निम्नलिखित में से कौन-सा सेट जीवों का उनके संबंधित प्राथमिक श्वसन अंगों के साथ सही मिलान दर्शाता है? (A) केंचुआ - (I) गलफड़े (Gills) (B) तिलचट्टा - (III) श्वासप्रणाल तंत्र (Tracheal system) (C) डॉल्फिन - (IV) फेफड़े (Lungs) (D) घोंघा - (II) त्वचा (Skin)

The function of gills in fish is to:

When human beings inhale air during respiration, which of the following movements does NOT take place?

Which of the following statements are true in the context of respiration in whales and dolphins? (A) They cannot use dissolved oxygen. (B) They have gills. (C) They have blowholes (nostrils). (D) They often come up to the water surface to breathe.