Animal Kingdom Chapter-Wise Test 8

Correct answer Carries: 4.

Wrong Answer Carries: -1.

Which of the following statements about amphibians is incorrect?

They have a three-chambered heart
They are poikilothermic (cold-blooded)
They exclusively respire through lungs
They have a dual mode of life, living in water and on land
3

Amphibians respire through lungs, skin (cutaneous respiration), and gills (in the larval stage), not exclusively through lungs.

Which of the following is a correct feature of reptiles?

They have moist, glandular skin
They excrete ammonia as their primary nitrogenous waste
They lay amniotic eggs
They have a four-chambered heart in all species
3

Reptiles lay amniotic eggs, which provide protection and a stable environment for the developing embryo.

Which of the following groups has a closed circulatory system?

Echinodermata
Arthropoda
Annelida
Mollusca
3

Annelids, such as earthworms, have a closed circulatory system where blood flows inside vessels.

Which structure in amphibians allows them to hear airborne sounds?

Lateral line system
Tympanum
Spiracles
Operculum
2

The tympanum in amphibians functions as an external ear structure, detecting airborne sound vibrations.

Which of the following animals is viviparous?

Pavo
Macaca
Chelone
Psittacula
2

Macaca (monkey) is a mammal and is viviparous, meaning it gives birth to live young.

Which of the following statements about reptiles is incorrect?

They have a three-chambered heart, except crocodiles
They have moist, glandular skin
They are ectothermic (cold-blooded)
They excrete uric acid as their primary nitrogenous waste
2

Reptiles have dry, cornified skin that lacks glands, which helps in preventing water loss.

Which phylum exhibits indirect development with a trochophore larval stage?

Annelida
Echinodermata
Arthropoda
Platyhelminthes
1

Many annelids exhibit indirect development with a free-swimming trochophore larval stage.

Which of the following is a distinguishing characteristic of phylum Hemichordata?

Notochord present throughout life
Body divided into proboscis, collar, and trunk
Jointed appendages
Water vascular system
2

Hemichordates have a body divided into three regions: proboscis, collar, and trunk.

Which of the following is an example of an oviparous mammal?

Macropus
Ornithorhynchus
Felis
Canis
2

Ornithorhynchus (platypus) is an oviparous mammal, meaning it lays eggs instead of giving birth to live young.

Which of the following features is incorrect regarding echinoderms?

They have an endoskeleton made of calcareous ossicles
They have a closed circulatory system
They show radial symmetry in adults
They use a water vascular system for locomotion
2

Echinoderms do not have a closed circulatory system; they rely on their water vascular system for circulation.

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