Which of the following is correct for the common cockroach?

Biology · Class 11 · CBSEStructural Organisation in Animals

Which of the following is correct for the common cockroach?
  1. Malpighian tubules are excretory organs projecting out from the colon.
  2. Oxygen is transported by haemoglobin in blood.
  3. Nitrogenous excretory product is urea.
  4. The food is ground by mandibles and gizzard.

Answer

(D) The food is ground by mandibles and gizzard.

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