Question

Q.What are spiracles?​

Answer 1

Answer:

Spiracles are openings or tiny pores on the surface of some animals, which usually lead to respiratory systems. In a cockroach, respiration occurs through spiracles – a small opening on the sides of its body.

Explanation:

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Answer 2

• The aperture in the exoskeletons of insects and certain spiders that allows air into the trachea is known as a spiracle or stigma.
• The tracheal tubes of insects' respiratory systems are responsible for delivering oxygen straight into the tissues of the animals.
• To cut down on water loss, the spiracles may be opened and closed quickly. Closer muscles around the spiracle are contracted to do this.
• The muscle relaxes in order to open up. The central nervous system regulates the nearby muscle, but it can also respond to localized chemical inputs.
• To prevent water from entering the trachea, some aquatic insects use comparable or alternate closure mechanisms.
• The duration and timing of spiracle closures can have an impact on the organism's breathing rates.
• Hairs may also surround spiracles to reduce bulk air flow and consequently water loss.