CBSE Science Class 7
Nutrition in Plants
Nutrition in Plants - Chapter Wise CBSE Solved Question and Answer Based On NCERT
Very Short Q&A
Q1: Name some components of food.
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Ans:
Carbohydrates, proteins, fats, vitamins and minerals.
Q2: Define nutrients.
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Ans:
Carbohydrates, proteins, fats, vitamins and minerals are essential components of food, these components are called nutrients.
Q3: Give an example of autotrophs.
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Q4: Give an example of heterotrophs.
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Ans:
Animals and human beings.
Q5: Plants prepare their food by using raw materials present in __________________.
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Q6: What do you mean by nutrition?
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Ans:
Nutrition is the mode of taking food by an organism and its utilisation by body.
Q7: Name the food factories of plants.
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Q8: Name the tiny pores present on the surface of leaves.
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Q9: Name the green pigment present in leaves.
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Q10: ____________ helps leaves to capture the energy of sunlight
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Q11: Why photosynthesis is named so?
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Ans:
Because the synthesis of food occurs in presence of sunlight.
Q12: Sun is the ultimate source of energy for all living organisms. True / False
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Q13: Where does the nucleus of cell lies?
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Ans:
In the centre of cell.
Q14: State the equation for the process of photosynthesis.
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Ans:
Carbon dioxide + water —————> carbohydrate + Oxygen
Q15: The nucleus in a cell is surrounded by a jelly like substance called ___________.
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Q16: Why algae present in stagnant water bodies are green in colour?
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Ans:
because they contain green colour pigment chlorophyll
Q17: Name a component of food other than carbohydrate synthesise by plants.
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Q18: Name some insectivorous plants.
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Ans:
Pitcher plants and Venus flytraps are insectivorous plants
Q19: In saprotrophic mode of nutrition organisms take in nutrients from
- Oxygen mask
- Water mask
- Pollution mask
- None of these
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Q20: During photosynthesis plants take in _______________ and releases _______________.
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Ans:
Carbon dioxide and oxygen
Q21: Some organisms live together and share shelter and nutrients, this type of relationship is called
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Ans:
Symbiotic relationship.
Q22: Lichen is a symbiotic association between __________ and fungi.
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Q23: Name the edible fungi.
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Q24: Name the organism responsible for converting atmospheric nitrogen into soluble forms.
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Q25: Where we can see Rhizobium bacteria?
- Dead matter
- Decaying matter
- Both a and b
- None of these
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Ans:
In root nodules of gram, peas, moong, beans and other leguminous plants.
Q26: Give an example of parasites.
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Q27: Give an example of saprotrophs.
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Q28: Amarbel is an example of
- Parasite
- Host
- Autotrophs
- Saprotrophs
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Q29: Carbon dioxide is released during photosynthesis. True/ False.
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Q30: During photosynthesis solar energy is converted into chemical energy. True/ False.
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Q31: The product of photosynthesis is
- Carbohydrate
- Protein
- Fats
- All of these
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Q32: Name a plant that has both autotrophic and heterotrophic mode of nutrition.
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Ans:
Insectivorous plants
Q33: Name a parasitic plant with yellow, slender and tubular type of stem.
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Q34: Name the pores present in leaves through which exchange of gas takes place.
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Q35: Animals are autotrophs. True/ False.
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