what is the difference between spiracles and stomata
Spiracles are openings of the trachea in insects whereas stomata are openings between guard cells of plants. Spiracles are present on either side of the abdominal segments of insects whereas stomata are present randomly on the plant surface being more concentrated on the underside of leaves. Spiracles are guarded by valves whereas stomata are guarded by guard cells. Both are part of respiratory system and help in the intake of air.