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801.

During seed germination, its stored food is mobilised byA. CytokininB. ABAC. GibberellinsD. Ethylene

Answer» Correct Answer - C
802.

During seed germination, its stored food is mobilised byA. CytokininsB. ABAC. gibberellinD. ethylene

Answer» Correct Answer - C
803.

Vemalisation is A. Growth curve related to light B. Effect of photoperiods on plant growth C. Speeding up ability to flower by low temperature treatment D. Diurnal photoperiodicity

Answer» Correct Answer - C
Vernalisation is speeding up ability to flower by low temperature treatment
804.

A few normal seedlingd of tomato were kept in a dark room. After a few days were found to have become white coloured like albinos. Ehich of the following terms will you use to describe themA. EtiolatedB. DefoliatedC. MutatedD. Embolised

Answer» Correct Answer - a
(a) Etiolation is depigmentation in leaf when plant is placed in dark for more than 36 hrs. Plants get etiolated dark, because chlorophyll is not synthesizwd darkness.
805.

A few normal seedlingd of tomato were kept in a dark room. After a few days were found to have become white coloured like albinos. Ehich of the following terms will you use to describe themA. DefoliatedB. MutatedC. EmbolisedD. Etiolated

Answer» Correct Answer - D
806.

A few normal seedlingd of tomato were kept in a dark room. After a few days were found to have become white coloured like albinos. Ehich of the following terms will you use to describe themA. MutatedB. EmbolisedC. EtiolatedD. Defoliated

Answer» Correct Answer - C
Etiolation is a process in which flowering plants are grown in partial or complete absence of light. Etiolation is mainly characterized by long and weak stem and smaller, sparse pale yellow colour of leaves due to the longer internodes. Thus due to th1s tomato seeding became white coloured
807.

The phyohormone which induces triple respone isA. IAA B. ABA C. GAD. 02H

Answer» Correct Answer - D
Phytohormone which induces triple response is `C_(2)H_(4)`
808.

Ethylene is metabolic product ofA. ValineB. Serine C. Methionine D. Glutamic acid

Answer» Correct Answer - C
Ethylene is metabolic product of methionine.
809.

An example of short day plant isA. Maize B. Radish C. Chrysanthemum D. Wheat

Answer» Correct Answer - C
An example of short day plant is Chrysanthemum .
810.

6- furfuryl ammino purine 2, 4- dichorophenoxy acetic acid and indole -3 - acetic acid are examples respectively forA. Synthetic auxin, kinetin and natural auxin B.  Gibberellin, natural auxin and kinetin C. Natural auxin, kinetin and synthetic auxin D. Kinetin, synthetic auxin and natural auxin

Answer» Correct Answer - D
6-furfuryl amino purine, 2, 4-dichlorophenoxy acetic acid and indole 3-acetic acid are kinetin, synthetic auxin and natural auxin respectively.
811.

Synthetic plant hormone isA. IAA B. 2,4-D/NAA C. GA D. Zeatin

Answer» Correct Answer - B
Synthetic plant hormone is 2, 4-D and NAA.
812.

Which of the following movements is not related to change in auxin levelsA. nyctinastic leaf movementB. Movement of roots towards soilC. Movement of sunflower traking the direction of the sunD. Movement of shoot towards light

Answer» Correct Answer - a
813.

The pineapple which under natural conditions is diffcuit to blossom has been made to produce friuts throghout the year by application ofA. NAA,2, 4-dB. phenyl acetic acidC. CytokininD. IAA,IBA

Answer» Correct Answer - a
814.

To induce formation of organs in a callus it os necessary to provideA. Growth hormonesB. waterC. SoilD. Antibiotics

Answer» Correct Answer - a
815.

Monocarpic plants are those whichA. bear flowers with one ovaryB. flower once and dieC. bear only one flowerD. all of the above

Answer» Correct Answer - b
816.

The photoperiod in plants is perceived atA. MeritismB. FlowerC. Floral budsD. Leves

Answer» Correct Answer - d
817.

The photoperiod in plants is perceived atA. MeristemB. FlowerC. Floral budsD. Leaves

Answer» Correct Answer - D
818.

During cell enlargement phase of growth, molecules of new cell wall material are inserted between the original molecules of stretched wall. This process is known asA. IntussusceptionB. AppositionC. IntegrationD. None of these

Answer» Correct Answer - a
(a) During enlargement phase of growth new particles of the old wall, is known as intussusception
819.

Increased vacuolation, cell enlargement and new cell wall deposition are the characteristics of cells in_____phase of growth.A. Meristematic phaseB. Phase of elongation C. Phase of maturation D. Both B and C

Answer» Correct Answer - B
Increased vaculoation, cell enlargement and new cell wall deposition are the characteristics of cell in phase of elongation.
820.

Deposition of new materials inside the cell wall of cells starts inA. Meristematic phaseB. Reproductive phaseC. Maturation phaseD. Elongation phase

Answer» Correct Answer - D
821.

The given diagram shows different stages of seed germination. Identify A,B,C and D and select the correct option. A. `{:(A,B,C,D),("Plumule","Cotyledons","Epicotyl","Hypocotyl"):}`B. `{:(A,B,C,D),("Radicle","Cotyledons","Epicotyl","Hypocotyl"):}`C. `{:(A,B,C,D),("Mesocotyl","Cotyledons","Epicotyl","Hypocotyl"):}`D. `{:(A,B,C,D),("Root hair","Cotyledons","Hypocotyl","Epicotyl"):}`

Answer» Correct Answer - B
822.

The given figure indicates the stages of seed gremination Identify A,B,C and D respectiveltyA. Root hair ,Cotyedons ,Epicotyl and HyocotylB. Mesocotyl ,Cotyedons ,Epicotyl and HyocotylC. Radicle ,Cotyedons ,Epicotyl and HyocotylD. Plumule ,Cotyedons ,Epicotyl and Hyocotyl

Answer» Correct Answer - c