continuous throughout
continuous throughout except in first 26 segments
continuous only in first four segments
divided into a number of compartments throughout
C. continuous only in first four segments
mucus secreted by epidermis
segmentation of the body
rhythmic contraction of segments
setae and contraction of segments
10th
12th
14th
18th
amylase
proteases
lipases
cocoon
pharyngeal
integumentary
both (a) and (b)
none of these
17
18
19 and 22
17 and 19
oviduct
spermatheca
cocoon
clitellum
integumentary
pharyngeal only
septal only
both (b) and (c)
earthworm
ringworm
roundworm
clemworm
coating of sperms
structure for storing sperms
male copula to ry organs
female copulatory organs
pharynx
stomach
typholsole
gizzard
liver of invertebrates
liver of vertebrates
kidney of vertebrates
uriniferous tubules of vertebrates
fifth to twenty-sixth segment
first to twenty-sixth segment
fifteenth to twenty-sixth segment
immediately after clitellar region to twenty sixth segment
Liver of vertebrates
Choanocytes of sponges
Malpighian tubules of vertebrates
None of these
Hirudin
Heparin
Haematin
Haemozoin
distributive in 1-13 segments
collective in 1-13
completely distributive
completely collective
12,13 and 14 segments
13,14 and 15 segments
14,15 and 16 segments
16,17 and 1&segments
to kill bacteria
to increase absorptive surface
to produce digestive enzymes
to control blood flow
intestine
blood
coelom
gizzard
setae
circular muscles
coelomic fluid
longitudinal muscles
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
producing sperms
storage of its own sperms
storage of sperms of another earthworm after copulation
all of these
integumentary nephridia
septal nephridia
pharyngeal nephridia
none of these
metameric segmentation
true coelom
closed circulatory system
all of these
secretion of slime
excretion
absorption of digested food
crushing the food
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)
each intersegmental septum
septal excretory canal
lumen of the intestine
supra-intestinal excretory ducts
Nereis
Hirudinaria
Heteroneresis
Pheretima
conservation of water
conservation of heat
regulation of temperature
regulation of amino acids
Pharyngeal region
Clitellar region
Intestinal region
Typhlosolar region
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