Practice free Zoology NEET multiple-choice questions online with instant answers and detailed explanations. No login required.
Which of the following describes the skeletal structure of Echinodermata?
According to the NCERT text, 'These animals have an endoskeleton of calcareous ossicles and, hence, the name Echinodermata (Spiny bodied).' This clearly indicates an endoskeleton made of calcareous ossicles.
Regarding the symmetry of Echinodermata, which statement is correct?
The NCERT states, 'The adult echinoderms are radially symmetrical but larvae are bilaterally symmetrical.' This highlights the dual symmetry observed in their life cycle.
What is the primary function of the water vascular system in Echinodermata?
The NCERT explicitly mentions, 'The most distinctive feature of echinoderms is the presence of water vascular system which helps in locomotion, capture and transport of food and respiration.'
Which of the following organ systems is notably absent in Echinodermata?
The text states, 'An excretory system is absent' in Echinodermata.
In Echinodermata, where is the mouth typically located?
The NCERT describes the digestive system as 'complete with mouth on the lower (ventral) side and anus on the upper (dorsal) side.'
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.
Ready to ace NEET?
Free access · No credit card required
Yes. You can attempt every Zoology question on this page for free without logging in, and check the correct answer with a detailed explanation instantly.
No account is required to attempt questions and view answers. A free account adds bookmarks, personal notes, and progress tracking.
The bank mixes NEET previous year questions (PYQs) with practice questions, each tagged with its exam appearances where applicable.