integumentary
pharyngeal only
septal only
both (b) and (c)
D. both (b) and (c)
body wall
gizzard
typholsole
pharynx
mucus secreted by epidermis
segmentation of the body
rhythmic contraction of segments
setae and contraction of segments
40% urea and 40% uric acid
50% urea and 40% ammonia
40% ammonia and 20% amino acids
60% ammonia and 20% amino acids
continuous throughout
continuous throughout except in first 26 segments
continuous only in first four segments
divided into a number of compartments throughout
alimentary canal laiden with mud
blood
coelmic fluid
ventral nerve cord
intestine
blood
coelom
gizzard
producing sperms
storage of its own sperms
storage of sperms of another earthworm after copulation
all of these
Earthworm
Ascaris
Tapeworm
Insects
generally at night during rainy season
generally at day time during rainy season
at night during winter season
at night during summer season
setae
circular muscles
coelomic fluid
longitudinal muscles
liver of invertebrates
liver of vertebrates
kidney of vertebrates
uriniferous tubules of vertebrates
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
oviduct
water
cocoon
ootheca
earthworm
ringworm
roundworm
clemworm
Liver of vertebrates
Choanocytes of sponges
Malpighian tubules of vertebrates
None of these
7th, 8 th, 9th and 10th
8th, 10th, 12th and 15th
8th, 9th, 12th and 13th
7th, 9th, 12th and 13th
Nereis
Hirudinaria
Heteroneresis
Pheretima
pharynx
stomach
typholsole
gizzard
each intersegmental septum
septal excretory canal
lumen of the intestine
supra-intestinal excretory ducts
12,13 and 14 segments
13,14 and 15 segments
14,15 and 16 segments
16,17 and 1&segments
17
18
19 and 22
17 and 19
kidneys
solenocytes
nephridia
green glands
oviduct
spermatheca
cocoon
clitellum
Hirudin
Heparin
Haematin
Haemozoin
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
secretion of slime
excretion
absorption of digested food
crushing the food
sterile
unisexual
hermaphrodite
radial symmetrical
26
33
44
120
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
coating of sperms
structure for storing sperms
male copula to ry organs
female copulatory organs