What is the direction of movement of sugars in phloem?
the phloem supplies the food to aerial and different parts of the plant body in ncert terms it supplies from source to sink nd source and sink are changed acc to plant needs so sink can be one time upwards of direction and another time downwards direction of plant so the phloem is bi directional
Water and mineral only
Water, mineral salts and some organnic nitrogen only
Water, minerals salts and some organic nitrogen and hormones
xylem translocates all except organic nitrogen because nitrogen is utilised by plants in mycorhizal association so nitrogen is not transported
Grass leaves curl inwards during very dry weather. Select the most appropriate reason for the following:
Closure of stomata
Flaccidity of bulliform cells
Shrinkage of aire spaces in spongy mesophyll
Tyloses in vessels
Thiobacillus is a group of bacteria helpful in carrying out:
Respiratory Quotient(RQ) value of tripalnitin is:
It takes very long time for pineapple plants to flower. Which combination of hormones can be applied to artificially induce flowering in pineapple plants through out the year to increase the yields?
Auxin and Ethyelene
Gibberellin and Cytokinin
Gibberellin and Abscisic acid
Cytokinnin and Abscisic acid
What is the site of perception of photoperiod necessary for the induction of flowering in plants?
Convesion of glucose to glucose - 6 - phosphate, the first irrevesible reaction of glycolysis, is catalysed by:
The answer to this question is hexokinase.