Zoology MCQs for NEET — Practice Questions with Answers

The salient feature of Arthropoda is the presence of a chitinous exoskeleton and jointed appendages. This exoskeleton provides structural support and protection, while the jointed appendages allow for complex movements. These features are key to the success and diversity of the arthropod phylum, which includes insects, arachnids, and crustaceans.

The scientific name of a starfish is 'Asterias'. Starfish belong to the class Asteroidea within the phylum Echinodermata. They are known for their star-shaped body and ability to regenerate lost arms.

Echinoderms are a phylum of marine animals that include starfish, sea urchins, and sea cucumbers. They are exclusively found in marine environments.

In echinoderms, tube feet are small, flexible, hollow appendages used for locomotion, feeding, and respiration. They are part of the water vascular system.

Lateral line sense organs are a system of tactile sense organs found in aquatic vertebrates like fish and some amphibians, including the shark Scoliodon. They detect water movements and vibrations.

The limbless amphibian is Icthyophis. Limbless amphibians are commonly known as caecilians. They belong to the order Gymnophiona, and Icthyophis is a genus within this order. These amphibians are adapted to a burrowing lifestyle, which is why they have lost their limbs.

Among reptiles, the crocodile has a four-chambered heart. While most reptiles have a three-chambered heart, crocodiles have evolved a four-chambered heart similar to that of birds and mammals. This adaptation allows for more efficient separation of oxygenated and deoxygenated blood, which is beneficial for their active lifestyle.

The Python is a non-poisonous snake. Unlike snakes such as cobras, kraits, and vipers, which possess venom to subdue their prey, pythons are constrictors. They kill their prey by wrapping around it and suffocating it through constriction.

Ostrich, Emu, and Kiwi are all flightless birds. Ostriches are native to Africa, Emus are native to Australia, and Kiwis are native to New Zealand. They have evolved to lose the ability to fly and have adapted to terrestrial living.