Animal Kingdom Chapter-Wise Test 14

Correct answer Carries: 4.

Wrong Answer Carries: -1.

Which of the following features is incorrect about bony fishes (Osteichthyes)?

They have a bony endoskeleton
They have a two-chambered heart
They lack an operculum
They use a swim bladder for buoyancy
3

Bony fishes have an operculum (gill cover) to protect their gills.

Why are reptiles considered the first true terrestrial vertebrates?

They have an aquatic larval stage
They possess an amniotic egg
They rely on cutaneous respiration
They exhibit external fertilization
2

Reptiles were the first vertebrates to lay amniotic eggs, which allowed them to reproduce without returning to water.

Which of the following groups of animals is exclusively marine?

Echinodermata
Annelida
Arthropoda
Platyhelminthes
1

All echinoderms, such as starfish and sea urchins, are exclusively marine animals.

Which of the following characteristics is incorrect about mammals?

They are warm-blooded
They possess a diaphragm for respiration
They have a three-chambered heart
They have heterodont dentition
3

Mammals have a four-chambered heart, which ensures complete separation of oxygenated and deoxygenated blood.

Which of the following statements about mammals is correct?

All mammals give birth to live young
They have a diaphragm for respiration
They are ectothermic animals
They have three-chambered hearts
2

Mammals have a diaphragm, a unique muscle that aids in respiration.

Which of the following animals is a living fossil?

Periplaneta
Limulus
Asterias
Octopus
2

Limulus (King Crab) is considered a living fossil due to its primitive characteristics that have remained unchanged over millions of years.

Which of the following is a characteristic feature of mammals?

Presence of feathers
Lungs with air sacs
Mammary glands
Cloaca
3

Mammals are distinguished by the presence of mammary glands, which produce milk for their young.

Which of the following statements is true regarding locomotion in annelids?

They use jointed appendages for movement
They move using muscular contraction and setae
They have specialized wings for flying
They rely solely on cilia for movement
2

Annelids move by contracting longitudinal and circular muscles along with the help of setae (bristles) for traction.

Which of the following adaptations is seen in freshwater fishes for osmoregulation?

Excreting concentrated urine
Drinking seawater continuously
Excreting large amounts of dilute urine
Absorbing excess salts from the surrounding water
3

Freshwater fishes excrete large amounts of dilute urine to prevent excess water accumulation and maintain osmotic balance.

Which excretory organ is found in crustaceans?

Malpighian tubules
Green glands
Nephridia
Flame cells
2

Crustaceans, such as crabs and prawns, have green glands for excretion.

Performance Summary

Score:

Category Details
Total Attempts:
Total Skipped:
Total Wrong Answers:
Total Correct Answers:
Time Taken:
Average Time Taken per Question:
Accuracy:
0