A. Photosynthesis
B. Aeration
C. Nitrogen fixation
D. Respiration
Related Mcqs:
- Root nodules in plants help in___________________?
A. Photosynthesis
B. aeration
C. Nitrogen fixation
D. Respiration - The root of cotton plant goes up to depth of_________________?
A. 2-3 ft
B. 4-6 ft
C. 8-10 ft
D. non of these - The harmful influence of one living plant on another living plant by the secretion of a toxic substance is called________________?
A. Allergy
B. Allelopathy
C. Parasitism
D. Antagorusm - England cotton was imported from the time in__________________?
A. 1430 AD
B. 1435 AD
C. 1530 AD
D. 1500 AD - Gassypium barbadense was originated in__________________?
A. Central and North America
B. Central and South America
C. Central and South Asia
D. North Mexico and North America - Mesophytes are grown in__________________?
A. Dry condition
B. Moist places
C. Desert area
D. None of the above - Root rot of cotton is a_________________?
A. Bacterial disease
B. Viral disease
C. Fungal disease - Annual rye grass releases a chemical through its root that prevents________________?
A. Crop seeds
B. weed seed
C. Both a and b
D. non of these - Causal organism of root rot of cotton is_____________________?
A. Rhizoeionia solani
B. Rhizoctonia bataticola
C. Both of them - Part of embryonic axis which develops into root is called___________________?
A. Plumule
B. Radicle
C. Coleoptile
D. Coleorluza
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