About 200 years ago, Jan Baptista van Helmont wanted to know where growing plants get the materials necessary for increases in size. He planted a tree seedling weighing 2.2 kilograms (5 pounds) in a barrel filled with 90 kilograms (200 pounds) of soil and then watered the tree regularly. After five years, the tree had gained almost 75 kilograms (164 pounds), and the soil's weight was unchanged. He incorrectly concluded that the tree had gained all of its additional weight by absorbing water. How did the tree really gain most of its weight?

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A: Soil is the topmost layer of the earth which is formed by the process of weathering. The process of…

Q: Match A, B, C and D with: - Adventitious - Fibrous - Nodulated - Tap Root

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Q: In the early 1600s, Jean Baptista van Helmont investigated how plantsacquire new mass as they grow.…

A: The source did he fail to consider in his experiment are :

Q: What is the time required for water to reach the uppermost leaf on a fresh stem cut in air?

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Q: About 200 years ago, Jan Batista van Helmont wanted to know where growing plants get the materials…

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Q: What does the term “evergreen” mean?

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A:

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Q: Why a cut plant wilts fast even when the cut part is dipped in water?

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Q: Name the four soil components.

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Q: Some seeds (tomato, for example) had been germinated and the seedling grew for 2 weeks in soil,…

A: Ans:  GROUP 1

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Plant sensory system

The plant sensory system is a sophisticated system that responds to environmental stimuli such as light,temperature, gravity, and touch. Research predicts that plant hormones and signaling mechanisms areresponsible for this regulation system in plants.