Question

Q. Explain primary productivity and the factors that influence it.​

Answer 1

Answer:

Factors influencing the primary productivity are: -Temperature: It controls the enzyme-mediated dark reaction rate of photosynthesis. -Availability of nutrients and photosynthetic capacity of plants also influence the rate of primary productivity. -Species succession is also a regulating factor.

Explanation:

In aquatic ecosystems, primary productivity is driven by the availability of nutrients and light and, to a lesser extent, by temperature and other factors. Primary productivity is important because it is the process that forms the foundation of food webs in most ecosystems

Primary productivity is the process by which organisms make their own food from inorganic sources. ... These organisms are known as autotrophs, since they can use inorganic substrates and solar energy to carry out metabolic processes and build cellular material.

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Answer 2

Explanation:

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ᴛʜᴇ ᴀᴍᴏᴜɴᴛ ᴏғ ʙɪᴏᴍᴀss ᴏʀ ᴏʀɢᴀɴɪᴄ ᴍᴀᴛᴛᴇʀ ᴘʀᴏᴅᴜᴄᴇᴅ ᴘᴇʀ ᴜɴɪᴛ ᴀʀᴇᴀ ᴏᴠᴇʀ ᴀ ᴛɪᴍᴇ ᴘᴇʀɪᴏᴅ ɪɴ ᴘʟᴀɴᴛs ᴅᴜʀɪɴɢ ᴘʜᴏᴛᴏsʏɴᴛʜᴇsɪs ɪs ᴄᴀʟʟᴇᴅ ᴘʀɪᴍᴀʀʏ ᴘʀᴏᴅᴜᴄᴛɪᴏɴ. ɪᴛ ɪs ᴇxᴘʀᴇssᴇᴅ ɪɴ ᴛᴇʀᴍs ᴏғ ᴡᴇɪɢʜᴛ (ɢ ᴍ–2) ᴏʀ ᴇɴᴇʀɢʏ (ᴋᴄᴀʟ ᴍ–2 ).

▪ ᴘʟᴀɴᴛ sᴘᴇᴄɪᴇs ɪɴʜᴀʙɪᴛɪɴɢ ᴀ ᴘᴀʀᴛɪᴄᴜʟᴀʀ ᴀʀᴇᴀ.

▪ ᴇɴᴠɪʀᴏɴᴍᴇɴᴛᴀʟ ғᴀᴄᴛᴏʀs.

ᴀ. sᴜɴʟɪɢʜᴛ: ᴛʜᴇ sᴜɴʟɪɢʜᴛ ᴅɪʀᴇᴄᴛʟʏ ʀᴇɢᴜʟᴀᴛᴇs ᴛʜᴇ ᴘʀɪᴍᴀʀʏ ᴘʀᴏᴅᴜᴄᴛɪᴠɪᴛʏ ʙᴇᴄᴀᴜsᴇ ᴛʜᴇ ᴘʟᴀɴᴛs ᴘᴇʀғᴏʀᴍ ᴘʜᴏᴛᴏsʏɴᴛʜᴇsɪs ᴡɪᴛʜ ᴛʜᴇ ʜᴇʟᴘ ᴏғ sᴜɴʟɪɢʜᴛ. ᴀs ᴛʀᴏᴘɪᴄᴀʟ ʀᴇɢɪᴏɴ ʀᴇᴄᴇɪᴠᴇs ᴍᴀxɪᴍᴜᴍ sᴜɴʟɪɢʜᴛ sᴏ ɪᴛ ᴇxʜɪʙɪᴛs ʜɪɢʜᴇʀ ᴘʀᴏᴅᴜᴄᴛɪᴠɪᴛʏ.

ʙ. ᴛᴇᴍᴘᴇʀᴀᴛᴜʀᴇ: ᴛᴇᴍᴘᴇʀᴀᴛᴜʀᴇ ʀᴇɢᴜʟᴀᴛᴇs ᴛʜᴇ ᴀᴄᴛɪᴠɪᴛʏ ᴏғ ᴇɴᴢʏᴍᴇ. sᴏ, ᴏᴘᴛɪᴍᴜᴍ ᴛᴇᴍᴘᴇʀᴀᴛᴜʀᴇ ɪs ʀᴇǫᴜɪʀᴇᴅ ғᴏʀ ᴘʀᴏᴘᴇʀ ғᴜɴᴄᴛɪᴏɴɪɴɢ ᴏғ ᴇɴᴢʏᴍᴇ.

ᴄ. ᴍᴏɪsᴛᴜʀᴇ: ʀᴀɪɴ (ʜᴜᴍɪᴅɪᴛʏ) ɪs ʀᴇǫᴜɪʀᴇᴅ ғᴏʀ ʜɪɢʜᴇʀ ᴘʀɪᴍᴀʀʏ ᴘʀᴏᴅᴜᴄᴛɪᴠɪᴛʏ. ᴅᴇsᴇʀᴛs ʜᴀᴠᴇ ᴛʜᴇ ʟᴏᴡᴇsᴛ ᴘʀɪᴍᴀʀʏ ᴘʀᴏᴅᴜᴄᴛɪᴠɪᴛʏ ᴀs ᴛʜᴇ sᴏɪʟ ɪs ᴅᴇғɪᴄɪᴇɴᴛ ɪɴ ᴍᴏɪsᴛᴜʀᴇ.

▪ ᴀᴠᴀɪʟᴀʙɪʟɪᴛʏ ᴏғ ɴᴜᴛʀɪᴇɴᴛs: ɢʀᴇᴀᴛᴇʀ ɴᴜᴛʀɪᴇɴᴛs ᴇɴsᴜʀᴇ ɢʀᴇᴀᴛᴇʀ ᴘʀɪᴍᴀʀʏ ᴘʀᴏᴅᴜᴄᴛɪᴠɪᴛʏ.

▪ ᴘʜᴏᴛᴏsʏɴᴛʜᴇᴛɪᴄ ᴇғғɪᴄɪᴇɴᴄʏ: sᴏᴍᴇ ᴘʟᴀɴᴛs ʜᴀᴠᴇ ᴍᴏʀᴇ ᴇғғɪᴄɪᴇɴᴄʏ ᴛᴏ ᴛʀᴀᴘ sᴜɴʟɪɢʜᴛ (sᴜɢᴀʀᴄᴀɴᴇ), sᴏ ᴛʜᴇʏ ᴀᴄᴄᴜᴍᴜʟᴀᴛᴇ ᴍᴏʀᴇ ᴘʀɪᴍᴀʀʏ ᴘʀᴏᴅᴜᴄᴛɪᴠɪᴛʏ.