Search any question & find its solution
Question:
Answered & Verified by Expert
Assertion : In cockroach respiratory gases directly comes in contact with the various organs of the body.
Reason : Cockroaches do not have respiratory pigment.
Options:
Reason : Cockroaches do not have respiratory pigment.
Solution:
1321 Upvotes
Verified Answer
The correct answer is:
If both assertion and reason are true and reason is the correct explanation of assertion
The blood of cockroach, also called as haemolymph is a mobile connective tissue composed of corpuscles and a colourless fluid, the plasma. It does not contain any respiratory pigment and therefore plays no role in respiration.
Respiratory organs of cockroach are spiracles, tracheae and tracheoles. The respiratory system consists of a network of trachea, that open through 10 pairs of small holes called spiracles present on the lateral side of the body. Thin branching tubes carry oxygen from the air to all the parts. The opening of the spiracles is regulated by the sphincters. Exchange of gases take place at the tracheoles by diffusion.
Respiratory organs of cockroach are spiracles, tracheae and tracheoles. The respiratory system consists of a network of trachea, that open through 10 pairs of small holes called spiracles present on the lateral side of the body. Thin branching tubes carry oxygen from the air to all the parts. The opening of the spiracles is regulated by the sphincters. Exchange of gases take place at the tracheoles by diffusion.
Looking for more such questions to practice?
Download the MARKS App - The ultimate prep app for IIT JEE & NEET with chapter-wise PYQs, revision notes, formula sheets, custom tests & much more.