Class 7 Science - GUJARAT
Life Processes in Plants
The chapter 'Life Processes in Plants' in Class 7 Science explores how plants live, grow, and survive. Students learn about nutrition, focusing heavily on photosynthesis—the process by which green plants make their food using sunlight, water, and carbon dioxide. The chapter also covers the transport of water and minerals through roots, stems, and leaves via vascular tissues, as well as plant respiration and transpiration. Understanding these vital processes is crucial for Gujarat (GSEB) board exams, as questions frequently test concepts related to plant food production, stomata functions, and transportation systems through diagrams and short answers.
Start Learning FreeKey Concepts
Photosynthesis
The process by which green plants prepare their own food using carbon dioxide and water in the presence of sunlight and chlorophyll.
Chlorophyll
The green pigment present in plant leaves that traps energy from sunlight to drive the process of photosynthesis.
Transpiration
The evaporation of water from plant leaves through tiny pores called stomata, which helps in cooling the plant and pulling water upward.
Xylem and Phloem
Xylem transports water and minerals from roots to leaves, while phloem transports prepared food from leaves to other parts of the plant.
Stomata
Tiny pores on the underside of leaves that help in the exchange of gases (oxygen and carbon dioxide) and water vapor.
Important Formulas
Board Exam Info
In Gujarat (GSEB) Class 7 Science exams, this chapter typically carries around 6 to 8 marks. Questions usually include fill-in-the-blanks, true or false, defining key terms like photosynthesis and transpiration, and drawing or labeling the structure of stomata or the transport system in plants.
Frequently Asked Questions
Why do plants need photosynthesis?
Plants need photosynthesis to make their own food (glucose) for energy and growth, while also releasing oxygen which is essential for life on Earth.
How does water reach the top of tall trees?
Water is absorbed by the roots and moves upward through tube-like tissues called xylem, aided by the suction pull created by transpiration in the leaves.
What is the function of stomata in leaves?
Stomata allow plants to take in carbon dioxide from the air, release oxygen produced during photosynthesis, and lose excess water through transpiration.
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