Chromophil cells in earthworm are concerned with the secretion of
amylase
proteases
lipases
cocoon
Correct Answer :
B. proteases
Related Questions
Nephrostomes are found in
integumentary nephridia
septal nephridia
pharyngeal nephridia
none of these
Metamerism is present in
House fly
Frog
Nereis
All of these
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 number of segments in leech is
26
33
44
120
In earthworm, the first segment in which mouth is situated is known as
prostomium
peristomium
stomium
protostomium
Earthworm is useful because it
helps in fixing atmospheric nitrogen
helps in making the land porous
kills harmful bacteria of the soil
helps in making the land fertile by turning it upside down
Chetae are totally absent in
Nereis
Hirudinaria
Heteroneresis
Pheretima
The female genital aperture in earthworm is present ventrally on segment
10th
12th
14th
18th
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 excretory organs of earthworm are
kidneys
solenocytes
nephridia
green glands
Blood glands in Earthworm are associated with
excretion
digestion
secretion
none of these
The coelom in Pherethna is
continuous throughout
continuous throughout except in first 26 segments
continuous only in first four segments
divided into a number of compartments throughout
In earthworm, the nephridia without neprostomes are
pharyngeal
integumentary
both (a) and (b)
none of these
In earthworm, the genital papillae are situated ventrally on segments
17
18
19 and 22
17 and 19
Role of typhlosole in the intestine of earthworm is
to kill bacteria
to increase absorptive surface
to produce digestive enzymes
to control blood flow
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
Annelids show advancement over the nematoda in having
metameric segmentation
true coelom
closed circulatory system
all of these
Chromophil cells in earthworm are concerned with the secretion of
amylase
proteases
lipases
cocoon
Structure typically represented in every segment of earthworm is
ovary
chloragogen cell
testes
ganglia
Totally marine annelids belong to the
oligochaeta
polychaeta
hirudinea
archainnelida
A chitinous lining in earthworm is found in
pharynx
stomach
typholsole
gizzard
In earthworm fertilisation occurs in
oviduct
water
cocoon
ootheca
In the blood vascular system of earthworm there are four pairs of hearts present in the first 13 segments. These are situated in the segments
7th, 8 th, 9th and 10th
8th, 10th, 12th and 15th
8th, 9th, 12th and 13th
7th, 9th, 12th and 13th
Locomotion in Earthworm is directly facilitated by
mucus secreted by epidermis
segmentation of the body
rhythmic contraction of segments
setae and contraction of segments
Which region in earthworm is the forest of nephridia ?
Pharyngeal region
Clitellar region
Intestinal region
Typhlosolar region
The fertilization in earthworms occurs in
oviduct
spermatheca
cocoon
clitellum
Pheretima is
sterile
unisexual
hermaphrodite
radial symmetrical
Haemoglobin is dissolved in plasma is
Earthworm
Ascaris
Tapeworm
Insects
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
A skeleton like function during locomotion of Pheretima is performed by
alimentary canal laiden with mud
blood
coelmic fluid
ventral nerve cord