Typha propagates vegetatively with the help of
A. Corm
B. Root
C. Adventitious root
D. Rhizome
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The activities that take place during afterripening include:
A. Transfer of compounds from storage cells to the embryo is reduced
B. Sugar accumulation takes place
C. Digestion of various storage lipids is restricted
D. All of the above
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The main ecological factors operating on the alpine vegetation include
A. Action of cold wind which has dry action
B. High temperature which sometimes reaches above 40° C
C. Difference between direct and indirect sunlight which is less than that of plains
D. Both A and C
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The process through which excess of light energy is dissipated in photosynthesis is known as
A. scavenging
B. photolysis
C. photophosphorylation
D. quenching
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The wheat plants with infected ears, which emerge out of the boot leaves earlier than the healthy ones, may be uprooted at once and burnt. Tnis practice is called
A. Grain dressing
B. Crop rotation
C. Rogueing
D. None of the above
Select an option to see the answer and solution.
Match
List-I with
List-II and select the correct answer:
List-I
List-II
a. Chlorophyll- a
1. C55 H74 O6 N4 Mg
b. Chlorophyll - b
2. C55 H70 O6 N4 Mg
c. Chlorophyll - d
3. C55 G72 O5 N4 Mg
d. Bacteriochlorophyll
4. C54 H70 O6 N4 Mg
A. a-2, b-1, c-4, d-3
B. a-3, b-2, c-1, d-4
C. a-1, b-2, c-3, d-4
D. a-3, b-2, c-4, d-1
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Progamic fertilization usually takes place in
A. Circinotropous ovule
B. Anatropous ovule
C. Campylotropous ovule
D. Orthotropous ovule
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Identify parasite in the following.
A. Pitcher plant
B. Cuscuta
C. Bladderwort
D. Sunflower
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If a smaller dosage of gibberellin is applied to a plant, it
A. Will both bolt and flower
B. Will flower but not bolt
C. Will bolt but not flower
D. Will neither bolt nor flower
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All the progeny obtained from a single plant by vegetative propagation are called
A. clones
B. pure line
C. inbreed line
D. pedigree line
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Which of the following appear to be prerequisites for a response to cold treatment by henbane plant?
A. An age of 5 days and the rosette stage
B. An age of 10 days and the vegetative stage
C. An age of 10 days and the rosette stage
D. The seed stage
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Which of the following ripens into a fruit?
A. Ovule
B. Ovary
C. Nucellus
D. Seed
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The pseudobulbs in orchids are meant for
A. Mechanical support
B. Conducting water and minerals
C. Storing water
D. Receiving nitrogen from air
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Which one of the following gas comes out during photosynthesis?
A. Oxygen
B. Carbon dioxide
C. Hydrogen
D. Chlorine
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The maximum temperature which is favourable for the appearance of late blight of potato is
A. 25° C
B. 25° - 30° C
C. 24° - 26° C
D. 22° - 23° C
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The breakdown of glucose to pyruvic acid is called
A. Glycogenesis
B. Glycolysis
C. Glycogenolysis
D. Glucogenosis
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Complex I of the respiratory chain consists of
A. NADH dehydrogenase and 6 non-heme iron proteins with iron-sulphur centres
B. FAD dehydrogenase and NADH dehydrogenase
C. FAD dehydrogenase and 6 non-heme iron proteins with iron-sulphur centres
D. Coenzyme Q and ubiquinone
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The establishment, development, care and reproduction of forest trees is known as
A. Horticulture
B. Sericulture
C. Silviculture
D. Agriculture
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Crop logging' is a method of
A. soil fertility evaluation
B. plant analysis for assessing the requirements of nutrients for crop production
C. assessing of crop damage
D. testing suitability of fertilisers
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The type of water movement where living protoplasm is involved is called as
A. Apoplast
B. Symplast
C. Epiplast
D. None of the above
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