Question

Given below is a list of ten animals each followed by three terms or features. Underline the term which does not match with the animal.
(i) Ameoba - Nucleus, tentacle, food vacuole.
(ii) Hydra - Invertebrata, Cnidaria, Crustacea.
(iii) Fish - Gills, paired fins, ear drum
(iv) Earthworm - Invertebrata, Annelida, Insecta.
(v) Grasshopper - wings, trachea, proboscis.
(vi) Butterfly - Insecta, Invertebrate, Mollusca.

Answer 1

1. Amoeba- tentacles are absent. Tentacles are tender and flexible elongated organ found in most invertebrates. Tentacles are found in cuttlefish, sea anemones, bryozoa, jellyfish, snails, and squid.

2. Hydra- Crustacea (belongs to phylum Cnidaria). Crustacea is a class of phylum Arthropoda.

3. Fish- Eardrums (Fish pick up sounds in the water through their bodies and in their internal ear, but lack eardrums).

4. Earthworm- Insecta (belongs to the phylum Annelida). Insecta is a class of phylum Arthropoda.

5. Grasshopper- proboscis. It is the nose of a mammal, especially when it is long and mobile)

6.Butterfly- Mollusca (belongs to the phylum Arthropoda). Mollusca is a phylum of Animalia. Haliotis, Pila, octopus are members of phylum Mollusca.