Class 7 Science - KARNATAKA
Life Processes in Plants
The chapter 'Life Processes in Plants' for Class 7 Karnataka (KSEEB) students explores how plants survive, grow, and maintain life. It covers essential biological processes like nutrition, how plants make their own food through photosynthesis, how water and minerals are transported from roots to leaves, and how plants breathe through stomata. Understanding these processes is vital for board exams as it forms the foundation of plant biology, explaining how green plants act as universal food producers and sustain life on Earth.
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.
Transportation in Plants
The movement of water and minerals absorbed by the roots to the rest of the plant body through specialized pipe-like tissues called xylem.
Transpiration
The loss of water in the form of water vapor from the aerial parts of plants, mainly through tiny pores called stomata.
Respiration in Plants
The process by which plants break down food to release energy, taking in oxygen and giving out carbon dioxide day and night.
Autotrophic Nutrition
A mode of nutrition in which organisms like green plants make their own food from simple inorganic substances.
Important Formulas
Board Exam Info
In Karnataka (KSEEB) Class 7 Science examinations, this chapter typically carries around 5 to 8 marks. Question types frequently include fill-in-the-blanks, matching the following, definitions of terms like transpiration and photosynthesis, and short-answer questions explaining the necessity of sunlight for plants.
Frequently Asked Questions
Transpiration helps in creating a suction pull that draws water and minerals upward from the roots to the leaves, and it also cools the plant down.
Transpiration creates a suction pull that draws water and minerals upward from the roots to the leaves, and it also helps in cooling the plant.
Do plants respire during the daytime?
Yes, plants respire 24 hours a day. However, during the day, the oxygen produced during photosynthesis is much more than the oxygen consumed in respiration.
What is the role of chlorophyll in plants?
Chlorophyll is a green pigment found in leaves that traps energy from sunlight, which is necessary for the plant to carry out photosynthesis.
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