Answer:
The answers are :-
1) Porifera
2)Cordate
3)Arthropods
4)Platyhelminthes
5)Mollusca
6)Cnidaria
7)Nematode
8)Annelida
9)Echinodermata
Explanation:
The explanation is as follows,
<em>1) Porifera lack tissues</em>
<em>2) cordates have hollow nerve cord at some point of time</em>
<em>3) Arthropods have chitinous exoskeleton</em>
<em>4) Platyhelminthes class has the species flatworms</em>
<em>5)Mollusca contain the species molluskum.</em>
<em>6)Cnidaria have 2 layer cells</em>
<em>7)Nematoda have species round worms</em>
<em>8)Annelida have species segmented worms</em>
<em>9)Echinodermata have species with radial symmetry</em>