Chapter: Animal Classification· Science & Technology Part 2

Label the following (figures of a jellyfish, a marine segmented worm, an acorn worm and a bony fish).

Label the following.

[Figure: Four animals: (1) a jellyfish with a dome-shaped bell and many long trailing tentacles; (2) a long, segmented marine worm with many paired bristly side projections along the body and tentacles at the head end; (3) a soft worm-like animal with a swollen front end and a long trunk (acorn worm); (4) a bony fish with an eye, a gill cover, a dorsal fin, pectoral and pelvic fins, an anal fin and a forked tail fin.]

Doubtly Asked 4 Nov 2026 Student doubt Save WhatsApp Report

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1. Jellyfish (Phylum Coelenterata/Cnidaria)
Labels: umbrella (bell), tentacles, oral arms, mouth (on the under side of the bell).

2. Nereis (Phylum Annelida)
Labels: head with tentacles, mouth, segments, parapodia (paired side projections used for swimming), anus (at the hind end).

3. Balanoglossus (Phylum Hemichordata, acorn worm)
Labels: proboscis, collar, trunk.

4. Bony fish such as Rohu (Phylum Chordata, Class Pisces)
Labels: mouth, eye, operculum (gill cover), scales, lateral line, dorsal fin, pectoral fin, pelvic fin, anal fin, caudal (tail) fin.

Doubtly AI · 4 Nov 2026 AI-verified · Nov 2026 Report

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Label the following (figures of a jellyfish, a marine segmented worm, an acorn worm and a bony fish).

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