Question

Define phylum nematode
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Answer 1

Answer:

The nematodes or roundworms constitute the phylum Nematoda, with plant-parasitic nematodes being known as eelworms. They are a diverse animal phylum inhabiting a broad range of environments.

Scientific name: Nematoda

Higher classification: Ecdysozoa

Rank: Phylum

Phylum: Nematoda; Diesing, 1861

Kingdom: Animalia

Subkingdom: Eumetazoa

Answer 2

The organisms belonging to the phylum Nematoda are also known as “roundworms”. There are 28000 species of Nematoda identified till date. They are unsegmented vermiform animals. The epidermis has dorsal and ventral nerve cords.

The Nematodes present in the soil feed on the bacteria, fungi, and other nematodes, and play an important role in nutrient recycling. They also attack the insects and control the pests. However, they cause severe damage to plants. They feed on the plant roots and reduce the nutrient uptake and stress tolerance of the plant.