1. Tardigrade
  2. Question
  3. Biology
  4. Which of the following statements is incorrect? I. Each Malpighian tubule in cockroach is lined by glandular and ciliated cells. II. Most of the species of cockroach are of no economical importance. III. Fat bodies in cockroach play an important role in reproduction. IV. The cockroach is ammonotelic in the rainy season.

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Q. Which of the following statements is incorrect?
I. Each Malpighian tubule in cockroach is lined by glandular and ciliated cells.
II. Most of the species of cockroach are of no economical importance.
III. Fat bodies in cockroach play an important role in reproduction.
IV. The cockroach is ammonotelic in the rainy season.

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Solution:

In a cockroach, excretion is performed by Malpighian tubules. Each tubule is lined by glandular and ciliated cells. They absorb nitrogenous waste products and convert them into uric acid which is excreted out through the hindgut. Therefore, this insect is called uricotelic. In addition, fat bodies, nephrocytes, and urecose glands also help in excretion.