Practice free Classification of Animal Kingdom (Zoology) NEET multiple-choice questions online with instant answers and detailed explanations. No login required.
In both sexes of cockroach, a pair of jointed filamentous structures called anal cerci are present on:
Anal cerci arise from the 10th abdominal segment in both male and female cockroaches.
The following are the statements about non-chordates:
A. Pharynx is perforated by gill slits. B. Notochord is absent. C. Central nervous system is dorsal. D. Heart is dorsal if present. E. Post anal tail is absent.
Choose the most appropriate answer from the options given below:
Non-chordates lack gill slits (A wrong) and have a ventral CNS (C wrong). B, D and E are correct.
Match List I with List II related to digestive system of cockroach:
| List I | List II |
|---|---|
| A. The structures used for storing of food. | I. Gizzard |
| B. Ring of 6-8 blind tubules at junction of foregut and midgut. | II. Gastric Caeca |
| C. Ring of 100-150 yellow coloured thin filaments at junction of midgut and hindgut. | III. Malpighian tubules |
| D. The structures used for grinding the food. | IV. Crop |
Choose the correct answer from the options given below:
Crop — food storage; gastric caeca — foregut/midgut junction; Malpighian tubules — midgut/hindgut junction; gizzard — grinding food.
While trying to find out the characteristic of a newly found animal, a researcher did the histology of adult animal and observed a cavity with presence of mesodermal tissue towards the body wall but no mesodermal tissue was observed towards the alimentary canal. What could be the possible coelome of that animal?
When the body cavity is not lined by mesoderm on the gut side (mesoderm present only as scattered pouches towards the body wall), the animal is a pseudocoelomate.
All living members of the class Cyclostomata are:
All living cyclostomes (e.g. lampreys) are ectoparasites on fishes.
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): All vertebrates are chordates but all chordates are not vertebrate.
Reason (R): The members of subphylum vertebrata possess notochord during the embryonic period; the notochord is replaced by a cartilaginous or bony vertebral column in adults.
Choose the correct answer:
Vertebrates are a subphylum of chordates, so all vertebrates are chordates but not vice versa (A true). Their embryonic notochord is replaced by a vertebral column (R true) — R explains why vertebrates are a specialised chordate group.
Role of the water vascular system in Echinoderms is: A. Respiration and Locomotion B. Excretion and Locomotion C. Capture and transport of food D. Digestion and Respiration E. Digestion and Excretion Choose the correct answer:
In echinoderms the water vascular system helps in locomotion, capture & transport of food and respiration — so the correct pair from the options is A (respiration & locomotion) and C (capture & transport of food).
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