CBSE
Multiple Choice QuestionsWhich of the following assists in the locomotion of the organism stated
Epithelium of' Pheretima
Trichocysts of Paramecium
Pedicellaria of Star fish
Posterior sucker of Hirudinaria
The main excretory organ of prawn is
green gland
flame cell
Malphigian tubule
nephridia
Third cleavage of frog's development is
equatorial
vertical
latitudinal
none of these
The scientist, who described the birds as glorified reptiles, was
Romer
Huxley
Mendel
Robert Hooke
A definite number of segments are found in
slug
earthworm
leech
tapeworm
Which cells are found only in sponges?
Amoeboid cells
Choanocytes
Pigment cells
Gland cells
Which of the following is not an insect?
Locust
Lepisma
Termites
Spider
What is left when bath sponges dries up
Spicules
Spongin fibres
Tentacles
Holdfast
In frog, the vertebra with an anterior convex surface (i.e., double convexties) is
atlas
urostyle
8th vertebra
9th vertebra
The red colour of 'red sea' is due to which of the following blue-green algae?
Chlamydomonas nivalis
Anabaena
Microcystis
Trichodesmium
