True coelom appeared first in the course of evolution in
Echinodermata
Annelida
Chordata
Aschelminthes
Correct Answer :
B. Annelida
Related Questions
Which of the following is not a diploblas-tic group ?
Porifera
Coelentrata
Annelida
Platyhelminthes
The order insectivora of class mammalia includes
moles, shrews and hedgehogs
monkeys, apes and man
whales and dolphins
kangaroo, lions and wolves
Which of the following does not show J metamerism ?
Roundworms
Earthworms
Amphibian blind worms
Limbless lizards
In flat worms, annelids, mollusca and arthropods the mouth develops from blastopore, such animals should be called J
protostomes
deuterostomes
cyclostomes
blastostomes
True fishes possess gills and fins. Which of the following is not a true fish ?
Silver fish
Goldfish
Silver carp
Seahorse
Which of the following belongs to Mollusca ?
Starfish
Dogfish
Silver fish
Goldfish
Which of the following is homiother-mous ?
Lizard
Frog
Rabbit
Cuttlefish
Which one of the following is a coelenterate ?
Tea cucumber
Sea urchin
Sea horse
Sea pen
Aphrodite, commonly called as sea mouse is a/an
annelide
fish
mollusc
arthropod
The taxonomic unit of any rank/category is known as
species
taxon
taxis
genus
Amphixous is a marine animal belonging to the sub-phylum
Urochordata
Cephalochordata
Vertebrata
Hemichordata
Sepia is also known as
star fish
cartilagenous fish
jellyfish
cuttlefish
The correct phylogenetic sequence in taxonomy is
Pisces, Amphibia, Reptilia, Mammalia
Pisces, Reptilia, Amphibia, Mammalia
Amphibia, Pisces, Reptilia, Mammalia
Amphibia, Reptilia, Pisces, Mammalia
A true terestrial animal among these is
frog
tortoise
salamander
toad
Which of the following animals has a diaphragm between the thorax and abdomen ?
Frog
Lizard
Pigeon
Whale
Histological differentiation is absent in
Amoeba
Hydra
Earthworm
Cockroach
Taxonomy is the science that deals with the classification of
plants
animals
microorganisms
living organisms
Spider differs from insect as
spider has three pairs of legs
insect has four pairs of legs
spider has four paris of legs
none of these
The term "Monera" stands for
all prokaryotes
bacterai, blue green algae and sinlge celled eukaryotes
bacteria, blue green algae and single celled eukaryotic animals
single celled eukaryotes and prokaryotes
Apart from mammals, the other group of animals maintaining high and constant body temperature is
insects
birds
fishes
reptiles
The centipede has
100 legs
50-100 legs
As many legs as body segments
As many pairs of legs as body segments
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
Which is matching set in taxonomy ?
Neries, Planum, Roundworm, Earthworm
Millipede, Crab, Centipede, Cockroach
Star fish, Jelly fish, Cuttle fish, Octopus
Leech, Locust, Sea urchin, Lobster
A definite number of body segments is found in
leech
tapeworm
earthworm
slug
Salamander belongs to class
Reptilia
Amphibia
Aves
Mammalia
Which of the following is the correct pairing of the classification groups and common example ?
Porifera - Sea fan
Crustacea - Cuttle fish
Platyhelminthes - Neries
Martigophora - Volvox
Which of the following has no segmentation ?
Hydra
Earthworm
Cockroach
Centipede
Which of the following animals has a ventral nerve cord
Frog
Cockroach
Hydra
Earthworm
One of these is a metatherian mammal
Echidna
Kangaroo
Pangolin
Panda
Natural system of classification has the basis of
morphology
Phylogeny
both (a) and (b)
ontogeny