Write down the significance of photosynthesis and respiration.
Answers
Answer:
Which of the following is the significance of photosynthesis?
A. Balance of carbon dioxide and oxygen
B. Balance of nitrogen in the environment
C. Provides food
D. Both A and C
Explanation:
Complete answer:
Photosynthesis is the process by which green plants and certain other organisms transform light energy into chemical energy. During photosynthesis in green plants, light energy is captured and used to convert water, carbon dioxide, and minerals into oxygen and energy-rich organic compounds.
Significance of photosynthesis
- Photosynthesis is a physiological process that is an ultimate source of oxygen and energy for all living organisms.
- It provides food for all living beings but the process occurs in the leaves of green plants.
- It fixes and balances the amount of carbon dioxide and oxygen in the atmosphere by plants exhaling oxygen and animals and humans exhaling carbon dioxide.
- It helps in the synthesis of organic compounds from inorganic compounds.
- It provides nutrition to the plants and thus helps in their growth and development.
Additional information
- Photosynthesis occurs in the chloroplast of the green plants which consists of a green color pigment called chlorophyll.
- Chloroplasts are present only in plant cells and are located within the mesophyll cells of the leaves.
- Glucose is formed as a source of food for plants that provide energy for growth and development.
Photosynthesis equation is:
6CO2+6H2O→C6H1206+6O2" role="presentation" style="box-sizing: border-box; font-family: "Open Sans", sans-serif; -webkit-tap-highlight-color: rgba(255, 255, 255, 0); display: inline; font-style: normal; font-weight: 400; line-height: 49px; font-size: 16px; text-indent: 0px; text-align: left; text-transform: none; letter-spacing: normal; word-spacing: 0px; overflow-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; padding: 0px; margin: 0px; color: rgb(51, 46, 43); font-variant-ligatures: normal; font-variant-caps: normal; orphans: 2; widows: 2; -webkit-text-stroke-width: 0px; background-color: rgb(255, 255, 255); text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; position: relative;">6CO2+6H2O→C6H1206+6O26CO2+6H2O→C6H1206+6O2
So, the correct answer is ‘Both A and C’
Note: Photosynthesis occurs in two stages:
- Light-dependent reaction or light reaction – occurs in the presence of sunlight during the daytime.
- Light independent reaction or dark reaction – also called carbon-fixing reaction.
photosynthesis, the process by which green plants and certain other organisms transform light energy into chemical energy. During photosynthesis in green plants, light energy is captured and used to convert water, carbon dioxide, and minerals into oxygen and energy-rich organic compounds.
Plants make sugar by using energy from sunlight to transform carbon
dioxide (CO2), a gas absorbed from the air, and water (H20) taken from the
ground by roots into glucose (C6H12O6) and oxygen (O2). This process is called
photosynthesis and occurs in the chloroplast of the plant cell. Plants take in
carbon dioxide through tiny openings or pores in their leaves called stomata.
Special cells in the leaves of plants called guard cells open and close the
stomata.
Cellular respiration is a process that occurs in the mitochondria of all
organisms. In this process, both plants and animals break down simple sugars
into carbon dioxide and water and release energy in the form of adenosine
triphosphate (ATP). The ATP is used for all the processes that occur within a cell
that need energy.