Which of the following organisms have tube feet as the locomotory organ?
starfish
jellyfish
crop fish
silver fish
Spider web is formed by a fluid, which is present in its
cephalothorax
salivary gland
abdominal gland
parathyroid gland
Juvenile hormone in insects is secreted by
corpora allata
corpora cardiaca
corpus callosum
thyroid gland
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
In the life cycle of mosquito, comma shaped stage is
larval stage
pupal stage
image stage
none of these
Which of the following feature is common to leech, cockroach and scorpion?
antennae
nephridia
cephalization
ventral nerve cord
The endocrine gland of insects, which secretes the juvenile hormone, is
corpora myeacena
corpora albicants
corpora cavernosa
Which of the following species of silk worm are found in India?
Bombyx mori
Anthera papia
Anthera roylei
Anthera assama
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
Ecdysone is secreted from
insecta
trematoda
nematoda
polychaeta
