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Which of the following statement(s) is/are correct regarding respiratory system of cockroach ?
  1. It consists of a network of trachea, that open through 12 pairs of small holes called spiracles present on the lateral side of the body.
  2. Thin branching tubes carry oxygen from the air to all the parts.
  3. The opening of the spiracles is regulated by sphincters.
  4. Exchange of gases take place at the tracheoles by diffusion.

A. Only (i)

B. (i), (ii) and (iii)

C. (ii), (iii) and (iv)

D. All of these

Please do not use chat terms. Example: avoid using "grt" instead of "great".

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  1. Which of the following type of tissue is being described by the given statements ?They are named because…
  2. Consider the following statements regarding cockroach and mark the correct option.Head is formed by…
  3. Match the terms given in column-I with their feature given in column-II and choose the correct option.Column-IColumn-II(Terms)(Features)A.…
  4. Which of the following types of connective tissue is mismatched with its matrix ?
  5. Which of the following statement(s) is/are correct regarding compound epithelium ?
  6. Nervous tissue cells that play several supporting roles but do not transmit impulses are called
  7. Gizzard (proventriculus) in cockroach lies between
  8. The mouth parts of cockroach are
  9. Which of the following statement(s) is/are correct about nervous system of cockroach ?It consists of…
  10. General function of gland is to
  11. Match the types of connective tissue given in column-I with their examples given column-II and choose…
  12. A student was given a specimen to identify on the basis of the characteristics given below.They are…
  13. Statement 1: Typhlosole increases the effective area of absorption in the intestine.Statement 2: Typhlosole,…
  14. The kind of epithelium which forms the inner walls of blood vessels is
  15. Figure given below shows reproductive system of female cockroach. The correct labellings indicated by…
  16. Which of the following type of cell junction is not found in animal tissues ?
  17. In cockroach, the testes are present in
  18. Match the description given in column I with their examples given in column II and choose the correct…
  19. Choose the correct sequence of alimentary canal of Cockroach
  20. Intercalated discs are the communication junctions between the cells of
  21. Non-ciliated simple columnar epithelium often contains _______, which increase the surface area for…
  22. The given figure shows the digestive system of cockroach with few structures marked as A, B, C and D.…
  23. The intercellular material of the given figure is solid and resists compression. Identify the figure…
  24. The major functions of loose connective tissue include
  25. Which of the following statements regarding frog is not correct?
  26. Cartilage tissues are likely to be slow in healing following an injury because
  27. The following figure shows the extarnal features of cockroach with few structures labelled as A, B,…
  28. The frog never drinks water but absorbs it through one of its respiratory organ. Identify the organ.
  29. Epithelial tissue is distinguished from connective tissue, muscular, or nervous tissue by its
  30. Which of the following statement(s) is/are correct regarding respiratory system of cockroach ?It consists…