everyday science MCQ #3076

Which of the following has no blood, but respires?

everyday science MCQ #3076

  1. Question 1

    Q1. Which of the following has no blood, but respires?

    • A) Cockroach
    • B) Earthworm
    • C) Fish
    • D) Hydra

    Answer: Hydra

    Explanation: Hydra is a tiny aquatic animal that has no circulatory system (no blood) but performs gas exchange (respiration) by simple diffusion through its body wall.