Radial symmetry is usually associated with
aquatic mode of life
lower grade of organization
creeping mode of locomotion
sedentary mode of life
True coelon is the space lying between the alimentary canal and body wall enclosed by the layers of
ectoderm on both sides
endoderm on one side and ectoderm on the other
mesoderm on one side and ectoderm on the other
mesoderm on both sides
What is true about all sponges without exception
They are all marine
They have flagellated collar cells
They have a mixed skeleton consisting of spicules and sponging fibres
They reproduce only asexually by budding
Functionwise, just as there are nephridia in an earthworm, so are
parotid glands in toad
statocysts in prawn
flame cells in liver fluke
myotomes in flash
The flightless bird Cassowary is found in
What is common among silverfish, scorpion, crab and honey bee?
The long bones are hollow and connected by air passages are characteristics of
All land vertebrates
Most appropriate term to describe the life-cycle of Obelia is
Alternation of generations
In desert grasslands which type of animals are relatively more abundant?
Cell –tissue body organization is characteristic of
What is common between Ascaris lumbricoides and Anopheles stephensi?
Which fish selectively feed on larvae of mosquito?
In which of the following animal post anal tail is found?
In which of the following, haemocyanin pigment is found?
Cause of mimicry is
both (2) and (3)
In which of the followings notochord is present in embryonic stage?
In which of the animals dimorphic nucleus is found?
Which one of the following is a matching pair of an animal and a certain phenomenon it exhibits?
Taenia - Polymorphism
Pheretima – Sexual dimorphism
Musca – Complete metamorphosis
Chemeleon - Mimicry