Question

complete the following table
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Answer 1

choose one word for chart

1. Characteristics of CyclostomataMedian fins with cartilaginous fin rays. No paired appendages. The skin is soft and smooth, devoid of any scales. Spleen is absent.
2. A gill is a respiratory organ found in many aquatic organisms that extracts dissolved oxygen from water and excretes carbon dioxide. The gills of some species, such as hermit crabs, have adapted to allow respiration on land provided they are kept moist.
3. ?
4. ?

hope it helps

Answer 2

Answer:

1) Type:- Cyclostomata

Character :- spleen in absent

Example :- Hagfishes

2) Example :- Fish

Character:- Gill respiration