Nereis
Hirudinaria
Heteroneresis
Pheretima
B. Hirudinaria
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
fifth to twenty-sixth segment
first to twenty-sixth segment
fifteenth to twenty-sixth segment
immediately after clitellar region to twenty sixth segment
10th
12th
14th
18th
House fly
Frog
Nereis
All of these
intestine
blood
coelom
gizzard
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
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
integumentary
pharyngeal only
septal only
both (b) and (c)
coating of sperms
structure for storing sperms
male copula to ry organs
female copulatory organs
ovary
chloragogen cell
testes
ganglia
alimentary canal laiden with mud
blood
coelmic fluid
ventral nerve cord
sterile
unisexual
hermaphrodite
radial symmetrical
40% urea and 40% uric acid
50% urea and 40% ammonia
40% ammonia and 20% amino acids
60% ammonia and 20% amino acids
pharynx
stomach
typholsole
gizzard
continuous throughout
continuous throughout except in first 26 segments
continuous only in first four segments
divided into a number of compartments throughout
7th, 8 th, 9th and 10th
8th, 10th, 12th and 15th
8th, 9th, 12th and 13th
7th, 9th, 12th and 13th
amylase
proteases
lipases
cocoon
each intersegmental septum
septal excretory canal
lumen of the intestine
supra-intestinal excretory ducts
kidneys
solenocytes
nephridia
green glands
conservation of water
conservation of heat
regulation of temperature
regulation of amino acids
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)
integumentary nephridia
septal nephridia
pharyngeal nephridia
none of these
to kill bacteria
to increase absorptive surface
to produce digestive enzymes
to control blood flow
pharyngeal
integumentary
both (a) and (b)
none of these
Nereis
Hirudinaria
Heteroneresis
Pheretima
setae
circular muscles
coelomic fluid
longitudinal muscles
Hirudin
Heparin
Haematin
Haemozoin
producing sperms
storage of its own sperms
storage of sperms of another earthworm after copulation
all of these
Earthworm
Ascaris
Tapeworm
Insects
secretion of slime
excretion
absorption of digested food
crushing the food