The chloragogen cells of earthworm are analogous to
liver of invertebrates
liver of vertebrates
kidney of vertebrates
uriniferous tubules of vertebrates
Correct Answer :
B. liver of vertebrates
Related Questions
Nephrostomes are found in
integumentary nephridia
septal nephridia
pharyngeal nephridia
none of these
Earthworms do not have any respiratory organs because
they do not need them
they are burrowing in habit
there is no sufficient space for such organs
the surface acts as an absorptive area which is larger than the volume
The dorsal blood vessel in earthworm is
distributive in 1-13 segments
collective in 1-13
completely distributive
completely collective
The direction of blood flow in the dorsal vessel of earthworm is
from the posterior to the anterior end
from the anterior end to the posterior end
from dorsal vessel to ventral vessel
alternately in both directions (a) and (b)
The cliteilum singulum in earthworm is formed by
12,13 and 14 segments
13,14 and 15 segments
14,15 and 16 segments
16,17 and 1&segments
Structure typically represented in every segment of earthworm is
ovary
chloragogen cell
testes
ganglia
Totally marine annelids belong to the
oligochaeta
polychaeta
hirudinea
archainnelida
In earthworm, the septal nephridia put their excretory discharge into
intestine
blood
coelom
gizzard
The coelomic fluid in earthworm escapes through
dorsal pores
coelomic pores
nephridial pores
anus
In earthworm testes are situated in the
10th and 11th segments
11th and 12th segments
14th and 15th segments
none of these
In earthworm, the circular muscles are highly developed in
body wall
gizzard
typholsole
pharynx
Copulation occurs between two earthworms
generally at night during rainy season
generally at day time during rainy season
at night during winter season
at night during summer season
The enteronephric nephridia in earthworm are
integumentary
pharyngeal only
septal only
both (b) and (c)
The septal and pharyngeal nephridia open into the alimentary canal and are of enteronephric type. It is an adaptation for
conservation of water
conservation of heat
regulation of temperature
regulation of amino acids
Anticoagulant secreted by leech is
Hirudin
Heparin
Haematin
Haemozoin
In earthworm, the nephridia without neprostomes are
pharyngeal
integumentary
both (a) and (b)
none of these
The fertilization in earthworms occurs in
oviduct
spermatheca
cocoon
clitellum
Role of typhlosole in the intestine of earthworm is
to kill bacteria
to increase absorptive surface
to produce digestive enzymes
to control blood flow
Metamerism is present in
House fly
Frog
Nereis
All of these
In earthworm, the first segment in which mouth is situated is known as
prostomium
peristomium
stomium
protostomium
The chloragogen cells of earthworm are analogous to
liver of invertebrates
liver of vertebrates
kidney of vertebrates
uriniferous tubules of vertebrates
Sperma thecae in earthworm are meant few
producing sperms
storage of its own sperms
storage of sperms of another earthworm after copulation
all of these
Blood glands in Earthworm are associated with
excretion
digestion
secretion
none of these
5. The pre-typhlosolar region in Pheretima extends from
fifth to twenty-sixth segment
first to twenty-sixth segment
fifteenth to twenty-sixth segment
immediately after clitellar region to twenty sixth segment
Chetae are totally absent in
Nereis
Hirudinaria
Heteroneresis
Pheretima
The number of segments in leech is
26
33
44
120
Pheretima is
sterile
unisexual
hermaphrodite
radial symmetrical
The excretory organs of earthworm are
kidneys
solenocytes
nephridia
green glands
A chitinous lining in earthworm is found in
pharynx
stomach
typholsole
gizzard
In earthworm fertilisation occurs in
oviduct
water
cocoon
ootheca