Quiz about PLANT-PHYSIOLOGY IN GENERAL AWARENESS

Question 1

[A] Sigmoid growth curve consists of four parts [R] Lag phase is called as grand phase of growthA. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false

Accepted Answer

NA

Question 2

[A] Some plants flower only in summers & some only in winters. [R] Such plants require specific photoperi- ods tor flowering.A. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false

Accepted Answer

NA

Question 3

[A] Long distance flow of photoassimilates in plants occur through sieve tubes. [R] Mature sieve tubes have parietal cyto- plasm & perforated sieve platesA. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false

Accepted Answer

NA

Question 4

[A] Fundamental factor in the vernalization is low temperature. [R] Vernalization is ineffective in the absence of oxygen water and adequate supplies of carbohydrates for respiratory processes.A. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false

Accepted Answer

NA

Question 5

[A] Rate of transpiration is high in low wind velocity. [R] Wind removes humid air from around the leaf due to which transpiration is high.A. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false

Accepted Answer

NA

Question 6

[A] Plants hormones are called phytohor- mones [R] They increase rate of reaction & acceler- ate growth.A. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false

Accepted Answer

NA

Question 7

[A] The endogenous level of plant hormones is measured by Bioassay technique. [R] The concentration ot hormones in plants is so low that is not possible to chemically Estimate the level.A. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false

Accepted Answer

NA

Question 8

[A] Light is very important external factor of transpiration. [R] Light induces stomata! opening and darkness stomata! closure. Thus the rate of transpiration increases in light and de- creases in dark.A. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false

Accepted Answer

NA

Question 9

[A] High pH in guard cells activate phospho- rylase to convert starch into glucose 1-`PO_4` . [R] Stomata open when pH is lowA. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false

Accepted Answer

NA

Question 10

[A] Action spectra for photosynthesis help to identify the pigments involved. [R] Because these spectron often closely match the absorption spectra of the pig- ments that take part in photosynthesisA. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false

Accepted Answer

NA

Question 11

[A] Water & mineral uptake by root hairs from soil occur through apoplast until it reaches endodermis [R] Carparian strips is endodermis asre su~erisedA. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false

Accepted Answer

NA

Question 12

[A] Sulphur stabilizes protein structure. [R] It does not participate in metabolic pro- cessesA. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false

Accepted Answer

NA

Question 13

[A] The movement of ions from endodermis to xylem elements is an active process. [R] It requires the involvement of metabolic _ energy that comes from respiration.A. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false

Accepted Answer

NA

Question 14

[A] RingingGirdling experiments involved removal of all tissues outside endodermis from a woody stem. [R] The upper & lower part of the plant is at- tached by central xylem & phloem.A. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false

Accepted Answer

NA

Question 15

[A] The water is absorbed by the root and moves into the stem. [R] From root hair cell water directly moves to xylem cellsA. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false

Accepted Answer

NA

Question 16

[A] The water molecules are held together from cells of leaf to root because of cohesive force. [R] Water does not ascend in ttJ_e tissue due to_ transpiration pull.A. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false

Accepted Answer

NA

Question 17

[A] Xylem transports sap from root to shoot. [R] Phloem translocates food.A. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false

Accepted Answer

NA

Question 18

[A] Phloem is the main conducting tissue. [R] Phloem does the· function of conduction of water.A. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false

Accepted Answer

NA

Question 19

[A] Plants growing under trees show less photosynthesis. [R] Green light is least effective in photosyn- thesis.A. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false

Accepted Answer

NA

Question 20

[A] The energy capturing part of photosyn- thesis occurs in thylakoid membranes and can not proceed without solar energy. [R] The synthesis part of photosynthesis oc- curs in the stroma and does not require direct light energy.A. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false

Accepted Answer

NA

Question 21

[A] Calcium _defficiency symptoms first ap- pear in the apical region. [R] Calcium is highly mobile in plants.A. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false

Accepted Answer

NA

Question 22

[A] Auxillary buds in actively growing herba- ceous plants generally remain dormant. [R] This is due to apical dominance which is under the influence of auxinsA. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false

Accepted Answer

NA

Question 23

[A] `C_4` pathway is more efficient that n `C_3` pathway. [R] Photorespiration is suppressed in `C_4` plantsA. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false

Accepted Answer

NA

Question 24

[A] `C_4` Photosynthetic pathway is more effi- cient than the `C_3` pathway [F] Photorespiration is suppressed in `C_4` plants.A. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false

Accepted Answer

NA

Question 25

[A] Daily periodicity of stomata! movement is not the characteristic of succulent plants. [R] In succulent plants stomata are closed at night and open during the day.A. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false

Accepted Answer

NA

Question 26

[A] Tropical movements occuring in re- sponse to water stimulus are called Haptotropism. [R] Haptotropic movement occurs in re- sponse to vibrationsA. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false

Accepted Answer

NA

Question 27

[A] Bolting of rosette plants is caused by Gib- berellins. [R] Gibbarellins induce subaplcal meristem to develop tasterA. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false

