Plant Nutrition MCQ Test
Q1: What is nutrition?
Answer: A) The process of intake and utilization of food by the body
Q2: Why is nutrition important for living organisms?
Answer: B) It is essential for performing life activities
Q3: What are the two modes of nutrition in plants?
Answer: B) Autotrophic and Heterotrophic
Q4: What are the raw materials used in photosynthesis?
Answer: B) Water and carbon dioxide
Q5: What conditions are required for photosynthesis?
Answer: B) Sunlight, chlorophyll, and open stomata
Q6: Which structures in the plant are involved in photosynthesis?
Answer: B) Leaves and roots
Q7: What is the word equation for photosynthesis?
Answer: B) Carbon dioxide + Water —(Sunlight & Chlorophyll)—> Glucose + Oxygen
Q8: What is autotrophic nutrition?
Answer: B) The process of making food from simple substances like carbon dioxide and water
Q9: Why are plants called producers?
Answer: B) They produce their own food through photosynthesis
Q10: How does photosynthesis occur in autotrophs?
Answer: B) By converting carbon dioxide and water into glucose and oxygen using sunlight and chlorophyll
Q11: What is photosynthesis?
Answer: A) The process by which green plants use sunlight to synthesize foods from carbon dioxide and water
Q12: Why are leaves green?
Answer: A) Due to chlorophyll containing green pigment
Q13: How do leaves capture the maximum amount of sunlight?
Answer: D) By facing the sun
Q14: Why keep the plant in the dark during the experiment to demonstrate the necessity of sunlight for photosynthesis?
Answer: B) To destarch the leaves
Q15: Why do we boil the leaf in alcohol during the photosynthesis experiment?
Answer: B) To remove chlorophyll
Q16: Why does the uncovered part of the leaf turn blue-black during the photosynthesis experiment?
Answer: B) Because it contains starch
Q17: What is chlorophyll?
Answer: A) A green pigment in chloroplasts, crucial for photosynthesis
Q18: Where does photosynthesis occur besides leaves?
Answer: C) In other green parts like stems and branches
Q19: What is the role of stomata in photosynthesis?
Answer: B) They allow carbon dioxide in and oxygen out of the leaf
Q20: How are water and minerals transported in plants?
Answer: B) Through xylem
Q21: What if there were no plants for photosynthesis on Earth?
Answer: B) Life as we know it would not exist
Q22: What is the purpose of the activity involving plants named Normy, Greeny, Sunny, Airy, and Watty?
Answer: B) To show that chlorophyll, sunlight, water, and carbon dioxide are necessary for photosynthesis
Q23: What condition was Sunny exposed to in the experiment?
Answer: B) Sunlight
Q24: What does a positive starch test indicate in the photosynthesis experiment?
Answer: B) The presence of starch
Q25: Why do red leaves have less chlorophyll?
Answer: A) They have more red pigment
Q26: What is saprotrophic nutrition?
Answer: A) When organisms feed on decaying organic matter
Q27: Which mode of nutrition can be compared to a total parasite?
Answer: C) Parasitic
Q28: What is a symbiotic relationship in plants?
Answer: C) When plants live in a mutually beneficial relationship with another organism
Q29: Why do farmers grow leguminous crops alternatively with other crops?
Answer: B) To enrich the soil with nitrogen
Q30: What are heterotrophic organisms?
Answer: B) Organisms that rely on others for their nutrition
Q31: What do parasitic plants do?
Answer: C) They live on and derive nutrients from other plants
Q32: How do saprophytic plants obtain nutrients?
Answer: C) They feed on dead and decaying organic matter
Q33: Why do insectivorous plants feed on insects?
Answer: B) To obtain nitrogen
Q34: Can insectivorous plants prepare their own food?
Answer: B) Yes, they can prepare their own food through photosynthesis
Q35: What is the common feature of parasitic and saprotrophic plants?
Answer: B) Both feed on other organisms
Q36: What is the main purpose of photosynthesis in plants?
Answer: B) To produce food
Q37: What pigment is responsible for trapping sunlight in plants?
Answer: A) Chlorophyll
Q38: How do plants obtain nitrogen for protein synthesis?
Answer: B) From the soil through nitrogen-fixing bacteria
Q39: What is the role of Rhizobium bacteria in leguminous plants?
Answer: B) To fix atmospheric nitrogen into soluble compounds
Q40: What is the significance of chlorophyll in photosynthesis?
Answer: C) It traps solar energy
Q41: What happens if the stomata on leaves are blocked?
Answer: B) Photosynthesis will be negatively affected
Q42: Why are legumes important in agriculture?
Answer: B) They enrich soil with nitrogen
Q43: What type of relationship do lichens exhibit?
Answer: B) Symbiotic
Q44: Why do plants need nitrogen?
Answer: B) For protein synthesis
Q45: What is the function of xylem in plants?
Answer: B) To transport water and minerals
Q46: Why do insectivorous plants capture insects?
Answer: B) To obtain nitrogen
Q47: What is the main product of photosynthesis?
Answer: C) Glucose
Q48: How do leguminous plants benefit from Rhizobium bacteria?
Answer: B) They get nitrogen
Q49: What is the main role of chlorophyll in photosynthesis?
