Class 7 Science - ANDHRA-PRADESH
Life Processes in Plants
The chapter 'Life Processes in Plants' in Class 7 Science for Andhra Pradesh (BSEAP) students explores how plants perform essential functions to stay alive and grow. It delves into how plants prepare their own food through photosynthesis, how water and minerals are transported from roots to leaves via xylem and phloem, and how plants respire and excrete waste. Understanding these biological processes is crucial for board exams as it builds the foundational knowledge of plant physiology, helping students answer direct descriptive questions and conceptual queries in their summative assessments.
Start Learning FreeKey Concepts
Photosynthesis
The process by which green plants prepare their own food using carbon dioxide, water, and sunlight in the presence of chlorophyll, releasing oxygen as a byproduct.
Transportation in Plants
The movement of water and minerals absorbed by roots to all parts of the plant through specialized tube-like tissues called xylem and phloem.
Respiration
The process by which plants break down glucose to release energy for their growth and daily activities, taking in oxygen and giving out carbon dioxide.
Transpiration
The evaporation of excess water from the aerial parts of the plant, mainly through tiny pores called stomata on the leaves, which helps in cooling and pulling water upward.
Excretion in Plants
The removal of waste products from the plant body, which plants manage by shedding leaves, storing waste in bark or fruits, or releasing oxygen and carbon dioxide.
Important Formulas
Board Exam Info
In the Andhra Pradesh (BSEAP) Class 7 Science examinations, this chapter typically carries around 6 to 8 marks. Questions usually include fill-in-the-blanks, matching, short answer questions explaining photosynthesis or transpiration, and diagrams of stomata or the transport system in plants.
Frequently Asked Questions
What is the role of stomata in plants?
Stomata are tiny pores on leaves that help in the exchange of gases like carbon dioxide and oxygen, and also facilitate transpiration.
How do plants transport water to great heights?
Plants transport water through a tissue called xylem. The upward pull created by transpiration helps draw water from the roots to the topmost leaves.
Do plants respire only at night?
No, plants respire 24 hours a day. They take in oxygen and release carbon dioxide constantly, but photosynthesis only happens during the day in the presence of sunlight.
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