Nutrition in plants- Mcqs

Plant Nutrition MCQ Test

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

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