Classification of Animals

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  1.  All animals, including humans, belong to the kingdom Animalia.
  2. Animals that depend on plants and other animals for food are known as heterotrophs.
  3. The backbone is also called the vertebral column.
  4. Animals with a backbone are called vertebrates.
  5. Animals without a backbone are called invertebrates.
  6. Invertebrates are divided into eight major phyla.
  7. Coelenterates have a radially symmetrical body.
  8. The tentacles in cnidarians have stinging cells called cnidoblasts.
  9. Earthworms are considered as a farmer's friend.
  10. Flatworms are the simplest worms or animals without legs.
  11. Annelids have special organs called nephridia for excretion.
  12. Exoskeleton is a rigid external covering of the body found in some invertebrates that provide support and protection.
  13. In arthropods, an image is formed in several pieces. This type of vision is called mosaic vision.
  14. Echinoderms have an unsegmented body.
  15. Octopus is the largest among invertebrates.
  16. Young frogs called tadpoles breathe through gills.
  17. The vertebral column is made up of several separate bones called vertebrae.
  18. All vertebrates have a well-developed closed circulatory system.
  19. Amphibians can live both on land and in water.
  20. The amphibians have evolved from fish.
  21. The amphibians' heart is three chambered.
  22. A crocodile has a four-chambered heart.
  23. Aves have a four-chambered heart.
  24. Duck-billed platypus is a mammal but lays eggs.
  25. Humans belong to class Mammalia.
  26. Charles Darwin was the first to describe evolution in his book 'The Origin of Species'.
  27. Mammals are the most evolved class.
  28. About 97% of all animals on earth are invertebrates. True
  29. Invertebrates were the first animals to evolve on earth. True
  30. Each cut segment of a Hydra grows into a new, full Hydra. True
  31. Tapeworms can grow up to 15 to 30 feet (10 m). True
  32. All vertebrates have a brain. True
  33. Fishes are cold-blooded animals. True
  34. Amphibians are cold-blooded animals. True
  35. Reptiles are cold-blooded animals. True
  36. Aves (feathered animals) are warm blooded animals. True
  37. Mammals are warm-blooded animals. True
  38. What are the common characteristics of animals?
    a) They cannot make their own food.
    b) They can move from one place to another.
    c) They stop growing after a certain period of time.
  39. Name the two major groups of animals on the basis of the presence or absence of backbone.
    a) Vertebrates
    b) Invertebrates
  40. Name the three regions of the body of arthropoda.
    a) Head
    b) Thorax
    c) Abdomen
  41. Arthropods are divided into four subgroups. Name them.
    a) Arachnida
    b) Crustacea
    c) Myriapods
    d) Insects
  42. Differentiate between vertebrates and invertebrates.
    a) Vertebrates have an internal skeleton. Invertebrates don't.
    b) Backbone is present, but absent in invertebrates.
    c) Nerve cord is hollow, but solid in invertebrates.
    d) Have 2 pairs of limbs, but invertebrates have 3 or more pairs.
    e) Heart is on the ventral side, but on dorsal side in invertebrates.
  43. Differentiate between amphibians and reptiles.
    a) Skin is thin and moist. Skin is covered with horny epidermal scales.
    b) Have three-chambered heart. Have a four-chambered heart.
    c) Respiration through gills or lungs. Respiration through lungs.
  44. Give examples of poriferans (phylum porifera - sponges).
    a) Sycon
    b) Leucosolenia
    c) Spongilla
  45. Give examples of cnidarians (phylum coelenterata).
    a) Hydra
    b) Jellyfish
    c) Corals
    d) Sea anemone
  46. Give examples of flatworms (phylum platyhelminthes).
    a) Tapeworms
    b) Planaria
    c) Liver fluke
  47. Give examples of roundworms (phylum nematoda or aschelminthes).
    a) Pinworm
    b) Ascaris
    c) Whipworm
  48. Give examples of annelids (phylum annelida - segmented worms).
    a) Earthworm
    b) Leech
  49. Give examples of phylum echinodermata.
    a) Starfish
    b) Brittle Star
    c) Sea Urchin
  50. Give examples of pisces.
    a) Seahorse
    b) Carp
    c) Shark
    d) Ray fish
    e) Pomfret
    f) Eel
    g) Rohu
  51. Give examples of amphibians.
    a) Salamander
    b) Frog
    c) Toad
  52. Give examples of reptiles.
    a) Snakes
    b) Lizards
    c) Turtles
    d) Tortoises
    e) Alligators
    f) Crocodiles
  53. Give examples of aves.
    a) Sparrow
    b) Crow
    c) Parakeet
    d) Ostrich
  54. Why are earthworms considered as a farmer's friend?
    Because they help to improve the fertility of soil.
  55. Define evolution.
    Evolution is the way in which living beings change and develop over millions of years.

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