Which of the following feature is common to leech, cockroach and scorpion?
antennae
nephridia
cephalization
ventral nerve cord
Larva of housefly lacks
eyes
wings
spiracles
hind legs
Ephyra larva of Aurelia bears
10 arms
8 arms
6 arms
4 arms
Mouth parts of housefly are
biting and sucking type
biting and chewing type
piercing and sucking type
sponging and sucking type
In the life cycle of mosquito, comma shaped stage is
larval stage
pupal stage
image stage
none of these
The difference between male and female cockroach is
in male analcerci are present
in female analcerci are present
in male anal styles are present
in female anal styles are present
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
Which of the following is an insect?
prawn
scorpion
leech
moth
Starfish belongs to the phylum
pisces
mollusca
arthropoda
echinodermata
Butterflies belong to the order
diptera
lepidopetra
hymenoptera
coleoptera
