Home Photosynthesis and Respiration Photosynthesis and Respiration The relationship between photosynthesis and cellular respiration is such that the products of one system are the reactants of the other. Photosynthesis involves the use of energy from sunlight, water and carbon dioxide to produce glucose and oxygen.
Plants convert energy from sunlight into sugar in a process called photosynthesis. Photosynthesis uses energy from light to convert water and carbon dioxide molecules into glucose sugar molecule and oxygen Figure 2.
Simple equation describing the molecules required for photosynthesis and its products. There are several structures within a leaf that have important roles in the movement of nutrients and water throughout a plant.
Each plant contains a branched system of tubes called xylem, which is responsible for water transport from the roots where it is taken up to the leaves where it is used in photosynthesis. Water flows up from the roots, through the trunk and branches, to the leaves, where it is used in photosynthesis.
Alongside xylem is another system of tubes called phloem, which transports the glucose formed in photosynthesis into the branches, fruit, trunk and roots of the tree.
The ends of both the xylem and phloem transport systems can be seen within each leaf vein Photosysthesis respiration 3.
The structure of xylem and phloem in a plant is analogous to arteries and veins in humans, which move blood to and from the heart and lungs. For more information regarding the structure and function of xylem and phloem, review the Irrigation and Rootstock sections.
Leaves contain water which is necessary to convert light energy into glucose through photosynthesis.
Leaves have two structures that minimize water loss, the cuticle and stomata. The cuticle is a waxy coating on the top and bottom of leaves which prevents water from evaporating into the atmosphere Figure 3a. Although the cuticle provides important protection from excessive water loss, leaves cannot be impervious because they must also allow carbon dioxide in to be used in photosynthesisand oxygen out.
These gases move into and out of the leaf through openings on the underside called stomata Figure 3b. Respiration Photosynthesis is the process by which plants use light energy to convert carbon dioxide and water into sugars. The sugars produced by photosynthesis can be stored, transported throughout the tree, and converted into energy which is used to power all cellular processes.
Respiration occurs when glucose sugar produced during photosynthesis combines with oxygen to produce useable cellular energy. This energy is used to fuel growth and all of the normal cellular functions. Carbon dioxide and water are formed as by-products of respiration Figure 4.
Simple equation describing the molecules required for respiration and its products. Respiration occurs in all living cells, including leaves and roots. Since respiration does not require light energy, it can be conducted at night or during the day.
However, respiration does require oxygen which can be problematic for roots which are overwatered or in soils with poor drainage. If roots are inundated for long periods of time they cannot take up oxygen and convert glucose to maintain cell metabolic processes.
As a result, waterlogging and excessive irrigation can deprive roots of oxygen, kill root tissue, damage trees, and reduce yield.Respiration is the opposite of photosynthesis, and is described by the equation: C 6 H 12 O 6 +6O 2 > 6CO 2 +6H 2 O+36ATP Simply stated, this equation means that oxygen combines with sugars to break molecular bonds, releasing the energy (in the form of ATP) contained in those bonds.
Worksheet on Photosynthesis and Respiration – The Answers are in Italics A. Photosynthesis 1. Ecosystems contain plants, animals, fungi and bacteria.
In which of these groups does photosynthesis occur? Plants and some bacteria. The biggest difference between photosynthesis and respiration is that photosynthesis only occurs in plants and some bacteria while respiration occurs in all living organisms.
Photosynthesis and respiration are reactions that complement each other in the environment. They are in reality the same reactions but occurring in reverse. While in photosynthesis carbon dioxide and water yield glucose and oxygen, through the respiration process glucose and oxygen yield carbon.
Photosynthesis involves the use of energy from sunlight, water and carbon dioxide to produce glucose and oxygen. Cellular respiration uses glucose and oxygen to produce carbon dioxide and water.
To emphasize this point even more, the equation for photosynthesis is the opposite of cellular respiration. Photosynthesis: Photosynthesis, process by which green plants and certain other organisms transform light energy into chemical energy.