1
Q
Properties
A
Earlier placed under phylum Chordata due to similar structure to notochord called as STOMOCHORD.
later it was observed tht stomochord has a different origin (ectodermal)
Hence both structures are different and got placed under a different phylum
2
Q
Body divisible into
A
Proboscis,
Collar (stomochord here)
Trunk
3
Q
DS
A
Complete
4
Q
RS
A
Gills
5
Q
CS
A
Open
6
Q
ES
A
Proboscis gland
7
Q
Reproduction
A
Sexual as well as unisexual
8
Q
Fertilization
A
External
9
Q
Development
A
Indirect
10
Q
Habitat
A
Exclusively marine
11
Q
LOO
A
Organ system
12
Q
Symmetry
A
Bilateral
13
Q
BP
A
Tube within tube
14
Q
GL
A
Triploblastic
15
Q
Coelom
A
Eucoelomate
16
Q
Metamerism
Notochord
A
No
No
17
Q
Examples
A
1) Balanoglossus (also known as acorn worms)
2) Saccoglossus,
3) Cephalodiscus
ANIMAL KINGDOM (ZOO)
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Decks in class (11)
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