The basic unit of taxonomy is
genus
order
class
species
Correct Answer :
D. species
Related Questions
According to Aristotle's classification, animals were divided into
Protozoa and Metazoa
Invertebrata and Vertebrata
Chordata and Non-chordata
Anaima and Enaima
Which of the following belongs to the same phylum ?
Mollusca, cockroach, centipede
Turbellaria, cestoda, trematoda
Both (a) and (b)
None of these
The term Thylum' in taxonomy was given by
John Ray
Carolus Linnaeus
G.L. Cuvier
All of these
Presence of a vestigeal appendix in man suggests that our forebears were
herbivores
carnivores
omnivores
fruit eaters
Monotremata is a group of animals which includes
fishes with a sinlge gill aperture
insects with a single pair of functional spiracles
mammals with a single common cloacal opening
protozoans with single flagellum
Most important characteristic of the mammal is the presence of
pinnae
four-chambered heart
movement on two limbs only
diaphragm
Which of the following is not an enterocoelic phylum ?
Chordata
Mollusca
Coelentrata
Porifera
Which of the group has no member having gliding or flying appendages ?
Cydostomata
Fishes
Reptiles
Mammals
The type of symmetry best suited to non-motile organisms is
radial symmetry
bilateral symmetry
asymmetry
both (a) and (b)
Which of the following shows deuteros- I tome condition ?
Acoelomate animals
Pseudocoelomate animals
Animals with enterocoel
Animals with schizocoel
These species inhabiting different geographical areas are
allopatric
sibling species
morphospecies
sympatric
Nauplius larva belongs to
insects
shrimps
echinoderms
molluscs
A triploblastic animal in which I mesenchyme fills the space between ectoderm and endoderm is
Sea anemone
Planarian
Pheretima
Starfish
Members of which phylum exhibit adaptations widely varied environmental conditions ?
Annelida
Platyhelminthes
Echinodermata
Mollusca
One of the primary characters of chlor-date is
solid ventral nerve cord
dorsal tubular nerve cord
paired nerve cords
ganglionated nerve cord
Histological differentiation is absent in
Amoeba
Hydra
Earthworm
Cockroach
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
Constant body temperature is found in
earthworm
snake
frog
cow
Animals belonging to order Rodentia have
long incisors
long canines
short canines
short incisors
For finding a haemocoel which animal you will select ?
Earthworm
Hydra
Ascaris
Scolopendra
Antedon belongs to class
echinodermata
ophiuroidea
crinoidea
echinoidea
Metamerism is a characteristic feature of
porifera
mollusca
annalida
platyhelminthes
Aside from a three chambered heart, reptiles are characterised by the presence of
limb girdles
dermal scales
lungs
dorsal nerve cord
Sea Stick refers to group
porifera
coelentrata
annelida
mollusca
True coelom appeared first in the course of evolution in
Echinodermata
Annelida
Chordata
Aschelminthes
The main basis of classification of Protozaoa is
number of nuclei
shape of the organisms
method of reproduction
locomotary device
The most important characteristic of class aves is
homeothermous animals
exoskeleton of feathers
bipedal vertebrates
none of these
Pheretivia is placed in class
annelida
chaetopoda
polychaeta
oligochaeta
One of the following is not a true fish :
Saw fish
Silver fish
Dogfish
Pipefish
The basic unit of taxonomy is
genus
order
class
species