In the wall of alimentary canal, what is the actual sequence from outer to inner
serosa, longitudinal muscle, mucosa, submucosa
mucosa, serosa, long muscle
serosa, long muscle, circular, submucosa, mucosa
serosa, long muscle, submucosa, mucosa
Bile helps in the digestion of fat through
emulsification
alkalinity
forming micelles
All of these
In frog chromosome number is reduced to half
when 2nd polar body is separated
when 2nd polar body is divided
when 3rd polar body is separated
when 1st polar body is separated
Which cells are found only in sponges?
Amoeboid cells
Choanocytes
Pigment cells
Gland cells
B.
Choanocytes
Choanocytes are found only in sponges. The choanocyte is an ovoid cell with free ends bearing a transparent contractile collar. The collar surrounds a single, long flagellum. Choanocytes are used in feeding and for ensuring flow of water within the animal's body.
In photosythesis action and absorption spectrum were related by
Von Helmont
Engelmann
Emerson
Lavosier