Exam Paper: Structure and Function of Invertebrates

Instructions: Answer all questions. Each question carries equal marks.

Section A: Multiple Choice Questions

1. Which of the following is not an invertebrate? a) Jellyfish b) Snail c) Spider d) Fish

2. Which of the following is a characteristic of all invertebrates? a) They have a backbone b) They have an exoskeleton c) They have a closed circulatory system d) They have a complex nervous system

3. Which of the following is not a phylum of invertebrates? a) Arthropoda b) Mollusca c) Chordata d) Echinodermata

4. Which of the following is not a function of the exoskeleton in arthropods? a) Protection b) Support c) Movement d) Gas exchange

5. Which of the following is not a type of symmetry found in invertebrates? a) Radial symmetry b) Bilateral symmetry c) Asymmetry d) Spherical symmetry

Section B: Short Answer Questions

1. Describe the structure and function of the water vascular system in echinoderms.

2. Explain the difference between complete and incomplete metamorphosis in insects.

3. Describe the structure and function of the mantle in mollusks.

4. Explain the role of the nervous system in invertebrates.

5. Describe the structure and function of the excretory system in flatworms.

Section C: Essay Questions

1. Compare and contrast the structure and function of the exoskeleton in arthropods and the shell in mollusks.

2. Discuss the importance of invertebrates in the ecosystem.

3. Explain the process of regeneration in starfish and planarians.

4. Describe the structure and function of the digestive system in insects.

5. Discuss the adaptations that have allowed invertebrates to survive and thrive in a variety of environments.