give a brief note on nutrition in plants
Answers
Answer: hi!!
Plants prepare their food by using raw materials like water, carbon dioxide and minerals.
The process of utilization of food by a living organism to obtain energy is called nutrition.
Autotrophs or Autotrophic: - In this mode of nutrition organisms make their food themselves from simple substances. All green plants are Autotrophs (Auto means self and trophos means nourishment)
Heterotrophs or heterophobic: - Heterotrophic organisms are those who obtain food from other organisms. Since these organisms depend on other organisms for their food, they are called consumers. All animals and non-green plants like fungi come under this category.
Photosynthesis
Photosynthesis is food making process in plants from simple substances like carbon dioxide and water in the presence of sunlight.
photosynthesis definition
Oxygen is released during photosynthesis.
The process of photosynthesis can be represented as:
process of photosynthesis
The process of photosynthesis takes place in the green leaves of a plant.
The food is prepared by the green leaves of a plant in the form of a simple sugar called glucose.
The extra glucose is changed into another food called starch. This starch is stored in the leaves of the plant.
The green plants convert sunlight energy into chemical energy by making carbohydrates.
The photosynthesis takes place in the following three steps:
Absorption of sunlight energy by chlorophyll.
Conversion of light energy into chemical energy, and splitting of water into hydrogen and oxygen by light energy.
Reduction of carbon dioxide by hydrogen to form carbohydrate like glucose by utilizing the chemical energy.
Conditions necessary for photosynthesis:
The conditions necessary for photosynthesis to take place are:
Sunlight
Chlorophyll
Carbon dioxide
Water
Raw materials for photosynthesis:
The raw materials for photosynthesis are:
Carbon dioxide
Water
How the plants obtain carbon dioxide?
Nutretion in plants
There are a large number of tiny pores called stomata on the surface of the leaves of plants.
The carbon dioxide gas enters the leaves of the plant through the stomata present on their surface.
Each stomatal pore is surrounded by a pair of guard cells. The opening and closing of stomatal pores is controlled by the guard cells.
How the plants obtain water for photosynthesis:
The water required by the plants for photosynthesis is absorbed by the root of the plants from the soil through the process of osmosis.
The water absorbed by the roots of the plants is transported upward through the xylem vessels to the leaves where it reaches the photosynthetic cells.
The plants also need other raw materials such as nitrogen, phosphorus, iron and magnesium, etc., for building their body.
The plants take these materials from the soil.
Nitrogen is essential element used by the plants to make proteins and other compound.
Site of photosynthesis: Chloroplasts
Photosynthesis takes place in the leaves of the plants.
Leaves have green pigment called chlorophyll
It helps leaves capture the energy of the sunlight which is then used to prepare food from carbon di oxide and water.
Here, you see that solar energy is captured by the leaves and is stored in the plant in the form of food.
So, we can say that Sun is ultimate source of energy for all living organisms.
Answer:
Plants prepare their food by using raw materials like water, carbon dioxide and minerals. The process of utilization of food by a living organism to obtain energy is called nutrition. ... They prepare their own food by a process called photosynthesis.
Explanation:
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