Answer:
HERBACEOUS PLANTS• Support is provided by the turgidity of parenchyma & collenchyma cells & xylem tissues. Parenchyma cells are filled with water turgid• Collenchyma cells have unevenly thickened cellulose walls which provide support in stem & the midrib of the leaves.
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Answer:
The proportion of oxygen went up because of photosynthesis by plants. The proportion of carbon dioxide went down because: it was locked up in sedimentary rocks (such as limestone) and in fossil fuels. it was absorbed by plants for photosynthesis.
Explanation:
Mitosis, as a cell gives two daughter cells with the number of chromosome in daughter cells remaining same as that of parent, hence also known as equational cell division.
Answer: Possession of traits that aid their survival in extreme conditions.
Explanation: Because archaea that grow in extreme environments possess certain characteristics that aid in their survival in the extreme weather conditions. Those traits are studied regularly to improve other plants.
