D. Answer the following questions in brief.
1.
Why is nutrition important for a living organism
2.
How do green plants synthesise their food?
State the role of vessels' present in a plant.
3.
4.
Define the following terms:
(a) Symbiotic relationship
(b) Nutrients
(c) Saprotrophic mode of nutrition (d) Photosynthesis
When some wheat dough was left in the open for a few days, it started emitting
a foul smell. State, why?
5.
Answers
Answer:
1. Nutrition is important for a living organisms because it provide components for development maintaining and survive.
2. Green plants synthesize their food with the help of carbon dioxide, water and presence of sunlight and chlorophyll.
3. Water and Minerals are transported to other parts of the plants that run throughout the root, the stem.
4. SYMBIOTIC RELATIONSHIP- Organisms which live in close association that is beneficial to both.
NUTRIENTS- Carbohydrates, proteins, fats, vitamins and minerals are all important components of our food. These components of food are necessary for our body and are called nutrients.
SAPROTROPHIC MODE OF NUTRITION- Organisms which feed on dead and decaying matter.
PHOTOSYNTHESIS- The process by which green plants make their own food is called photosynthesis.
5. Because bacteria started coming to the wheat dough
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