Which of the following groups of structures/organs have similar function?
antennae of cockroach tympanum of frog and citellum of earthworm
incisors of rat, gizzard(proventriculus) of cockroach and tube feet of starfish
typhlosole in earthworm, intestinal villi in rat and contractile vacuole in Amoeba.
nephridia in earthworm, malpighian tubules in the cockroach and urinary tubules in rat
Excretory organ in prawn is
nephridia
coxal gland
green gland
malpighian tubules
Mouth parts of mosquitoes are of which of the following type?
sponging type
piercing and sucking type
biting and chewing type
chewing and lopping type
Tube feet are the characteristic structures of
jellyfish
cuttlefish
starfish
crayfish
If you are given an insect, a spider a peripatus and a crab, based on which character you can identify an arachnid from others?
sense organ
number of wings
one pair of legs
four pairs of legs
Which of the following feature is common to leech, cockroach and scorpion?
antennae
cephalization
ventral nerve cord
Ecdysone is secreted from
insecta
trematoda
nematoda
polychaeta
Starfishes belongs to class
Pisces
cephalopoda
asteroidea
ophiuroidea
Which of the following fish selectively feeds on larva of mosquito?
rohu
Anabus
exocoetus
Gambusia
Mandibles are absent in the mouth parts of
locust
cockroach
bed bug
housefly
