Life Processes (Nutrition)   Q and A Cbse Class 10 - Biology  Q1: Define Nutrition. Answer: The process of taking in food or consuming food and utilising it is called nutrition. Q2: What are the modes of nutrition? Answer: ① Autotrophic ② Heterotrophic Q3: What is a nutrient? Answer: A nutrient is a substance in food that performs a physiological function in the body. A nutrient