Food Chains, Food Webs and Trophic Levels MCQs
Practice Food Chains, Food Webs and Trophic Levels multiple-choice questions from Our Environment (Class 10 Science) - tap an answer for instant feedback and a step-by-step solution. Practice the full set free on the RankByte app.
Food Chains, Food Webs and Trophic LevelsQuiz - Solve & Score
Q1. What is the purpose of adding antioxidants to food materials?
- A.To speed up oxidation
- B.To slow down oxidation
- C.To change the smell and taste of the food
- D.To make the food poisonous
Answer: B. To slow down oxidation
What does the chapter say about this? Adding antioxidants is meant to slow down oxidation. Does that line up with one of the options? Yes - This is correct because adding antioxidants is meant to slow down oxidation. And the rest? option A) 'To speed up oxidation' doesn't hold - This is incorrect because adding antioxidants is meant to slow down oxidation; option C) 'To change the smell and taste of the food' misses the point - This is incorrect because adding antioxidants is not meant to change the smell and taste of the food. Pick: B) To slow down oxidation.
Q2. If too little saliva is secreted in the mouth, which digestion step is most directly affected?
- A.The breakdown of starch into sugar (maltose)
- B.The breakdown of proteins into amino acids
- C.The breakdown of fats into fatty acids
- D.The absorption of water in the large intestine
Answer: A. The breakdown of starch into sugar (maltose)
Q3. What is the phenomenon called in which harmful chemicals (like pesticides) become more and more concentrated at each higher level of a food chain?
- A.Biological magnification (biomagnification)
- B.Biodegradation
- C.Photosynthesis
- D.Eutrophication
Answer: A. Biological magnification (biomagnification)
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