F. Answer the following in detail.
1. How do the roots of plants absorb water?
2. What do you understand by active transportation of minerals?
3. Explain the relationship between absorption and transpiration.
4. How does the food manufactured in the leaves reach different parts of the plant?
5. Give two points of importance of transpiration in plants.
6. Differentiate between macro-nutrients and micro-nutrients with examples.
Answers
Answer:
1)Plants absorb water from the soil by osmosis. They absorb mineral ions by active transport, against the concentration gradient
2)Active transport refers to a process where molecules have to move against a concentration gradient. Unlike passive transport, this process requires energy.
3) Transpiration decreases the hydrostatic pressure in the upper parts of plant creating transpiration pull due to which water easily move against gravity from roots to upper parts. Water absorbed in the root move upward due to this transpiration pull and capillary actio
4)Stems carry water and nutrients taken up by the roots to the leaves. Then the food produced by the leaves moves to other parts of the plant. The cells that do this work are called the xylem cells. ... The phloem cells move the food.
5)Cools the surface of the leaves. Helps in growth and development. It controls the temperature of the plants. Allows the movement of minerals from the soil to different parts of the plant.
6)Macronutrients are big picture nutrition categories, such as carbohydrates, fats, and proteins. Micronutrients are smaller nutritional categories, such as individual vitamins and minerals like calcium, zinc, and vitamin B-6. You may have heard the phrase “counting macros” at some point.
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