Zoology MCQs
Topic Notes: Zoology
MCQs and preparation resources for competitive exams, covering important concepts, past papers, and detailed explanations.
Plato
- Biography: Ancient Greek philosopher (427–347 BCE), student of Socrates and teacher of Aristotle, founder of the Academy in Athens.
- Important Ideas:
- Theory of Forms
- Philosopher-King
- Ideal State
1
The integument of many invertebrates is characterized by which type of epidermal structure?
Answer:
single layered
In most invertebrates, the epidermis is typically composed of a single layer of epithelial cells. This simple epithelial structure is often responsible for secreting protective cuticles or mucus, facilitating gas exchange, and providing a barrier against the external environment while maintaining physiological homeostasis.
2
In which of the following organisms is the cuticle characterized as thin and elastic?
Answer:
rotifers
Rotifers possess a specialized body covering known as a lorica or a thin, flexible cuticle that allows for body contraction and movement. Unlike the thick, chitinous exoskeletons found in insects or arachnids, the cuticle of rotifers is notably thin and elastic, facilitating their characteristic swimming and creeping locomotion in aquatic environments.