each intersegmental septum
septal excretory canal
lumen of the intestine
supra-intestinal excretory ducts
B. septal excretory canal
Hirudin
Heparin
Haematin
Haemozoin
7th, 8 th, 9th and 10th
8th, 10th, 12th and 15th
8th, 9th, 12th and 13th
7th, 9th, 12th and 13th
fifth to twenty-sixth segment
first to twenty-sixth segment
fifteenth to twenty-sixth segment
immediately after clitellar region to twenty sixth segment
earthworm
ringworm
roundworm
clemworm
prostomium
peristomium
stomium
protostomium
mucus secreted by epidermis
segmentation of the body
rhythmic contraction of segments
setae and contraction of segments
close to lateral hearts in segments 12 and 13
along the latero-oesophageal hearts in segments 12 and 13
both (a) and (b)
behind the pharyngeal mass in segments 4, 5 and 6
metameric segmentation
true coelom
closed circulatory system
all of these
continuous throughout
continuous throughout except in first 26 segments
continuous only in first four segments
divided into a number of compartments throughout
integumentary
pharyngeal only
septal only
both (b) and (c)
alimentary canal laiden with mud
blood
coelmic fluid
ventral nerve cord
Liver of vertebrates
Choanocytes of sponges
Malpighian tubules of vertebrates
None of these
amylase
proteases
lipases
cocoon
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
kidneys
solenocytes
nephridia
green glands
oviduct
spermatheca
cocoon
clitellum
secretion of slime
excretion
absorption of digested food
crushing the food
dorsal pores
coelomic pores
nephridial pores
anus
12,13 and 14 segments
13,14 and 15 segments
14,15 and 16 segments
16,17 and 1&segments
10th
12th
14th
18th
pharyngeal
integumentary
both (a) and (b)
none of these
pharynx
stomach
typholsole
gizzard
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)
coating of sperms
structure for storing sperms
male copula to ry organs
female copulatory organs
sterile
unisexual
hermaphrodite
radial symmetrical
distributive in 1-13 segments
collective in 1-13
completely distributive
completely collective
producing sperms
storage of its own sperms
storage of sperms of another earthworm after copulation
all of these
body wall
gizzard
typholsole
pharynx
generally at night during rainy season
generally at day time during rainy season
at night during winter season
at night during summer season
Nereis
Hirudinaria
Heteroneresis
Pheretima