IBPS AO Quiz-29

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1:-biochemicals which affect other plants activity known as-
(a)bio inhibitors
(b)allelo chemicals
(c)hormones
(d)toxic

2:-White rust is an important fungal disease of -
(a)Rice
(b)Bajra
(c)Mustard
(d)Wheat

3:-Triticum aestivum, the common bread wheat is -
(a)Tetraploid
(b)Diploid
(c)Haploid
(d) Hexaploid

4:-HD 2967 is the new high yielding variety of -
(a)Wheat
(b)Rice
(c)Mustered
(d)Maize

5:-chemical release by rye plant to suppress other plants activities-
(a)benzoxonoids
(b)tabanone
(c)alkaloids
(d)cynamide

6:-legumes save up to --% of recommended nitrogen application to the associated cereals.
(a)25
(b)35
(c)40
(d)15

7:-plant's defence against herbivory also known as-
(a)positive allelopathy
(b)negative allelopathy
(c)accrescent
(d)ecological amplitude

8:-”growing 2 or more crop simultaneously & second crop is planted after the first crop has reached its reproductive stage” is example of-
(a)alley cropping
(b)strip cropping
(c)ratoon cropping
(d)relay cropping

9:-which one is correct regarding to crop rotation ?
(a)tap root crops with fibrous root crop
(b)legumes after non legumes
(c)exhausting crop after less exhausting crop
(d)all above

10:-interaction between intercrops known as-
(a)allelopathy
(b)annidation
(c)inhibition
(d)symbiosis

Answers:-1-b, 2-c, 3-d, 4-a, 5-a, 6-a, 7-b, 8-d, 9-d, 10-b

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