The type of symmetry best suited to non-motile organisms is
radial symmetry
bilateral symmetry
asymmetry
both (a) and (b)
Correct Answer :
A. radial symmetry
Related Questions
'Systema Naturae' was written by
Carolus Linnaeus
Charles Darwin
Lamarck
Wallace
Which of the following is not an enterocoelic phylum ?
Chordata
Mollusca
Coelentrata
Porifera
Which of the following is a species ?
Mammalia
Carnivora
Canidae
Catiisfamilaris
The concept of homology can be applied to
gross structures of the body
physiological mechanisms
biochemical similarities
all of these
One of the primary characters of chlor-date is
solid ventral nerve cord
dorsal tubular nerve cord
paired nerve cords
ganglionated nerve cord
A definite number of body segments is found in
leech
tapeworm
earthworm
slug
Which of the protozoan is considered as connecting link between animals and plants ?
Entamoeba
Paramecium
Euglena
Monocystis
Which of the following belongs to Mollusca ?
Starfish
Dogfish
Silver fish
Goldfish
The correct phylogenetic sequence in taxonomy is
Pisces, Amphibia, Reptilia, Mammalia
Pisces, Reptilia, Amphibia, Mammalia
Amphibia, Pisces, Reptilia, Mammalia
Amphibia, Reptilia, Pisces, Mammalia
Metamerism is a characteristic feature of
porifera
mollusca
annalida
platyhelminthes
Pharyngeal gill slits are found in
flying fish
silver fish
crayfish
cuttlefish
Which of the following is not correctly matched ?
Flame CellsPlatyhelminthes
Metametric segmentationMollusca
Gill-slitChordata
Stininging cellsCoelenterata
In the course of evolution, the true coelom appeared first in
aschelminthes
annelida
arthropoda
echinodermata
National mammal of India is
cow
peacock
lion
tiger
These species inhabiting different geographical areas are
allopatric
sibling species
morphospecies
sympatric
Largest animals belong to class
arthropoda
pisces
mammalia
reptilia
Which of the following is not a diploblas-tic group ?
Porifera
Coelentrata
Annelida
Platyhelminthes
Which of the following has a diaphragm between the thorax and abdomen
Frog
Lizard
Pigeon
Whale
Animals belonging to order Rodentia have
long incisors
long canines
short canines
short incisors
Antedon belongs to class
echinodermata
ophiuroidea
crinoidea
echinoidea
True coelom appeared first in the course of evolution in
Echinodermata
Annelida
Chordata
Aschelminthes
Histological differentiation is absent in
Amoeba
Hydra
Earthworm
Cockroach
Character common in spider, cockroach and centipede is
compound eyes
joint legs
book lungs
green glands
According to Aristotle's classification, animals were divided into
Protozoa and Metazoa
Invertebrata and Vertebrata
Chordata and Non-chordata
Anaima and Enaima
Which one is an unmatching pair ?
Lamprey-Agnatha
Shark-Chond rich thyes
Turtle-Amphibia
Lizard-Reptilia
Aside from a three chambered heart, reptiles are characterised by the presence of
limb girdles
dermal scales
lungs
dorsal nerve cord
Sepia is also known as
star fish
cartilagenous fish
jellyfish
cuttlefish
Which of the following is a correct hierar-chial sequence in systematics ?
Species, genus, family, order, class, phylum
Species, genus, order, family, class, phylum
genus, species, order, family, class, phylum
genus, family, order, class, species, phylum
The larval forms called bladder worms are characteristic of
intestinal parasites
earthworms
roundworms
tapeworms
Ornithorhynchus is a
dinosaur
duck
fossil bird
monotreme mammal