pharynx
stomach
typholsole
gizzard
B. stomach
House fly
Frog
Nereis
All of these
Liver of vertebrates
Choanocytes of sponges
Malpighian tubules of vertebrates
None of these
excretion
digestion
secretion
none of these
mucus secreted by epidermis
segmentation of the body
rhythmic contraction of segments
setae and contraction of segments
fifth to twenty-sixth segment
first to twenty-sixth segment
fifteenth to twenty-sixth segment
immediately after clitellar region to twenty sixth segment
oviduct
water
cocoon
ootheca
Nereis
Hirudinaria
Heteroneresis
Pheretima
conservation of water
conservation of heat
regulation of temperature
regulation of amino acids
continuous throughout
continuous throughout except in first 26 segments
continuous only in first four segments
divided into a number of compartments throughout
producing sperms
storage of its own sperms
storage of sperms of another earthworm after copulation
all of these
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
Pharyngeal region
Clitellar region
Intestinal region
Typhlosolar region
12,13 and 14 segments
13,14 and 15 segments
14,15 and 16 segments
16,17 and 1&segments
pharyngeal
integumentary
both (a) and (b)
none of these
pharynx
stomach
typholsole
gizzard
alimentary canal laiden with mud
blood
coelmic fluid
ventral nerve cord
distributive in 1-13 segments
collective in 1-13
completely distributive
completely collective
Hirudin
Heparin
Haematin
Haemozoin
ovary
chloragogen cell
testes
ganglia
10th
12th
14th
18th
earthworm
ringworm
roundworm
clemworm
secretion of slime
excretion
absorption of digested food
crushing the food
oviduct
spermatheca
cocoon
clitellum
7th, 8 th, 9th and 10th
8th, 10th, 12th and 15th
8th, 9th, 12th and 13th
7th, 9th, 12th and 13th
40% urea and 40% uric acid
50% urea and 40% ammonia
40% ammonia and 20% amino acids
60% ammonia and 20% amino acids
26
33
44
120
dorsal pores
coelomic pores
nephridial pores
anus
each intersegmental septum
septal excretory canal
lumen of the intestine
supra-intestinal excretory ducts
setae
circular muscles
coelomic fluid
longitudinal muscles
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)