Aristotle’s Lantern occurs in—
(A) Asteroidea
(B) Echinoidea
(C) Holothuroidea
(D) Crinoidea
Answer:
Neoteny is observed in—
(A) Ambystoma
(B) Alytes
(C) Sycon
(D) Sacculina
Answer:
Kidneys are vital organs of the body because they help in—
(A) Regulation of body fluids
(B) Regulation of acidbase balance
(C) Removal of metabolic wastes
(D) All of these functions
Answer:
The infective stage of malarial parasite is—
(A) Trophozoite
(B) Merozoite
(C) Sporozoite
(D) Cyst
Answer:
Parasitic castration occurs in—
(A) Fasciola
(B) Nereis
(C) Sacculina
(D) Palaemon
Answer:
The drug useful to increase cardiovascular effects in human beings is :
(A) Cocaine
(B) Barbiturate
(C) Benzodiazetine
(D) Insulin
Answer:
In echolocation, the animal that produces high frequency sounds is :
(A) Monkey
(B) Butterfly
(C) Squirrel
(D) Bat
Answer:
Two kingdoms constantly figured in all biological classifications are :
(A) Plantae and Animalia
(B) Monera and Animalia
(C) Protista and Animalia
(D) Protista and Plantae
Answer:
The dioecious animal is :
(A) Liverfluke
(B) Hookworm
(C) Tapeworm
(D) Earthworm
Answer:
Comb plates are found in :
(A) Adamsia
(B) Aurelia
(C) Nereis
(D) Pleurobrachia
Answer: