The only promoter of leaf senescence in the following plant hormones is________________?
(A) Gibberellins
(B) Cytokinins
(C) Auxins
(D) Abscisic Acid
Abscisic acid promotes flowering in short day plants and inhibits in long day plants, which of the following is antagonistic to abscisic acid in terms of flowering______________?
(A) Gibberellins
(B) Cytokinins
(C) Auxins
(D) Ethen
Which of the following is antagonist to Auxin in terms of promotion of stem growth______________?
(A) Gibberellins
(B) Cytokinins
(C) Abscisic Acid
(D) none of thes
Gibberellins may be substituted for ___________ light, therefore promote flowering in long day plants?
(A) White
(B) Red
(C) Blue
(D) Green
Chemically auxins are____________?
(A) Indole propionic acid.
(B) Indole carboxylic acid.
(C) Indole acetaldehyde
(D) Indole acetic acid.
Cell membrane under resting conditions is impermeable to all the ions except_____________?
(A) Na+
(B) K+
(C) Cl-
(D) PO4-2
Maintenance of normal resting potential via movement of K+ inside the cell and na+ out is a/an ___________ process?
(A) Active
(B) Passive
(C) Diffusional
(D) None of thes
Type of neurons found exclusively in CNS are_____________?
(A) Sensory neurons
(B) Motor neurons
(C) Associative neurons
(D) None of these
Which of the following statement about neuron is incorrect___________________?
(A) They not only conduct impulses but also generate them
(B) They are not the only cellular component of nervous system
(C) They may show limited regenerative capabilities
(D) Like all the living cell, when they mature and divide to form similar cells