question answer of science 7 classs
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The process of respiration in plants involves using the sugars produced during photosynthesis plus oxygen to produce energy for plant growth. In many ways, respiration is the opposite of photosynthesis. ... As with photosynthesis, plants get oxygen from the air through the stomata
21. i. When the breakdown of glucose food occurs with the use of oxygen, it is called aerobic respiration.
ii. Afforestation is the planting of trees in a previously barren environment.
iii. Dilute acids are the acids which contain more amounts of water and less amounts of acid.
22. The leaves of plants have tiny pores on their surface which are called stomata. The exchanfe of gases (oxygen and carbon dioxide) in the leaves during respiration takes place through stomata. Oxygen from air enters into a leaf through stomata and reaches all the cells by the process of diffusion.