1. Tardigrade
  2. Question
  3. Biology
  4. Read the following statements. (a) Over one-third of all named species on earth are arthropods. (b) All molluscs contain a file like a rasping organ for feeding. (c) Nereis possess parapodia which help in swimming. (d) Development is indirect in Bufo. Choose the incorrect statements

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Q. Read the following statements.
(a) Over one-third of all named species on earth are arthropods.
(b) All molluscs contain a file like a rasping organ for feeding.
(c) Nereis possess parapodia which help in swimming.
(d) Development is indirect in Bufo.
Choose the incorrect statements

NTA AbhyasNTA Abhyas 2020Animal Kingdom

Solution:

Phylum Arthropoda: This is the largest phylum of kingdom Animalia which includes insects. Over two-thirds of all named species on earth are arthropods.
Nereis possess lateral appendages, parapodia, which help in swimming.
In Molluscs, the mouth contains a file-like rasping organ for feeding, called a radula.
In Bufo (toad), fertilisation is external. They are oviparous, and development is indirect.