Q 1: What are the nutrients other than carbohydrates which are required by plants?
Ans: Proteins and fats are the nutrients; other than carbohydrates; which are required by plants.
Q 2: In which form do plants absorb nitrogen?
Ans: Plants absorb soluble form of nitrogen.
Q 3: Why do farmers add nitrogenous fertilizers to the soil?
Ans: Farmers add nitrogenous fertilizers to the soil to fulfill the requirement of nitrogen of the plants. Nitrogen is necessary to synthesize proteins.
Q 4: Which microorganism help to provide nitrogen to the plants?
Ans: A certain type of bacteria called rhizobium helps to provide nitrogen to the plants.
Q 5: How do plants absorb nutrients other than carbohydrates from the soil?
Ans: Other nutrients are available in the soil in the form of minerals. Plants absorb these minerals from the soil; along with water.
Q 6: Fill in the blanks:
(a) Green plants are called __________ since they synthesize their own food.
(b) The foods synthesized by the plants are stored as __________.
(c) During photosynthesis solar energy is captured by the pigment called _________.
(d) During photosynthesis plants take in ____________ and release _________.
Ans:
(a) autotrophs
(b) starch
(c) chlorophyll
(d) carbon dioxide, oxygen
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