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
Vertebrates are classified as members of which biological phylum?
Answer:
chordata
Vertebrates belong to the phylum Chordata. This phylum is characterized by the presence of a notochord, a dorsal hollow nerve cord, pharyngeal slits, and a post-anal tail at some stage of their development. Vertebrates are a subphylum within Chordata defined by the development of a vertebral column.
2
The notochord is a flexible, supportive rod located immediately ventral to which structure in chordate embryos?
Answer:
neural tube
The notochord is a defining characteristic of the phylum Chordata. During embryonic development, it serves as a primary skeletal support structure. It is positioned longitudinally along the dorsal axis of the body, situated directly beneath the developing neural tube, which eventually forms the central nervous system.