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__________ is responsible for maintaining the current of water in sponge.

A. Osculum

B. Porocytes

C. Spongocoel

D. Choanocytes

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  1. The given figures A, B, C and D are the examples of first true land vertebrates. They are dominant in…
  2. Which of the follwoing statement(s) is/are correct?(i) Organ systems in different group of animals show…
  3. Which of the following animals are bilaterally symmetrical?
  4. Identify the figures and select the correct option 
  5. Which of the following statements (i - v) are correct ?(i) The pelvic fins of female sharks bear claspers.(ii)…
  6. Which of the following statements (i v) are incorrect?(i) Parapodia are lateral appendages in arthropods…
  7. Refer the figures A, B, C and D given below. Which of the following options shows the correct name of…
  8. Refer the types of cells present in some animals. Each cell is specialized to perform a single specific…
  9. Identify the animals shown in the given figures A, B and C from options given below. 
  10. In amphibians, heart is ________ chambered.
  11. Which of the following is not the common fundamental feature for animal classification?
  12. In phylum arthropoda, excretion takes place through
  13. Which of the following statements is incorrect ?
  14. Which of the following is not a characteristic of phylum echinodermata ?
  15. Identify the figures A, B and C and choose the correct option. 
  16. Which of the following phylum is being described by the given statements?(i) These are primitive multicellular…
  17. Which one of the following groups of animals is correctly matched with its characteristic feature without…
  18. Aquatic annelids (like Nereis) possess lateral appendages called ______________, which help in swimming.
  19. Which of the following traits is not shared by both sea anemones and jellyfish ?
  20. Polyp phase is absent in
  21. Which of the following class is being described by the given statements (i - iv)?(i) They are found…
  22. The transition from aquatic to terrestrial lifestyles required many adaptations in the vertebrate lineage.…
  23. Which of the following is a connecting link between invertebrates and non-invertebrates?
  24. Which of the following is an incorrect statement regarding flatworms ?
  25. Which of the following group of animals reproduces only by sexual means?
  26. Read the following statements and answer the question.(i) They are exclusively marine, radially symmetrical,…
  27. Match the phylum given in column - I with their example given in column - II and choose the correct…
  28. When any plane passing through the central axis of the body divides the organism into two identical…
  29. Which of the following belong to phylum arthropoda?
  30. A student brought home a strange animal which he found outside under a rock. It had moist skin, a complete…