Q. Which of the following statements is/are correct?
1. Dolphins and Whales breathe through blowholes.
2. Earthworm breathe through their skin.
Select the correct answer from the code given below :
a) Only 2
b) Neither 1 nor 2
c) Both 1 and 2
d) Only 1
Correct Answer: c) Both 1 and 2
Question from UPPSC Prelims 2025
Explanation:
Statement 1 is correct: Dolphins and whales (cetaceans) are mammals that breathe atmospheric air through blowholes—modified nostrils located on top of the head. Toothed whales (including dolphins) have a single blowhole; baleen whales have two. They do not extract oxygen from water.
Statement 2 is correct: Earthworms lack lungs or gills and respire through their moist, vascularized skin by diffusion (cutaneous respiration).
