The function of pineal body is to :
lighten the skin colours
control sexual behaviour
regulates the period of puberty
all of the above
Which of the following part of a neuron is covered by fatty sheath ?
axon
cyton
dendrite
node of Ranvier
A fruit developed from a condensed inflorescence is :
simple fruit
aggregate fruit
composite fruit
etaerio
The stage of cell cycle when cell has undergone differentiation is :
G0
G1
G3
G4
A.
G0
G0 is the phase which undergoes differentiation. It is also known as quiscent phase.
Photosynthetic bacteria have :
pigment system I (only one pigment system)
pigment system II
both (a) and (b)
some other type
Active transport occurs :
against concentration gradient and requires ATP
against concentration gradient and does not require ATP
along concentration gradient but require ATP
along concentration gradient but does not require ATP