as both organic and inorganic compounds.

09: The full form of PAR is Photosynthesis Active Radiation.

10: PAR occurs at 400-700 nm.

Answer Key 11-20

11: Mg or magnesium is the element of chlorophyll.

12: Chlorophyll a and b responsible for photosynthesis in higher plants.

13: The colour of chlorophyll a is blue green.

14: The colour of chlorophyll b is yellow green.

15: Light reaction is also known as C4 or Hill reaction.

16: The Hill reaction takes place in grana of chlorophyll.

17: C3 cycle is also known as dark reaction or Calvin cycle.

18: The dark reaction take place in stroma of chlorophyll.

19: Grana and stroma are present in chloroplast.

20: C3 cycle is also known as Blackman reaction.

Answer Key 21-30

21: 3 PGA is the final product of C3 pathway.

22: The another name of Hatch and slack pathway is C4 cycle.

23: Examples of C3 plants are as follows:

• Rice.
• Wheat.
• Pea.
• Soybean.

24: Oxalo acetic acid is the first product of C4 pathway.

25: Example of C4 plants are as follows:

• Maize.
• Sorghum.
• Sugarcane.
• Millets.

26: PEP carboxylase is the most important enzyme involved in photosynthetic CO2 fixation in C4 plants.

27: Rubisco is the most important enzyme involved in photosynthetic CO2 fixation in C4 plants.

28: C4 plants have Kranz type leaves.

29: Full form of CAM is Crassulacean Acid Metabolism.

30: Examples of CAM plants are as follows:

• Pineapple.
• Opuntia.
• Cacti.

Answer Key 31-40

31: The water use efficiency of CAM plants is higher than C3 plants.

32: The net gain ATP during glycolysis is 2.

33: The net gain ATP synthesis from one molecule of glucose in respiration is 36.

34: Photorespiration occurs during night.

35: Leaf is the principle organ of transpiration which is 90%.

36: The most of stomata mostly present on lower surface of leaves is potato type.

37: The growth rate of plant is measured by auxanometer and crescograph.

38: Auxin is known for apical dominance.

39: Molybdenum is a micronutrient.

40: Full form of PGR is Plant Growth Regulators.

Answer Key 41-50

41: ABA is an example of plant growth inhibitor.

42: Cytokinin is the cause of delayed senescence.

43: GA3 is used to break the dormancy of seeds.

44: Ethylene is fruit ripening hormone.

45: Cytokinin is responsible for cell division.

46: Khaira disease is a physiological disorder of paddy.

47: Spongy tissue is a physiological disorder of mango.

48: Calcium deficiency is the cause of Cat face of tomato.

49: Whiptail belongs to cauliflower (cole crops).

50: Long day plants require 14 hours of day length.