Plant system

March 25, 2024

Q. What is the effect of transpiration pull?

Ans. Transpiration pull creates a suction force, drawing water from roots to leaves. This process facilitates nutrient absorption and maintains plant hydration.

Q. Write down the word equation for photosynthesis?

Ans. Carbon dioxide + water → glucose + oxygen

Q. Drive an equation to show how plants break down food to produce food to energy during respiration. Also describe the importance of respiration in our lives.

Ans. Plants break down food molecules through the process of cellular respiration, primarily using the equation:

$�_{6} �_{12} �_{6} + 6 �_{2} \to 6 � �_{2} + 6 �_{2} � + Energy$

This equation demonstrates how glucose (food) and oxygen are converted into carbon dioxide, water, and energy in the form of ATP (adenosine triphosphate).

Cellular respiration is crucial for both plants and animals, as it provides the energy necessary for various life processes. In plants, it powers metabolic activities such as growth, reproduction, and nutrient transport. Additionally, during photosynthesis, plants produce glucose, which is then used in respiration to generate energy.

In our lives, respiration is vital for human survival. Our cells require a constant supply of energy to perform essential functions like muscle contraction, nerve impulse transmission, and maintaining body temperature. Without respiration, cells wouldn't have the energy needed for these activities, leading to organ failure and ultimately death. Thus, respiration ensures the continuity of life processes, enabling organisms to thrive and function effectively.

Q. Predict what will happen if plants do not get nitrogen and magnesium. How can we provide them with these minerals?

Ans. If plants do not receive sufficient nitrogen, they will exhibit stunted growth, yellowing of leaves (chlorosis), and reduced overall vigor. Nitrogen is a crucial component of chlorophyll, the pigment responsible for photosynthesis, so its deficiency significantly impacts a plant's ability to produce energy. Without magnesium, plants would also experience chlorosis, as magnesium is a central component of the chlorophyll molecule. Additionally, magnesium plays a role in various enzymatic reactions within the plant.

To provide plants with nitrogen and magnesium, fertilizers can be used. Nitrogen-rich fertilizers such as ammonium nitrate or urea can be applied to the soil to supplement nitrogen levels. For magnesium supplementation, magnesium sulfate (Epsom salt) can be dissolved in water and applied as a foliar spray or added to the soil. Additionally, ensuring healthy soil with adequate organic matter can also help improve nutrient availability to plants.

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