4.
Name some of the excretory substances formed in plants,
5. How does excretion takes place in birds and insects?
6.
Draw a labelled diagram of the excretory system in human beings
hellozebakhatoon:
class 7th ka
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1. Carbon dioxide, excess water produced during respiration and nitrogenous compounds produced during protein metabolism are the major excretory products in plants. Plants produce two gaseous waste products i.e. oxygen during photosynthesis and carbon dioxide during respiration.
2. In insects, a system involving Malpighian tubules is utilized to excrete metabolic waste. Metabolic waste diffuses or is actively transported into the tubule, which transports the wastes to the intestines. The metabolic waste is then released from the body along with fecal matter.
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