Animal Kingdom Chapter-Wise Test 24

Correct answer Carries: 4.

Wrong Answer Carries: -1.

Which of the following features is found in phylum Arthropoda?

Water vascular system
Parapodia
Jointed appendages
Cnidoblasts
3

Arthropods are characterized by jointed appendages, which provide mobility and functionality.

Which of the following is the primary function of the radula in Mollusca?

Reproduction
Excretion
Locomotion
Feeding
4

The radula is a rasping, file-like structure in mollusks used for scraping and ingesting food.

Which characteristic differentiates Osteichthyes from Chondrichthyes?

Presence of cartilaginous skeleton
Gill slits without operculum
Presence of an air bladder
Predatory nature
3

Osteichthyes (bony fishes) have an air bladder to regulate buoyancy, whereas Chondrichthyes lack this feature.

Which of the following animals exhibits radial symmetry in the adult stage?

Ascaris
Starfish
Planaria
Earthworm
2

Starfish, an echinoderm, exhibits radial symmetry in its adult stage, whereas its larval stage shows bilateral symmetry.

Which of the following animals belongs to phylum Mollusca?

Sycon
Limulus
Pinctada
Ascaris
3

Pinctada (pearl oyster) belongs to phylum Mollusca, which is characterized by a soft body and a calcareous shell.

Which of the following statements about annelids is incorrect?

They exhibit metameric segmentation
They have a closed circulatory system
They use Malpighian tubules for excretion
They have setae for locomotion
3

Annelids do not have **Malpighian tubules**; they use **nephridia** for excretion.

Which of the following statements about vertebrates is correct?

All vertebrates have jaws
Vertebrates include both jawless and jawed organisms
All vertebrates are warm-blooded
Vertebrates lack a notochord during embryonic development
2

Vertebrates include both jawless (Cyclostomata) and jawed (Gnathostomata) animals.

Which of the following statements about fishes is correct?

All fishes have a bony endoskeleton
Cartilaginous fishes have gill slits but no operculum
Bony fishes lack a swim bladder
All fishes use lungs for respiration
2

Cartilaginous fishes **lack an operculum** and instead have **gill slits** for respiration.

Which of the following structures is unique to echinoderms?

Parapodia
Water vascular system
Malpighian tubules
Radula
2

Echinoderms possess a unique water vascular system, which aids in locomotion, food capture, and respiration.

Which of the following animals lacks an excretory system?

Frog
Cockroach
Starfish
Ascaris
3

Echinoderms, such as starfish, lack a specialized excretory system and rely on diffusion for waste removal.

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