Accepted Answer

NA

Question 28

[A] Phytotron is a device by which photolysis of water is created. [R] Phytotron is a method of keeping plants in natural light and temperature in housesA. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false

Accepted Answer

NA

Question 29

[A] Gibberellic acid when added to isolated aleurone induce amylase activity [R] The enzyme amylase converts insoluble starch into soluble sugarsA. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false

Accepted Answer

NA

Question 30

[A] Plasmolysis is seen by both living and dead cells. [R] Both types of cell are impermeableA. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false

Accepted Answer

NA

Question 31

[A] Wilting occurs due to loss in turgidity. [R] Turgor pressure checks the excessive entry of water into cells.A. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false

Accepted Answer

NA

Question 32

[A] The evolution of molecular oxygen is con- cerned with photosystem-1 (PS-I). [R] The photosystem-11 (PS-II) is not involved in the evolution of oxygenA. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false

Accepted Answer

NA

Question 33

[A] The evolution of molecular oxygen is con- cerned with photosystem-1 (PSI). [R] The photosystem-11 (PS-II) is not involved in the evolution of oxygen.A. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false

Accepted Answer

NA

Question 34

[A] Senescence is induced by the applica- tion of cytokinin in plants. [R] Cytokinin promotes the breakdown of chlorophyll proteins and nucleic acid.A. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false

Accepted Answer

NA

Question 35

[A] Senescence effect can be reversed by cytokinin. [R] The los!5 of liquid from leaves of intact plant is termed as guttation.A. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false

Accepted Answer

NA

Question 36

(A] Cytokinins help in retention of cholorophyll and delayed senescence in leaves. [R] Cytokinins only stimulate root initiationA. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false

Accepted Answer

NA

Question 37

[A] The germination of lettuce seeds is stimulated by red light and inhibited by infra- red light. [R] Red light converts prto active pfr formA. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false

Accepted Answer

NA

Question 38

[A] If you burn a plant its nitrogen compo- nent is given off as ammonia and other gases. [R] Hydroponics does not allow plants to grow well if they are supplied with all the min- eral nutrients they needA. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false

Accepted Answer

NA

Question 39

[A] The nitrogen content of the plant cannot be detected accurately by ash analysis. [R] On burning of plant nitrogen component is given off as `NH_3` & other gasesA. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false

Accepted Answer

NA

Question 40

[A] The nodulated bacteria fix nitrogen in the presence of leg Hb. [R] Leg Hb acts as oxygen scavangerA. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false

Accepted Answer

NA

Question 41

[A] Gibberellic acid when added to isolated aleurone layer induces alfa-amylase activity. It acts at gene level. [R] GA may act at the gene level or just acti- vates the inactive enzyme or interact to re- move enzyme inhibitor.A. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false

Accepted Answer

NA

Question 42

[A] Submerged plants get `CO_2` in-the form of `CO_3^(-) & HCO_3^(-3)` [R] Stomata are absent in submerged plantsA. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false

Accepted Answer

NA

Explore topic-wise InterviewSolutions in Current Affairs.

[A]: Sigmoid growth curve consists of four parts [R]: Lag phase is called as grand phase of growthA. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false

[A]: Plants hormones are called phytohor- mones [R]: They increase rate of reaction & acceler- ate growth.A. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false

[A]: Sulphur stabilizes protein structure. [R]: It does not participate in metabolic pro- cessesA. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false

[A]: Xylem transports sap from root to shoot. [R]: Phloem translocates food.A. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false

[A]: Phloem is the main conducting tissue. [R]: Phloem does the· function of conduction of water.A. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false

[A]: Plasmolysis is seen by both living and dead cells. [R]: Both types of cell are impermeableA. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false

[A]: The nodulated bacteria fix nitrogen in the presence of leg Hb. [R]: Leg Hb acts as oxygen scavangerA. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false

1.	[A]: Sigmoid growth curve consists of four parts [R]: Lag phase is called as grand phase of growthA. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false
Answer» Correct Answer - C

2.	[A] : Some plants flower only in summers & some only in winters. [R]: Such plants require specific photoperi- ods tor flowering.A. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false
Answer» Correct Answer - A

3.	[A]: Long distance flow of photoassimilates in plants occur through sieve tubes. [R]: Mature sieve tubes have parietal cyto- plasm & perforated sieve platesA. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false
Answer» Correct Answer - A

4.	[A]: Fundamental factor in the vernalization is low temperature. [R]: Vernalization is ineffective in the absence of oxygen, water and adequate supplies of carbohydrates for respiratory processes.A. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false
Answer» Correct Answer - B

5.	[A]: Rate of transpiration is high in low wind velocity. [R]: Wind removes humid air from around the leaf due to which transpiration is high.A. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false
Answer» Correct Answer - B

7.	[A]: The endogenous level of plant hormones is measured by Bioassay technique. [R]: The concentration ot hormones in plants is so low that is not possible to chemically Estimate the level.A. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false
Answer» Correct Answer - A

