Animal Kingdom Chapter-Wise Test 16

Correct answer Carries: 4.

Wrong Answer Carries: -1.

Which class of vertebrates has cartilaginous endoskeletons?

Osteichthyes
Chondrichthyes
Amphibia
Reptilia
2

Chondrichthyes, such as sharks and rays, have a cartilaginous endoskeleton.

Which of the following animals uses book lungs for respiration?

Cockroach
Spider
Earthworm
Fish
2

Spiders and scorpions (Arachnida) possess book lungs for respiration, which are made up of thin, leaf-like structures.

Which of the following features is incorrect regarding birds?

They are poikilothermic (cold-blooded)
They have a four-chambered heart
They possess pneumatic (hollow) bones
They are oviparous (egg-laying)
1

Birds are homeothermic (warm-blooded), not poikilothermic (cold-blooded).

Which of the following statements about Chondrichthyes is correct?

They have a bony endoskeleton
They possess an operculum over the gills
Their notochord persists throughout life
They have a swim bladder for buoyancy
3

Chondrichthyes (cartilaginous fishes) retain their notochord throughout life as part of their skeletal structure.

Which structure in molluscs is responsible for secreting the shell?

Radula
Mantle
Parapodia
Notochord
2

The mantle in molluscs is a soft tissue layer that secretes the calcareous shell.

What is the primary function of Malpighian tubules in insects?

Respiration
Excretion
Locomotion
Reproduction
2

Malpighian tubules are excretory structures in insects that help in the removal of metabolic waste.

Which of the following phyla is characterized by the presence of cnidoblasts?

Porifera
Cnidaria
Platyhelminthes
Annelida
2

Cnidarians possess cnidoblasts, which contain nematocysts used for capturing prey and defense.

Which of the following animals belongs to the phylum Arthropoda?

Pila
Limulus
Asterias
Hirudinaria
2

Limulus (King crab) belongs to phylum Arthropoda and is considered a living fossil.

Which of the following features is incorrect regarding cartilaginous fishes (Chondrichthyes)?

They have a cartilaginous endoskeleton
They possess an operculum over the gills
They lack a swim bladder
They have a two-chambered heart
2

Cartilaginous fishes lack an operculum; instead, they have gill slits for respiration.

Which of the following characteristics is incorrect regarding birds?

They have pneumatic bones
They are oviparous
They have a diaphragm for respiration
They have a four-chambered heart
3

Birds lack a diaphragm; they respire using air sacs connected to their lungs.

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