Animal Kingdom Chapter-Wise Test 15

Correct answer Carries: 4.

Wrong Answer Carries: -1.

Which of the following statements about reptiles is correct?

They possess an exoskeleton
They lay amniotic eggs
They undergo external fertilization
They have a diaphragm for respiration
2

Reptiles lay amniotic eggs, which help protect the embryo from desiccation.

Which of the following classes has members that are exclusively aquatic?

Amphibia
Reptilia
Pisces
Mammalia
3

All members of the class Pisces (fishes) are exclusively aquatic.

Which of the following is an example of a cartilaginous fish?

Labeo
Hippocampus
Pristis
Catla
3

Pristis (Sawfish) belongs to class Chondrichthyes and has a cartilaginous skeleton.

Which of the following statements about birds (Aves) is correct?

They have a three-chambered heart
They are poikilothermic (cold-blooded)
They have a lightweight skeleton with pneumatic bones
They have an incomplete double circulation
3

Birds have pneumatic (hollow) bones, which make them lightweight and aid in flight.

Which of the following characteristics is incorrect regarding amphibians?

They respire through lungs, skin, and gills at different stages
They are cold-blooded (ectothermic)
They lay shelled eggs
They have a three-chambered heart
3

Amphibians lay non-shelled eggs, typically in water, unlike reptiles and birds, which lay shelled eggs.

Which of the following statements about fishes is incorrect?

Cartilaginous fishes lack an operculum
Bony fishes possess a swim bladder
All fishes have external fertilization
Cartilaginous fishes have a cartilaginous skeleton
3

Some fishes, such as sharks (cartilaginous fishes), exhibit internal fertilization, not external.

Which of the following features is incorrect regarding amphibians?

They have a three-chambered heart
They undergo metamorphosis
They lay hard-shelled eggs
They exhibit external fertilization in most species
3

Amphibians lay soft, jelly-like eggs, not hard-shelled eggs, which are a feature of reptiles and birds.

Which of the following statements about cartilaginous fishes (Chondrichthyes) is correct?

They have a bony endoskeleton
They possess a swim bladder
They lack an operculum
They have a three-chambered heart
3

Cartilaginous fishes lack an operculum (gill cover), which is present in bony fishes (Osteichthyes).

Which of the following statements about urochordates is incorrect?

They are exclusively marine
The notochord is present throughout life
They undergo metamorphosis
They have a cellulose-like covering called the tunic
2

In urochordates, the notochord is present only in the larval stage, not throughout life.

Which of the following features is a major evolutionary advantage of vertebrates over invertebrates?

Presence of an open circulatory system
Jointed appendages
Well-developed endoskeleton
Hydrostatic skeleton
3

Vertebrates evolved a well-developed endoskeleton that provides structural support, protection, and efficient movement.

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