8.	[A]: Light is very important external factor of transpiration. [R]: Light induces stomata! opening and darkness stomata! closure. Thus the rate of transpiration increases in light and de- creases in dark.A. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false
Answer» Correct Answer - A

9.	[A]: High pH in guard cells activate phospho- rylase to convert starch into glucose 1-`PO_4` . [R]: Stomata open when pH is lowA. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false
Answer» Correct Answer - D

10.	[A]: Action spectra for photosynthesis help to identify the pigments involved. [R]: Because these spectron often closely match the absorption spectra of the pig- ments that take part in photosynthesisA. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false
Answer» Correct Answer - A

11.	[A]: Water & mineral uptake by root hairs from soil occur through apoplast until it reaches endodermis [R]: Carparian strips is endodermis asre su~erisedA. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false
Answer» Correct Answer - A

13.	[A]: The movement of ions from endodermis to xylem elements is an active process. [R]: It requires the involvement of metabolic _ energy that comes from respiration.A. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false
Answer» Correct Answer - A

14.	[A]: Ringing/Girdling experiments involved removal of all tissues outside endodermis from a woody stem. [R]: The upper & lower part of the plant is at- tached by central xylem & phloem.A. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false
Answer» Correct Answer - D

15.	[A]: The water is absorbed by the root and moves into the stem. [R]: From root hair cell, water directly moves to xylem cellsA. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false
Answer» Correct Answer - C

16.	[A]: The water molecules are held together from cells of leaf to root because of cohesive force. [R]: Water does not ascend in ttJ_e tissue due to_ transpiration pull.A. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false
Answer» Correct Answer - C

19.	[A]: Plants growing under trees show less photosynthesis. [R]: Green light is least effective in photosyn- thesis.A. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false
Answer» Correct Answer - A

20.	[A]: The energy capturing part of photosyn- thesis occurs in thylakoid membranes and can not proceed without solar energy. [R]: The synthesis part of photosynthesis oc- curs in the stroma and does not require direct light energy.A. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false
Answer» Correct Answer - B

21.	[A]: Calcium _defficiency symptoms first ap- pear in the apical region. [R]: Calcium is highly mobile in plants.A. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false
Answer» Correct Answer - B

22.	[A]: Auxillary buds, in actively growing herba- ceous plants generally, remain dormant. [R]: This is due to apical dominance which is under the influence of auxinsA. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false
Answer» Correct Answer - A

23.	[A]: `C_4` pathway is more efficient that n `C_3` pathway. [R]: Photorespiration is suppressed in `C_4` plantsA. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false
Answer» Correct Answer - A

24.	[A]: `C_4` Photosynthetic pathway is more effi- cient than the `C_3` pathway [F]: Photorespiration is suppressed in `C_4` plants.A. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false
Answer» Correct Answer - A

25.	[A]: Daily periodicity of stomata! movement is not the characteristic of succulent plants. [R]: In succulent plants stomata are closed at night and open during the day.A. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false
Answer» Correct Answer - D

26.	[A]: Tropical movements occuring in re- sponse to water stimulus are called Haptotropism. [R]: Haptotropic movement occurs in re- sponse to vibrationsA. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false
Answer» Correct Answer - D

27.	[A] : Bolting of rosette plants is caused by Gib- berellins. [R]: Gibbarellins induce subaplcal meristem to develop tasterA. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false
Answer» Correct Answer - C

28.	[A]: Phytotron is a device by which photolysis of water is created. [R]: Phytotron is a method of keeping plants in natural light and temperature in housesA. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false
Answer» Correct Answer - D

29.	[A] : Gibberellic acid , when added to isolated aleurone , induce amylase activity [R] : The enzyme amylase converts insoluble starch into soluble sugarsA. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false
Answer» Correct Answer - B

31.	[A]: Wilting occurs due to loss in turgidity. [R]: Turgor pressure checks the excessive entry of water into cells.A. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false
Answer» Correct Answer - B

32.	[A]: The evolution of molecular oxygen is con- cerned with photosystem-1 (PS-I). [R]: The photosystem-11 (PS-II) is not involved in the evolution of oxygenA. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false
Answer» Correct Answer - D

34.	[A]: Senescence is induced by the applica- tion of cytokinin in plants. [R]: Cytokinin promotes the breakdown of chlorophyll, proteins and nucleic acid.A. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false
Answer» Correct Answer - D

35.	[A]: Senescence effect can be reversed by cytokinin. [R]: The los!5 of liquid from leaves of intact plant is termed as guttation.A. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false
Answer» Correct Answer - B

36.	(A]: Cytokinins help in retention of cholorophyll and delayed senescence in leaves. [R]: Cytokinins only stimulate root initiationA. If both A and R are true and R is the correct explanation of AB. If both A and R are true but R is not the correct explanation of AC. If A is true and R is falseD. If both A and R are false
Answer» Correct Answer - C