Free Kingdom Animalia MCQs with Answers

581. The largest group in the animal kingdom is:

• A. Arthropoda
• B. Mammals
• C. Mollusca
• D. Nematodes

Explanation: Correct, as this phylum includes insects, crustaceans, and arachnids, making it the largest animal group.

582. The different members of colonies in coelenterates that perform different functions are:

• A. Workers
• B. Drones
• C. Zooplanktons
• D. Zooids

Explanation: Correct, because coelenterates like corals and siphonophores have specialized individuals called zooids that perform different functions.

583. Fasciola, an endoparasite in sheep, is mostly found in:

• A. Blood of sheep
• B. Large intestine of sheep
• C. Liver and bile duct of sheep
• D. Stomach of sheep

Explanation: Liver and bile duct of sheep - Correct. Fasciola hepatica (liver fluke) resides in the liver and bile ducts, causing liver rot.

584. Animals having jointed legs and a chitinous exoskeleton are known as:

• A. Chordates
• B. Arthropods
• C. Annelida
• D. Mollusca

Explanation: Arthropods - Correct. Arthropods, such as insects, crustaceans, and arachnids, have jointed appendages and a chitinous exoskeleton.

585. In frogs, new air is drawn into the buccopharyngeal cavity through the nostrils, and old air is retained under pressure in:

• A. Lungs
• B. Nasal
• C. Glottis
• D. Trachea
• E. Nostrils

Explanation: The correct answer is A Lungs. In frogs, the process of respiration involves the use of both the nostrils and the lungs. When a frog breathes, new air is drawn into the bucco-pharyngeal cavity (the oral cavity and pharynx) through the nostrils. From there, the air moves into the lungs for gas exchange.

586. Class turbellaria, trematoda and cestoda belong to phylum:

• A. Echinodermata
• B. Porifera
• C. Aschelminthes
• D. Cnidaria
• E. Platyhelminthes

Explanation: The correct answer is Platyhelminthes. Option E The classes Turbellaria, Trematoda, and Cestoda belong to the phylum Platyhelminthes. Platyhelminthes, commonly known as flatworms, is a phylum of invertebrates characterized by their flattened body shape. The class Turbellaria includes free-living flatworms that are often found in freshwater or marine environments.

587. Achatina fulica Is an giant snail that is dangerous:

• A. For agricultural pest
• B. For silk worm
• C. For paper industry
• D. For sericulture pest

Explanation: Achatina fulica Is a giant snail that is a dangerous agricultural pest. So Option A is the correct answer.

588. Water vascular system or ambulacral system is a unique and complex system specially present in?

• A. Sponges
• B. Arthropods
• C. Echinoderms
• D. Fishes

Explanation: Echinoderms, which include organisms like starfish, sea urchins, and sea cucumbers, possess a unique and complex system called the water vascular system or ambulacral system. This system consists of a network of fluid-filled canals and appendages called tube feet, which are used for locomotion, feeding, and respiration.

589. Round worms belong to which phylum?

• A. Annelida
• B. Coelenterata
• C. Nematoda
• D. Platyhelminthes

Explanation: Roundworms belong to the phylum Nematoda. Roundworms, also known as nematodes, are unsegmented, cylindrical worms that can be found in a wide range of habitats. They are one of the most abundant diverse animal groups on Earth.

590. Silver fish is a/an?

• A. Insect
• B. Mollusc
• C. Jawless fish
• D. Cartilaginous fish

Explanation: Silverfish is an insect. It is a small, wingless insect with a silver-gray color and a distinctive fish-like shape.