Which of the following animals has a ventral nerve cord
Frog
Cockroach
Hydra
Earthworm
Correct Answer :
B. Cockroach
Related Questions
Which of the following belongs to the same phylum ?
Mollusca, cockroach, centipede
Turbellaria, cestoda, trematoda
Both (a) and (b)
None of these
According to Whittaker, the term 'protista' includes
all types of single celled eukaryotic organisms
all types of single celled plants, animals as well as bacteria
all types of bacteria and blue green algae
all types of sinlge celled eukaryotes and prokaryotes
The term Thylum' in taxonomy was given by
John Ray
Carolus Linnaeus
G.L. Cuvier
All of these
Which of the following is not a part of true body cavity ?
Pleural cavity
Pericardial cavity
Peritoneal cavity
The cavity inside the stomach and intestine
The most important characteristic of class aves is
homeothermous animals
exoskeleton of feathers
bipedal vertebrates
none of these
Limulus, the king-crab, is the only living representative of the order xiphosura belonging to the phylum
Annelida
Mollusca
Echinodermata
Arthropoda
Which of the following has no segmentation?
Hydra
Earthworm
Centipede
Cockroach
Which of the following groups of characters is present in all chordates in some or other stage in their life ?
Mammary glands, hairs, gill slits
Notochord, gill slits and dorsal ! tubular nervous system
Notochord, scales and dorsal tubular nervous system
Gill slits, vertebral column and notochoitl
The correct phylogenetic sequence in taxonomy is
Pisces, Amphibia, Reptilia, Mammalia
Pisces, Reptilia, Amphibia, Mammalia
Amphibia, Pisces, Reptilia, Mammalia
Amphibia, Reptilia, Pisces, Mammalia
Hair of bat and feathers of pigeon are
homologous structures
analogous structures
both (a) and (b
integumentary derivatives
A definite number of body segments is found in
leech
tapeworm
earthworm
slug
Which of the following is represented by the largest number of species ?
Insecta
Protozoa
Mammalia
Aves
Archaeopteryx called a connecting link, carried the characters, of
reptile and bird
reptile and mammals
fish and amphibia
reptile and amphibia
Most important characteristic of the mammal is the presence of
pinnae
four-chambered heart
movement on two limbs only
diaphragm
Which of the group has no member having gliding or flying appendages ?
Cydostomata
Fishes
Reptiles
Mammals
Tortoises and turtles are included under order
Reptilia
Squamata
Chelonia
None of these
The respiratory organs of crustaceans are
tracheae
book lungs
gills
skin
Animals belonging to order Rodentia have
long incisors
long canines
short canines
short incisors
'Systema Naturae' was written by
Carolus Linnaeus
Charles Darwin
Lamarck
Wallace
According to Aristotle's classification, animals were divided into
Protozoa and Metazoa
Invertebrata and Vertebrata
Chordata and Non-chordata
Anaima and Enaima
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
Nauplius larva belongs to
insects
shrimps
echinoderms
molluscs
The mammals of order Rodentia have
long incisors
short incisors
long canines
long molars
Cloning is possible in nature in
sexually reproducing species
asexually reproducing species
self-fertilising species
none of these
A limbless amphibian is
Siren
Ophiosaurus
Triturus
Ichthyophis
Echis carinata is known as
coral snake
brain coral
tree snake
none of these
For finding a haemocoel which animal you will select ?
Earthworm
Hydra
Ascaris
Scolopendra
Which of the following does not show J metamerism ?
Roundworms
Earthworms
Amphibian blind worms
Limbless lizards
Which of the following is a matching set of the class and some of its main distinguishing features?
Sporozoa - infection by sporozoites transmission by intermediate host and a contractile vacuole
Trematoda - well developed suckers, flat and unsegmented body
Arachnida - 3 pairs of legs, chitinous exosketeton and poisonous sting
Insecta - compound eyes, segmented body and nephridia