Dolphins are classified under
Pisces
Amphibia
Reptile
Mammals
Correct Answer :
D. Mammals
Related Questions
Body segments are said to be homono-mous when
external segments correspond to internal segments
the body of an animal is made up of dissimilar units
all body segments along the length of the body are similar
none of these
Segmentation of the body is not represented in
crayfish
frog
grasshopper
starfish
The basic unit of taxonomy is
genus
order
class
species
The system of classification proposed by Linnaeus is regarded by modem biologists as
an artificial system of classification
a natural system of classification
a system based on phylogeny
none of these
Which one of the following sets of animals are homeothermic ?
Salamandar, lizard, penguin and bat
Tortoise, crocodile, crow and bat
Crow, penguin, bat and rat
Turtle, ostrich, spiny ant eater and dog
The larval forms called bladder worms are characteristic of
intestinal parasites
earthworms
roundworms
tapeworms
The mammals of order Rodentia have
long incisors
short incisors
long canines
long molars
The biggest phylum in regard to the number of species is
Arthropoda
Platyhelminthes
Chordata
Protozoa
Brain coral is
fungia
meandria
astia
none of these
Animals belonging to order Rodentia have
long incisors
long canines
short canines
short incisors
Aside from a three chambered heart, reptiles are characterised by the presence of
limb girdles
dermal scales
lungs
dorsal nerve cord
Exclusively marine chelones are known as
tortoise
turtles
sea hares
none of these
Salamander belongs to class
Reptilia
Amphibia
Aves
Mammalia
Sepia is also known as
star fish
cartilagenous fish
jellyfish
cuttlefish
'Systema Naturae' was written by
Carolus Linnaeus
Charles Darwin
Lamarck
Wallace
The most important characteristic of class aves is
homeothermous animals
exoskeleton of feathers
bipedal vertebrates
none of these
Birds and bats are good fliers. The bat differs from a bird in having
diaphragm
four-chambered heart
wings
small brain
The group amniota includes
birds and mammals
birds and reptiles
reptiles and mammals
reptiles, birds and mammals
Which of the following is not a deuteros-tome phylum ?
Mollusca
Echinodermata
Hemichordata
Urochordata
The respiratory organs of crustaceans are
tracheae
book lungs
gills
skin
Hair of bat and feathers of pigeon are
homologous structures
analogous structures
both (a) and (b
integumentary derivatives
The term Thylum' in taxonomy was given by
John Ray
Carolus Linnaeus
G.L. Cuvier
All of these
Octopus belongs to class
mollusca
cephalopoda
anneilida
arthropoda
Which of the following animals has a ventral nerve cord
Frog
Cockroach
Hydra
Earthworm
What is common to fishes, amphibians and reptiles ?
Scales
Eggs
Shelled eggs
Gills
One of the following is not an animal:
Ant eater
Dolfin
Heloderma
Echidna
In fishes, lobed fins are found in
marine fishes
fresh water fishes
lung fishes
none of these
In which of the following sets, groups are not correctly matched ?
Onychophora, Myriapoda, Arachnida
Hydrozoa, Scyphozoa, Anthozoa
Polychaeta, Hirudiniea, Oligochaeta
Gastropoda, Rhizopoda, Scaphopoda
Cephalophoda is a class of animals in which
notochord extends upto head
foot is located on head
head is located on foot
head is fused with thorax
Viviparous animal is
shark
mud puppy
bony fish
fish