Which of the following is non-symbiotic nitrogen fixer organism?
VAM
Azotobacter
Anabaena
Rhizobium
The rupture and fractionation do not usually occur in water column in vessel/tracheids during the ascent of sap because of
Lignified thick walls
Cohesion and adhesion
Weak gravitational pull
Transpiration pull
The material, which arrests cell division, is obtained from
Crocus
Colchicum
Dalbergis
Chysanthomum
Viscum album grown on trees. This is an example of
Symbiosis
Parasitism
Commensalism
Predation
B.
Parasitism
Viscum album is a partial stem parasite that grows on poplar, apple, walnut, oats, etc. The parasite sends primary haustorium into the host for deriving food from them.
Which of the following is responsible for biological nitrogen-fixation?
Nife gene
Nitrogenase
Yeast alanin tRNA synthetase
RNA synthetase
The respiratory quotient during cellular respiration would depend on the
Nature of the enzymes involved
Nature of the substrate
Amount of carbon dioxide released
Amount of oxygen utilized
Which of the following supports a dense population of plankton and littoral vegetation?
Oligotrophic
Eutrophic
Lithotrophic
Agroecotrophic
Three floral diagrams are given here. Their respective families are assigned in the answer key. Find out the families to which these diagrams belong to
A-Liliaceae, B-Asteraceae, C-Solanaceae
A-Asteraceae, B-Solanaceae, C-BRassicaceae
A-Asteraceae, B-Solanaceae, C-Asteraceae
A-Poaceae, B-Solanaceae, C-Asteraceae