Class 7 Science - HARYANA
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 on how green plants make their own food through photosynthesis using sunlight, water, and carbon dioxide. The chapter also covers the transport of water and minerals through vascular tissues like xylem and phloem, and the release of water vapor through transpiration. Understanding these vital processes is essential for Haryana (BSEH) board exams as it forms the foundational knowledge of plant biology, frequently appearing in both objective and descriptive exam questions.
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.
Stomata
Tiny pores present on the surface of leaves that help in the exchange of gases and the loss of water vapor.
Xylem and Phloem
Xylem is the tissue responsible for transporting water and minerals from roots to leaves, while phloem transports prepared food to all parts of the plant.
Transpiration
The evaporation of excess water from the aerial parts of the plant, mainly through the stomata, creating a suction pull for water transport.
Autotrophic Nutrition
A mode of nutrition in which organisms make their own food simply from inorganic substances, seen in green plants.
Important Formulas
Board Exam Info
This chapter typically carries around 4 to 6 marks in the Haryana (BSEH) Class 7 Science examinations. Common question types include fill in the blanks, define terms like photosynthesis and transpiration, diagram-based questions on stomata, and short answer questions explaining the transport system in plants.
Frequently Asked Questions
Why do plants need sunlight for photosynthesis?
Sunlight provides the essential light energy required to convert carbon dioxide and water into chemical energy in the form of glucose.
What is the main function of stomata in leaves?
Stomata allow plants to take in carbon dioxide from the air and release oxygen, while also helping in transpiration.
How do roots absorb water from the soil?
Roots absorb water and minerals from the soil through root hairs via a process called osmosis.
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