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
Mauritius
Australia
New Zealand
Indonesia
What is common among silverfish, scorpion, crab and honey bee?
Compound eyes
Poison gland
Jointed legs
Metamorphosis
The long bones are hollow and connected by air passages are characteristics of
Mammals
Reptilia
Aves
All land vertebrates
Most appropriate term to describe the life-cycle of Obelia is
Metagenesis
Metamorphosis
Alternation of generations
Neoteny
In desert grasslands which type of animals are relatively more abundant?
Arboreal
Aquatic
Fussorial
Diurnal
Cell –tissue body organization is characteristic of
Star fish
Hydra
Liver fluke
Sponge
What is common between Ascaris lumbricoides and Anopheles stephensi?
Sexual dimorphism
Hibernation
Anaerobic respiration
Metamerism
Which fish selectively feed on larvae of mosquito?
Gambusia
Rohu
Clarias
Exocoetus
In which of the following animal post anal tail is found?
Earthworm
Lower invertebrate
Scorpion
Cobra
In which of the following, haemocyanin pigment is found?
Mollusca
Annelida
Echinodermata
Lower chordata
Cause of mimicry is
concealment
attack (offence)
protection (defence)
both (2) and (3)
In which of the followings notochord is present in embryonic stage?
All chordates
Some chordates
Vertebrates
Non chordates
In which of the animals dimorphic nucleus is found?
Amoeba proteus
Trypanosoma gambiense
Plasmodium vivax
Paramecium caudatum
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