Which of the following are Homeotherms?
a) all non-vertebrates
b) fishes
c) amphibians and reptiles
d) birds and mammals
Which of the following are ectotherms that produce metabolic heat at low level?
a) all non-vertebrates
b) fishes
c) amphibians and reptiles
d) all of these
Which of the following are endotherms, that produce their own body heat by metabolism?
a) all non-vertebrates
b) fishes
c) amphibians and reptiles
d) birds and mammals
Erection of hair is termed as……..
a) shivering
b) vasoconstriction
c) piloerection
d) vasodilation
Excretion of hypotonic urine in humans is associated best with the ……
a) glomerular capsule
b) proximal convoluted tubule
c) loop of Henle
d) distal convoluted tubule
The walls of the ……are made more or less permeable to water, depending on the need to conserve water.
a) ureter
b) urethra
c) fibrous capsule
d) collecting duct