Answer: C) To trap sunlight
Q50: Why is sunlight important for photosynthesis?
Answer: A) It provides energy
Q51: What is the role of stomata during photosynthesis?
Answer: B) They allow carbon dioxide to enter and oxygen to exit
Q52: What is heterotrophic nutrition?
Answer: B) When organisms obtain food from other organisms
Q53: What are the raw materials for photosynthesis?
Answer: B) Carbon dioxide and water
Q54: What is the main product of photosynthesis in plants?
Answer: D) Glucose
Q55: What is autotrophic nutrition in plants?
Answer: B) Making food from simple substances like carbon dioxide and water
Q56: Why are plants considered producers?
Answer: B) They produce their own food through photosynthesis
Q57: What is the function of chlorophyll in plants?
Answer: C) To trap sunlight
Q58: Why do plants need sunlight?
Answer: C) To provide energy for photosynthesis
Q59: What does the experiment with covered and uncovered leaves demonstrate?
Answer: C) That sunlight is necessary for photosynthesis
Q60: What is the role of xylem in plants?
Answer: B) To transport water and minerals
Q61: What is the role of Rhizobium bacteria in leguminous plants?
Answer: B) To fix atmospheric nitrogen into soluble compounds
Q62: What is saprotrophic nutrition?
Answer: A) When organisms feed on decaying organic matter
Q63: What is symbiotic nutrition in plants?
Answer: C) When plants live in a mutually beneficial relationship with another organism
Q64: Why do farmers grow leguminous crops alternatively with other crops?
Answer: B) To enrich the soil with nitrogen
Q65: What are heterotrophic organisms?
Answer: B) Organisms that rely on others for their nutrition
Q66: What do parasitic plants do?
Answer: C) They live on and derive nutrients from other plants
Q67: How do saprophytic plants obtain nutrients?
Answer: C) They feed on dead and decaying organic matter
Q68: Why do insectivorous plants feed on insects?
Answer: B) To obtain nitrogen
Q69: Can insectivorous plants prepare their own food?
Answer: B) Yes, they can prepare their own food through photosynthesis
Q70: What is the common feature of parasitic and saprotrophic plants?
Answer: B) Both feed on other organisms
Q71: What is the main purpose of photosynthesis in plants?
Answer: B) To produce food
Q72: What pigment is responsible for trapping sunlight in plants?
Answer: A) Chlorophyll
Q73: How do plants obtain nitrogen for protein synthesis?
Answer: B) From the soil through nitrogen-fixing bacteria
Q74: What is the role of Rhizobium bacteria in leguminous plants?
Answer: B) To fix atmospheric nitrogen into soluble compounds
Q75: What is the significance of chlorophyll in photosynthesis?
Answer: C) It traps solar energy
Q76: What happens if the stomata on leaves are blocked?
Answer: B) Photosynthesis will be negatively affected
Q77: Why are legumes important in agriculture?
Answer: B) They enrich soil with nitrogen
Q78: What type of relationship do lichens exhibit?
Answer: B) Symbiotic
Q79: Why do plants need nitrogen?
Answer: B) For protein synthesis
Q80: What is the function of xylem in plants?
Answer: B) To transport water and minerals
Q81: Why do insectivorous plants capture insects?
Answer: B) To obtain nitrogen
Q82: What is the main product of photosynthesis?
Answer: C) Glucose
Q83: How do leguminous plants benefit from Rhizobium bacteria?
Answer: B) They get nitrogen
Q84: What is the main role of chlorophyll in photosynthesis?
Answer: C) To trap sunlight
Q85: Why is sunlight important for photosynthesis?
Answer: A) It provides energy
Q86: What does the experiment with covered and uncovered leaves demonstrate?
Answer: C) That sunlight is necessary for photosynthesis
Q87: What is the role of xylem in plants?
Answer: B) To transport water and minerals
Q88: What is the role of Rhizobium bacteria in leguminous plants?
Answer: B) To fix atmospheric nitrogen into soluble compounds
Q89: What is saprotrophic nutrition?
Answer: A) When organisms feed on decaying organic matter
Q90: What is symbiotic nutrition in plants?
Answer: C) When plants live in a mutually beneficial relationship with another organism
Q91: Why do farmers grow leguminous crops alternatively with other crops?
Answer: B) To enrich the soil with nitrogen
Q92: What are heterotrophic organisms?
Answer: B) Organisms that rely on others for their nutrition
Q93: What do parasitic plants do?
Answer: C) They live on and derive nutrients from other plants
Q94: How do saprophytic plants obtain nutrients?
Answer: C) They feed on dead and decaying organic matter
Q95: Why do insectivorous plants feed on insects?
Answer: B) To obtain nitrogen
Q96: Can insectivorous plants prepare their own food?
Answer: B) Yes, they can prepare their own food through photosynthesis
Q97: What is the common feature of parasitic and saprotrophic plants?
Answer: B) Both feed on other organisms
Q98: What is the main purpose of photosynthesis in plants?
Answer: B) To produce food
Q99: What pigment is responsible for trapping sunlight in plants?
Answer: A) Chlorophyll
Q100: How do plants obtain nitrogen for protein synthesis?
Answer: B) From the soil through nitrogen-fixing bacteria