The fertilization in earthworms occurs in
oviduct
spermatheca
cocoon
clitellum
Correct Answer :
C. cocoon
Related Questions
In earthworm, the genital papillae are situated ventrally on segments
17
18
19 and 22
17 and 19
Chetae are totally absent in
Nereis
Hirudinaria
Heteroneresis
Pheretima
Locomotion in Earthworm is directly facilitated by
mucus secreted by epidermis
segmentation of the body
rhythmic contraction of segments
setae and contraction of segments
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
Role of typhlosole in the intestine of earthworm is
to kill bacteria
to increase absorptive surface
to produce digestive enzymes
to control blood flow
In earthworm fertilisation occurs in
oviduct
water
cocoon
ootheca
Annelids show advancement over the nematoda in having
metameric segmentation
true coelom
closed circulatory system
all of these
The terminal nephridial ducts of the septal nephridia of Pheretima open into
each intersegmental septum
septal excretory canal
lumen of the intestine
supra-intestinal excretory ducts
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
The chloragogen cells of earthworm are analogous to
liver of invertebrates
liver of vertebrates
kidney of vertebrates
uriniferous tubules of vertebrates
In earthworm testes are situated in the
10th and 11th segments
11th and 12th segments
14th and 15th segments
none of these
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
Haemoglobin is dissolved in plasma is
Earthworm
Ascaris
Tapeworm
Insects
A chitinous lining in earthworm is found in
pharynx
stomach
typholsole
gizzard
The female genital aperture in earthworm is present ventrally on segment
10th
12th
14th
18th
The number of segments in leech is
26
33
44
120
Chloragogen cells of Pheretima play a role very much like that of
Liver of vertebrates
Choanocytes of sponges
Malpighian tubules of vertebrates
None of these
The fertilization in earthworms occurs in
oviduct
spermatheca
cocoon
clitellum
Nereis is commonly called
earthworm
ringworm
roundworm
clemworm
A skeleton like function during locomotion of Pheretima is performed by
alimentary canal laiden with mud
blood
coelmic fluid
ventral nerve cord
The coelomic fluid in earthworm escapes through
dorsal pores
coelomic pores
nephridial pores
anus
Which of the following statements is correct ?
Blood of earthworm is blue in colour
Blood pigment of earthworm is haemocyanin
Blood pigment of earthworm is red and haemoglobin is dissolved in plasma
Blood of earthworm is red and haemoglobin is dissolved in RBC
Chromophil cells in earthworm are concerned with the secretion of
amylase
proteases
lipases
cocoon
Metamerism is present in
House fly
Frog
Nereis
All 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
Spermathecae in earthworm represent
coating of sperms
structure for storing sperms
male copula to ry organs
female copulatory organs
The gizzard of earthworm is an organ of
secretion of slime
excretion
absorption of digested food
crushing the food
In earthworm, the circular muscles are highly developed in
body wall
gizzard
typholsole
pharynx
In earthworm, the nephridia without neprostomes are
pharyngeal
integumentary
both (a) and (b)
none of these
The dorsal blood vessel in earthworm is
distributive in 1-13 segments
collective in 1-13
completely distributive
completely collective