Animal Kingdom – Basis of Classification (Short Questions Only)

1. Why is classification of animals necessary?
2. What is the basis of animal classification?
3. What is cellular level of organisation?
4. Which phylum shows cellular level of organisation?
5. What is tissue level of organisation?
6. Which animals show tissue level of organisation?
7. What is organ level of organisation?
8. Which phylum first shows organ level of organisation?
9. What is organ system level of organisation?
10. Which animals show organ system level of organisation?
11. What is an incomplete digestive system?
12. What is a complete digestive system?
13. What is an open circulatory system?
14. What is a closed circulatory system?
15. What is symmetry?
16. What is asymmetry?
17. Which animals are asymmetrical?
18. What is radial symmetry?
19. Name animals with radial symmetry.
20. What is bilateral symmetry?
21. Name animals with bilateral symmetry.
22. What are diploblastic animals?
23. Name the germ layers in diploblastic animals.
24. What is mesoglea?
25. Give an example of diploblastic animals.
26. What are triploblastic animals?
27. Name the three germ layers.
28. What is a coelom?
29. What are coelomates?
30. Give examples of coelomates.
31. What are pseudocoelomates?
32. Give an example of pseudocoelomates.
33. What are acoelomates?
34. Give an example of acoelomates.
35. What is metamerism?
36. What is segmentation?
37. Give an example of metameric segmentation.
38. What is a notochord?
39. What are chordates?
40. What are non-chordates? Fill in the blanks
Animal Kingdom – Basis of Classification
(Fill in the Blanks)
1. Animals with loosely arranged cells exhibit __________ level of organisation.
2. __________ is the phylum that shows cellular level of organisation.
3. In coelenterates, cells are organised into __________.
4. Platyhelminthes exhibit __________ level of organisation.
5. Annelids, Arthropods and Chordates show __________ level of organisation.
6. A digestive system with only one opening is called an __________ digestive system.
7. A digestive system having both mouth and anus is called a __________ digestive system.
8. In an open circulatory system, blood directly bathes the __________.
9. In a closed circulatory system, blood flows through __________.
10. Sponges are mostly __________.
11. Animals whose bodies can be divided into equal halves by any plane through the central axis show __________ symmetry.
12. Coelenterates exhibit __________ symmetry.
13. Animals whose bodies can be divided into equal right and left halves in only one plane show __________ symmetry.
14. Annelids and Arthropods exhibit __________ symmetry.
15. Animals having two germ layers are called __________ animals.
16. The two germ layers of diploblastic animals are __________ and __________.
17. The layer present between ectoderm and endoderm in diploblastic animals is called __________.
18. Animals having three germ layers are called __________ animals.
19. The third germ layer present in triploblastic animals is __________.
20. The body cavity lined by mesoderm is called __________.
21. Animals possessing a true coelom are called __________.
22. Annelids, Molluscs and Arthropods are examples of __________.
23. A body cavity not lined by mesoderm is called __________.
24. Animals possessing a pseudocoelom are called __________.
25. Aschelminthes are __________ animals.
26. Animals lacking a body cavity are called __________.
27. Platyhelminthes are __________ animals.
28. The external and internal division of the body into segments is called __________.
29. The phenomenon of segmentation is known as __________.
30. Earthworm shows __________ segmentation.
31. Notochord is a __________-derived rod-like structure.
32. Notochord is formed on the __________ side of the body.
33. Animals possessing a notochord are called __________.
34. Animals without a notochord are called __________.
35. Porifera, Coelenterata and Echinodermata are examples of __________.
36. The body cavity lies between the body wall and the __________ wall.
37. Blood vessels include arteries, veins and __________.
38. The arrangement of body parts into equal halves is known as __________.
39. Chordates possess a __________ during embryonic development.
40. The basis of animal classification includes organisation, symmetry, coelom, segmentation and __________
MCQs
1. Which phylum exhibits cellular level of organisation?
A) Coelenterata B) Porifera C) Annelida D) Arthropoda 2. Tissue level of organisation is found in:
A) Porifera B) Coelenterata C) Platyhelminthes D) Chordata 3. Organ level of organisation first appears in:
A) Porifera B) Coelenterata C) Platyhelminthes D) Arthropoda 4. Organ system level of organisation is seen in:
A) Porifera B) Coelenterata C) Platyhelminthes D) Annelida 5. An incomplete digestive system has:
A) Mouth only B) Anus only C) One opening only D) Two openings 6. A complete digestive system has:
A) One opening B) Two openings C) No opening D) Three openings 7. In an open circulatory system, blood:
A) Flows only in arteries B) Flows only in veins C) Directly bathes tissues D) Remains inside capillaries 8. Closed circulatory system is characterised by:
A) Absence of blood vessels B) Blood flowing through vessels C) Absence of heart D) Open sinuses only 9. Sponges are generally:
A) Bilateral B) Radial C) Asymmetrical D) Spherical 10. Radial symmetry is found in:
A) Earthworm B) Cockroach C) Hydra D) Human 11. Bilateral symmetry is found in:
A) Hydra B) Earthworm C) Sponge D) Starfish (adult) 12. Diploblastic animals possess:
A) One germ layer B) Two germ layers C) Three germ layers D) Four germ layers 13. The two germ layers of diploblastic animals are:
A) Ectoderm and Mesoderm B) Mesoderm and Endoderm C) Ectoderm and Endoderm D) Mesoglea and Mesoderm 14. The third germ layer in triploblastic animals is:
A) Mesoglea B) Mesoderm C) Ectoderm D) Endoderm 15. Coelom is:
A) A germ layer B) A body cavity lined by mesoderm C) A digestive organ D) A circulatory organ 16. Animals with a true coelom are called:
A) Acoelomates B) Pseudocoelomates C) Coelomates D) Diploblasts 17. Pseudocoelom is found in:
A) Annelida B) Mollusca C) Aschelminthes D) Platyhelminthes 18. Animals without a body cavity are:
A) Coelomates B) Acoelomates C) Pseudocoelomates D) Chordates 19. Which phylum is acoelomate?
A) Arthropoda B) Mollusca C) Platyhelminthes D) Annelida 20. Metameric segmentation is well developed in:
A) Earthworm B) Sponge C) Hydra D) Amoeba 21. Segmentation of the body into repeated units is called:
A) Symmetry B) Metamerism C) Coelomation D) Cephalisation 22. Notochord is derived from:
A) Ectoderm B) Endoderm C) Mesoderm D) Mesoglea 23. Notochord is present on the:
A) Ventral side B) Lateral side C) Dorsal side D) Posterior side 24. Animals possessing a notochord are called:
A) Non-chordates B) Coelenterates C) Chordates D) Poriferans 25. Which of the following is a non-chordate?
A) Fish B) Frog C) Earthworm D) Bird 26. Which of the following shows radial symmetry?
A) Cockroach B) Earthworm C) Hydra D) Human 27. Mesoglea is found between:
A) Mesoderm and Endoderm B) Ectoderm and Endoderm C) Coelom and Gut D) Notochord and Nerve Cord 28. Which of the following is triploblastic?
A) Hydra B) Sponge C) Planaria D) Obelia 29. The body cavity of pseudocoelomates is:
A) Completely lined by mesoderm B) Partially lined by mesoderm C) Not lined by mesoderm D) Absent 30. Which feature is used as a basis for animal classification?
A) Symmetry B) Coelom C) Notochord D) All of these