Animal Kingdom Chapter-Wise Test 11

Correct answer Carries: 4.

Wrong Answer Carries: -1.

What type of circulatory system is found in arthropods?

Closed circulatory system
Open circulatory system
Double circulatory system
Water vascular system
2

Arthropods have an open circulatory system, where blood directly bathes tissues and organs.

Which of the following statements about cartilaginous fishes is incorrect?

They have a two-chambered heart
They have placoid scales
They possess a swim bladder
They lack an operculum
3

Cartilaginous fishes lack a swim bladder, which is present in bony fishes for buoyancy control.

Which of the following is incorrect about mammals?

They possess mammary glands
They are homeothermic (warm-blooded)
All mammals give birth to live young
They have a diaphragm for respiration
3

Not all mammals give birth to live young. Monotremes (e.g., platypus) lay eggs.

Which of the following features is incorrect about birds?

They have pneumatic (hollow) bones
They excrete urea
They are oviparous
They have a four-chambered heart
2

Birds are uricotelic, meaning they excrete uric acid, not urea.

Which of the following statements about sponges is incorrect?

They have a cellular level of organization
They exhibit external fertilization
They possess a nerve net for coordination
They use choanocytes for filter-feeding
3

Sponges do not possess a nervous system or a nerve net. Their body functions are regulated by the water canal system.

Which of the following statements about reptiles is incorrect?

They have dry, cornified skin with epidermal scales
They lay eggs with leathery shells
All reptiles have a four-chambered heart
They are poikilothermic (cold-blooded)
3

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

Which of the following statements about mammals is correct?

All mammals have placental development
They possess mammary glands for nourishing their young
They are exclusively terrestrial
They excrete uric acid as their primary nitrogenous waste
2

Mammary glands are a defining feature of mammals, used to produce milk for their young.

Which of the following levels of organization is exhibited by sponges?

Tissue level
Organ level
Cellular level
Organ system level
3

Sponges exhibit a cellular level of organization where cells are arranged as loose aggregates without forming tissues.

Which of the following is a characteristic feature of arthropods?

Water vascular system
Jointed appendages
Parapodia
Flame cells
2

Arthropods are characterized by jointed appendages, an exoskeleton, and segmented bodies.

Which of the following groups has an endoskeleton composed of calcareous ossicles?

Mollusca
Arthropoda
Echinodermata
Platyhelminthes
3

Echinoderms have an endoskeleton made of calcareous ossicles, which provides support and protection.

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