Animal Kingdom Chapter-Wise Test 20

Correct answer Carries: 4.

Wrong Answer Carries: -1.

Which of the following statements about echinoderms is correct?

They have an open circulatory system
They are triploblastic and coelomate
They have an exoskeleton of chitin
They exhibit bilateral symmetry in adults
2

Echinoderms are triploblastic, coelomate animals with a water vascular system.

Which of the following statements about reptiles is incorrect?

They are poikilothermic (cold-blooded)
They possess a diaphragm for respiration
Their skin is dry and lacks glands
They lay shelled eggs
2

Reptiles do not have a diaphragm; their breathing is dependent on rib movements.

Which of the following animals belongs to class Reptilia?

Hyla
Ichthyophis
Chelone
Neophron
3

Chelone (turtle) belongs to class Reptilia, which is characterized by dry, cornified skin with epidermal scales.

Which phylum includes animals with an open circulatory system?

Annelida
Chordata
Arthropoda
Echinodermata
3

Arthropods have an open circulatory system where the blood directly bathes organs in a hemocoel.

Which of the following statements about birds is incorrect?

They have pneumatic (hollow) bones
They excrete urea as their primary nitrogenous waste
They have a four-chambered heart
They are oviparous
2

Birds are uricotelic, meaning they excrete uric acid, not urea.

Which of the following statements about platyhelminthes is incorrect?

They are acoelomate
They have flame cells for excretion
They possess a complete digestive system
They show bilateral symmetry
3

Platyhelminthes have an incomplete digestive system, meaning they have only one opening for ingestion and egestion.

Which of the following features is incorrect about mammals?

They have a diaphragm for respiration
They have a three-chambered heart
They possess heterodont dentition
They are warm-blooded
2

Mammals have a four-chambered heart, not a three-chambered one.

Which of the following animals is correctly matched with its mode of reproduction?

Pavo - Oviparous
Panthera leo - Oviparous
Hyla - Viviparous
Ascaris - Asexual reproduction
1

Pavo (peacock) is an oviparous bird, meaning it lays eggs.

Which of the following characteristics is common to both amphibians and reptiles?

Three-chambered heart
Presence of hair or fur
Internal fertilization in all species
Warm-blooded nature
1

Both amphibians and most reptiles have a three-chambered heart, except crocodiles, which have a four-chambered heart.

Which of the following is an example of an animal with a hydrostatic skeleton?

Earthworm
Frog
Snake
Shark
1

Earthworms have a hydrostatic skeleton, where fluid-filled compartments provide support and aid in movement.

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