Practice free Classification of Animal Kingdom (Zoology) NEET multiple-choice questions online with instant answers and detailed explanations. No login required.
Which of the following pairs represents examples of the class Cyclostomata?
The NCERT book explicitly lists 'Examples: Petromyzon (Lamprey) and Myxine (Hagfish)' under the Class – Cyclostomata section.
All living members of the class Cyclostomata exhibit which of the following feeding behaviors?
The NCERT states, All living members of the class Cyclostomata are ectoparasites on some fishes. This directly answers the question.
Regarding the skeletal structure of Cyclostomata, which of the following is correct?
The NCERT mentions, Cranium and vertebral column are cartilaginous for Cyclostomata.
Which of the following statements about Cyclostomata's circulatory system is accurate?
The NCERT explicitly states, Circulation is of closed type for Cyclostomata.
After spawning, what is the fate of adult Cyclostomes?
The NCERT says, After spawning, within a few days, they die. This clearly describes the fate of adult cyclostomes post-spawning.
Cyclostomata belong to which division within Vertebrata?
The provided diagram and text state, Vertebrata is divided into Agnatha (lacks jaw) and Gnathostomata (bears jaw). Class 1. Cyclostomata falls under Agnatha.
Which of the following is a key distinguishing feature of Cyclostomata that separates them from Chondrichthyes?
Cyclostomata are jawless vertebrates ('without jaws'), whereas Chondrichthyes have jaws ('Their jaws are very powerful'). While both have gill slits, cartilaginous skeletons, and marine habitats (at least predominantly for Chondrichthyes), the presence or absence of jaws is a fundamental differentiator between Agnatha (which includes Cyclostomata) and Gnathostomata (which includes Chondrichthyes).
What happens to the larvae of Cyclostomes after metamorphosis?
The NCERT states, Their larvae, after metamorphosis, return to the ocean.
The body of Cyclostomes is described as:
The NCERT text specifies, They have an elongated body bearing 6-15 pairs of gill slits for respiration. Cyclostomes have a sucking and circular mouth without jaws. Their body is devoid of scales and paired fins.
Which of the following is a common feature shared by Cyclostomata and Chondrichthyes, based on the provided text?
For Cyclostomata, the NCERT states, Cranium and vertebral column are cartilaginous. For Chondrichthyes, it says, They are marine animals with streamlined body and have cartilaginous endoskeleton. Therefore, a cartilaginous endoskeleton is a shared feature. Placoid scales, ventrally located mouth, and operculum are characteristic of Chondrichthyes, not Cyclostomata.
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