Thyroid deficiency in infant leads to :
hypothyroidism
myxoedema
cretinism
thyrotoxicosis
C.
cretinism
Cretinism is caused by the deficiency of thyroid hormone in infants. Myxoedema is caused by the deficiency in adults. Graves disease or exophthalmic goitre is caused by the hypersecretion of thyroid hormone.
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
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