Mammalian prolactin is secreted by :
adenohypophysis
neurohypophysis
adrenal cortex
adrenal medulla
Which of the following is not found in Hydra ?
Epithelio-muscular cells
Cnidocyte
Choanocyte
Nerve cells
Which of the following structure in Pheretima posthuma plays the role of the liver of vertebrates ?
Calciferous glands
Gland cells
Chloragogen cells
Cliteller cells
C.
Chloragogen cells
Chloragogen cells of Pheretima posthuma are analogous to liver of vertebrates. They are said to be excretory. They may also store the reserve food material and manufacture glycogen from fatty acids.
Glomerular filtrate is
blood minus blood corpuscles and plasma protein
blood minus corpuscles
mixture of water, ammonia and corpuscles
urine
A condition in which body's internal environment remains relatively constant within limits is called :
homeostasis
hemostasis
hematoma
haemopoiesis
Which of the following symmetry is found in adult sea-anemone ?
Radial
Biradial
Bilateral
Spherical
The parasphenoid bone in frog forms :
base of cranium
floor of cranium
dorsal side of cranium
dorsolateral side of cranium