Basis of Animal Classification Practice Questions
20 free Basis of Animal Classification practice questions for the NCERT Biology, each with the correct answer and a detailed explanation. Open any question below, or take the full set as an interactive quiz.
Questions
20 questions
All Basis of Animal Classification questions
- Q1. Which of the following levels of organization is characterized by cells arranged as loose cell aggregates without forming tissues?
- Q2. In which phylum do cells performing the same function arrange into tissues for the first time?
- Q3. Animals in which the cells are arranged in two embryonic layers, an external ectoderm and an internal endoderm, are called:
- Q4. An undifferentiated layer, mesoglea, is present in between the ectoderm and the endoderm in:
- Q5. Radial symmetry is observed in which of the following phyla?
- Q6. When the body can be divided into identical left and right halves in only one plane, the symmetry is called:
- Q7. The body cavity which is lined by mesoderm is called:
- Q8. In some animals, the body cavity is not lined by mesoderm; instead, the mesoderm is present as scattered pouches. This is known as:
- Q9. Which of the following phyla is characterized by the absence of a body cavity (acoelomate condition)?
- Q10. Metameric segmentation (metamerism) is a characteristic feature of:
- Q11. The notochord is derived from which germ layer?
- Q12. Animals that do not possess a notochord are called non-chordates. This group includes phyla from:
- Q13. In an open circulatory system, the blood is:
- Q14. An incomplete digestive system has:
- Q15. Which of the following show organ-system level of organization?
- Q16. Choose the correct match regarding symmetry:
- Q17. Triploblastic animals possess three germ layers. These are:
- Q18. The presence of a true coelom allows for:
- Q19. Animals belonging to phylum Aschelminthes are:
- Q20. Which criterion is primarily used to distinguish between a Crab and an Earthworm at the 'basis of classification' level?