Liver of vertebrates
Choanocytes of sponges
Malpighian tubules of vertebrates
None of these
B. Choanocytes of sponges
17
18
19 and 22
17 and 19
oviduct
water
cocoon
ootheca
Nereis
Hirudinaria
Heteroneresis
Pheretima
oviduct
spermatheca
cocoon
clitellum
each intersegmental septum
septal excretory canal
lumen of the intestine
supra-intestinal excretory ducts
Hirudin
Heparin
Haematin
Haemozoin
liver of invertebrates
liver of vertebrates
kidney of vertebrates
uriniferous tubules of vertebrates
earthworm
ringworm
roundworm
clemworm
dorsal pores
coelomic pores
nephridial pores
anus
Liver of vertebrates
Choanocytes of sponges
Malpighian tubules of vertebrates
None of these
body wall
gizzard
typholsole
pharynx
to kill bacteria
to increase absorptive surface
to produce digestive enzymes
to control blood flow
metameric segmentation
true coelom
closed circulatory system
all of these
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
generally at night during rainy season
generally at day time during rainy season
at night during winter season
at night during summer season
pharynx
stomach
typholsole
gizzard
amylase
proteases
lipases
cocoon
setae
circular muscles
coelomic fluid
longitudinal muscles
sterile
unisexual
hermaphrodite
radial symmetrical
integumentary nephridia
septal nephridia
pharyngeal nephridia
none of these
Pharyngeal region
Clitellar region
Intestinal region
Typhlosolar region
intestine
blood
coelom
gizzard
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
10th and 11th segments
11th and 12th segments
14th and 15th segments
none of these
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
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
prostomium
peristomium
stomium
protostomium
fifth to twenty-sixth segment
first to twenty-sixth segment
fifteenth to twenty-sixth segment
immediately after clitellar region to twenty sixth segment