Classification of Animal World

1. What is the scientific name for a human, which consists of two parts?

• A) Animalia Chordata
• B) Homo sapiens
• C) Vertebrata Mammalia
• D) Human Being

2. Which of the following animals is an example of the phylum Porifera?

• A) Hydra
• B) Earthworm
• C) Spongilla
• D) Starfish

3. How does the primary mode of respiration in an adult amphibian on land differ from its larval stage (tadpole) in water?

• A) Adults use gills, while larvae use lungs.
• B) Adults use their skin, while larvae use gills.
• C) Adults use lungs, while larvae use gills.
• D) Both adults and larvae use only their skin for respiration.

4. Beyond simply identifying organisms, what is a primary scientific benefit of classification?

• A) To ensure every animal has a two-part Latin name.
• B) To count the exact number of individual animals in the world.
• C) To determine the interrelationships and systematic positions of organisms.
• D) To separate animals based only on their diet and habitat.

5. An animal that is exclusively marine, has a body divided into five equal parts, and uses a water-vascular system for movement belongs to which phylum?

• A) Cnidaria
• B) Mollusca
• C) Echinodermata
• D) Chordata

6. What is the key feature that distinguishes the sub-phylum Vertebrata from other chordates like Urochordata?

• A) The presence of a dorsal tubular nerve cord throughout life.
• B) The notochord is replaced by a vertebral column in the adult stage.
• C) They are all warm-blooded animals.
• D) They live exclusively in marine environments.

7. Which phylum is the largest in the animal kingdom?

• A) Mollusca
• B) Arthropoda
• C) Chordata
• D) Annelida