Practice free Classification of Animal Kingdom (Zoology) NEET multiple-choice questions online with instant answers and detailed explanations. No login required.
All Echinoderms are exclusively found in which type of habitat?
The text clearly states regarding Echinodermata that 'All are marine'.
Which of the following is an example of an Echinoderm?
The examples provided for Phylum Echinodermata include 'Asterias (Star fish)'. Pila and Octopus belong to Mollusca, and Balanoglossus belongs to Hemichordata.
What kind of development is observed in Echinodermata?
The NCERT states, 'Development is indirect with free-swimming larva', for Echinodermata.
Echinoderms are described as triploblastic and coelomate animals. What does this indicate about their embryonic development and body cavity?
The text mentions, 'They are triploblastic and coelomate animals.' Triploblastic means developing from three germ layers, and coelomate means possessing a true coelom.
Which of the following echinoderms is correctly matched with its common name?
From the examples given: 'Echinus (Sea urchin)', 'Antedon (Sea lily)', 'Cucumaria (Sea cucumber)', and 'Ophiura (Brittle star)'. Therefore, Cucumaria - Sea cucumber is the correct match.
Fertilisation in Echinodermata is typically:
The text states, 'Fertilisation is usually external' for Echinodermata.
The level of organisation observed in Echinodermata is:
The NCERT mentions that Echinoderms are 'All are marine with organ-system level of organisation'.
Which class of animals does not belong to Phylum Echinodermata?
Asteroidea, Echinoidea, and Crinoidea are classes within Echinodermata. Cephalopoda is a class within Phylum Mollusca, as seen in the example 'Octopus (Devil fish)' under Mollusca.
The spiny skin characteristic of Echinoderms is due to their:
The name Echinodermata means 'Spiny bodied' and refers to their endoskeleton of calcareous ossicles which often bear spines, giving them a spiny appearance. The summary also states, 'The echinoderms possess a spiny skin.'
Sexes for Echinodermata are described as:
The NCERT text specifies, 'Sexes are separate' for Echinodermata.
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