Animal Kingdom Chapter-Wise Test 17

Correct answer Carries: 4.

Wrong Answer Carries: -1.

Which class of vertebrates possesses a three-chambered heart with incomplete separation of ventricles?

Amphibia
Reptilia (except crocodiles)
Aves
Mammalia
2

Reptiles (except crocodiles) have a three-chambered heart with incomplete separation of ventricles.

Which of the following is an incorrect statement about Osteichthyes?

They have a bony endoskeleton
Their heart is three-chambered
They possess an operculum over the gills
They use a swim bladder for buoyancy
2

Osteichthyes (bony fishes) have a two-chambered heart, not a three-chambered one.

Which of the following animals belongs to class Cyclostomata?

Scoliodon
Petromyzon
Labeo
Hippocampus
2

Petromyzon (lamprey) is a jawless fish belonging to class Cyclostomata.

Which of the following is a correct feature of reptiles?

They have a three-chambered heart, except crocodiles
They have a moist, glandular skin
They excrete urea as their primary nitrogenous waste
They are warm-blooded animals
1

Most reptiles have a three-chambered heart, while crocodiles have a four-chambered heart.

Which of the following statements about arthropods is incorrect?

They have an exoskeleton made of chitin
They have an open circulatory system
They have a water vascular system
They possess jointed appendages
3

Arthropods do not have a water vascular system; this feature is found in echinoderms.

Which of the following animals possesses a segmented body but lacks jointed appendages?

Earthworm
Cockroach
Spider
Crab
1

Earthworms belong to phylum Annelida and exhibit true segmentation but do not have jointed appendages like arthropods.

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

Labeo
Hippocampus
Scoliodon
Catla
3

Scoliodon (dogfish) is a cartilaginous fish belonging to class Chondrichthyes.

Which of the following statements about sponges (Porifera) is correct?

Sponges exhibit tissue-level organization
Sponges have a gastrovascular cavity
Sponges possess a water canal system for filter-feeding
Sponges have bilateral symmetry
3

Sponges use a water canal system to filter food particles from water. They lack tissues and exhibit cellular-level organization.

Which of the following characteristics is incorrect about mammals?

They have a diaphragm for respiration
They are cold-blooded
They have a four-chambered heart
They possess mammary glands
2

Mammals are warm-blooded (homeothermic), not cold-blooded.

What type of body cavity is found in Aschelminthes?

Acoelomate
Pseudocoelomate
Coelomate
Hemocoelomate
2

Aschelminthes (roundworms) are pseudocoelomates, meaning their body cavity is partially lined with mesoderm.

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