Question

Hola! mate

how do plants obtain food ?
why do plants need nitrogen?
how do plants obtain nitrogen ?.​

Answer 1

1) Plants obtain food by the process of photosynthesis .

2) Plants need nitrogen for growth . Nitrogen is the main constituent of protein which leads to growth , Nitrogen is the main building block of the plant and also is found in plant cell walls and protoplasm .

3) Plants obtain nitrogen from the soil through the dissolved salts which they collect by the roots .

MORE INFO :

↪ Plants activate their ATP molecules by the help of sunlight and then they convert the absorbed carbon dioxide and water to liberate oxygen and prepare food .

↪ Plants have roots which are used to fix the plant to the soil and also collect water and minerals from the soil .

↪ The mineral salts and water get into the plant by the process of osmosis .

↪ The cell membrane of the root hairs are selectively permeable and they help in absorbing specific nutrients from the soil .

Answer 2

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▪️ Plants make food in their leaves. The leaves contain a pigment called chlorophyll, which colors the leaves green. Chlorophyll canmake food the plant can use from carbon dioxide, water, nutrients, and energy from sunlight. During the process of photosynthesis, plants release oxygen into the air.

▪️ Nitrogen is so vital because it is a major component of chlorophyll, the compound by which plants use sunlight energy to produce sugars from water and carbon dioxide (i.e., photosynthesis). It is also a major component of amino acids, the building blocks of proteins. Without proteins, plants wither and die.

▪️ Plants take nitrogen from the soil by absorption through their roots as amino acids, nitrate ions, nitrite ions, or ammonium ions. 

HOPE IT HELPS YOU !!