Phylum Chordata - Classes of Vertebrates - UNSOLVED PRACTICE SET
Chapter: Diversity in Living Organisms | Topic: Phylum Chordata Classes of Vertebrates
PHYLUM CHORDATA - CLASSES OF VERTEBRATES - UNSOLVED PRACTICE SET
Topic: Phylum Chordata Classes of Vertebrates
Multiple Choice Questions
Q1. All vertebrates belong to the sub-phylum:
- Urochordata
- Cephalochordata
- Vertebrata
- Tunicata
Q2. Fishes are characterised by:
- Presence of feathers and wings
- Presence of scales, gills, and fins
- Presence of mammary glands
- Presence of dry, cornified skin
Q3. Amphibians can live:
- Only in water
- Only on land
- Both in water and on land
- Only in trees
Q4. Reptiles are characterised by:
- Presence of feathers
- Presence of mammary glands
- Dry, cornified skin with scales or scutes
- Presence of gills throughout life
Q5. Birds are the only animals that have:
- Four-chambered heart
- Feathers
- Warm blood
- Lungs
Short Answer Questions
Q6. List the five classes of vertebrates and give one example of each.
Q7. What are the main characteristics of mammals? Give TWO examples of mammals found in India.
Q8. Differentiate between amphibians and reptiles in terms of skin type, mode of respiration, and reproduction.
Q9. Why are birds considered modified reptiles? What evidence supports this evolutionary relationship?
Long Answer Questions
Q10. Describe the characteristics of the five classes of vertebrates (Pisces, Amphibia, Reptilia, Aves, Mammalia) in a tabular format. Include: habitat, body covering, mode of respiration, type of circulatory system, and reproduction.
Q11. Explain why mammals are considered the most advanced class of vertebrates. Discuss their adaptations for survival in various habitats.
APPLICATION / ANALYSIS
Q12. The Great Indian Bustard is a critically endangered bird found in the grasslands of Rajasthan and Gujarat.
(a) To which class does the Great Indian Bustard belong? List THREE characteristic features of this class.
(b) Why is this bird critically endangered? List TWO human activities that threaten its survival.
(c) A conservationist suggests captive breeding programs to save this species. What challenges might arise in breeding this bird in captivity? Explain.
Q13. During a visit to a zoo, a student observes various animals:
Animal A: Has scales, lays eggs on land, cold-blooded
Animal B: Has fur, gives birth to live young, nurses babies with milk
Animal C: Has feathers, lays eggs, warm-blooded, can fly
Animal D: Has moist skin, lives near water, undergoes metamorphosis
(a) Identify the class of each animal (A, B, C, D).
(b) Animal C (bird) and Animal A (reptile) both lay eggs. How do their eggs differ in structure and protection?
(c) A student argues: "Since birds and mammals are both warm-blooded, they should be in the same class." Do you agree? Give reasons.