Define photosynthesis ?
Answers
Answer:
The process by which green plants and some other organisms use sunlight to synthesize nutrients from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a by-product.
Answer
ᴩʜᴏᴛᴏꜱyɴᴛʜᴇꜱɪꜱ ɪꜱ ᴀ ᴩʜyꜱɪᴄᴏ-ᴄʜᴇᴍɪᴄᴀʟ ᴩʀᴏᴄᴇꜱꜱ ʙy ᴡʜɪᴄʜ ɢʀᴇᴇɴ ᴩʟᴀɴᴛꜱ ᴜꜱᴇ ʟɪɢʜᴛ ᴇɴᴇʀɢy ᴛᴏ ᴅʀɪᴠᴇ ᴛʜᴇ ꜱyɴᴛʜᴇꜱɪꜱ ᴏꜰ ᴏʀɢᴀɴɪᴄ ᴄᴏᴍᴩᴏᴜɴᴅꜱ. ɪᴛ ɪꜱ ᴀɴ ᴇɴᴢyᴍᴇ ʀᴇɢᴜʟᴀᴛᴇᴅ ᴀɴᴀʙᴏʟɪᴄ ᴩʀᴏᴄᴇꜱꜱ.
Explanation
Chloroplasts are the sites of photosynthesis in plants and blue-green algae. All green parts of a plant, including the green stems, green leaves, and sepals – floral parts comprise of chloroplasts – green colour plastids. These cell organelles are present only in plant cells and are located within the mesophyll cells of leaves.
Factors Affecting Photosynthesis
Photosynthesis process requires several factors such as:
Light Intensity: Increased light intensity results in a higher rate of photosynthesis. On the other hand, low light intensity results in a lower rate of photosynthesis.
The concentration of CO2: Higher concentration of carbon dioxide helps in increasing the rate of photosynthesis. Usually, carbon dioxide in the range of 300 – 400 PPM is adequate for photosynthesis.
Temperature: For efficient execution of photosynthesis, it is important to have a temperature range between 25° to 35° C.
Water: As water is an important factor in photosynthesis, its deficiency can lead to problems in the intake of carbon dioxide. The scarcity of water leads to the refusal of stomatal opening to retain the amount of water they have stored inside.
Pollution: Industrial pollutants and other particulates may settle on the leaf surface. This can block the pores of stomata which makes it difficult to take in carbon dioxide.