JK Academy Std 5 EVS 2 Ch 3 Life on Earth Questions and Answers
3. Life on Earth Exercises: 1. Answer each question in one sentence. (a) What instrument do we need to see a unicellular organism? Ans. We need a microscope to see a unicellular organism. (b) Where did the protozoa appear first? Ans. It is believed that protozoa first appeared in water. 2. Answer the following in …