Class VII – Science Chapter 1: Nutrition in Plants I. Fill in the blanks The process of intake of food and its proper utilization by the body is called nutrition. Two modes of nutrition in plants are autotrophic and heterotrophic. The mode of nutrition in which an organism makes its own food from simple substances …
Acid Bases and Salts I. Fill in the blanks Q1: The substances that are sour in taste have _____ in them. A1: acid Q2: Acid turns blue litmus paper _____. A2: red Q3: Metal + Acid → X + Y. X: _____ Y: _____ A3: Salt Hydrogen Q4: _____ is a measure of how acidic …
Control and Coordination in Plants Overview Plants rely on chemical signals and responses to environmental stimuli to control and coordinate their activities. This involves growth movements, responses to light, gravity, water, and touch, and the action of plant hormones. Tropisms Tropisms are directional growth movements that occur in response to external stimuli, enabling plants to …
Control and Coordination in Science Overview of Control and Coordination Control and coordination are essential functions in living organisms to maintain a stable internal environment and respond to external stimuli. This involves the nervous system and endocrine system in animals, and various hormonal responses in plants. Nervous System The nervous system controls and coordinates voluntary …
Mathematics Reference Manual Quadratic Equations Forming Quadratic Polynomials A quadratic polynomial is of the form (ax^2 + bx + c). Example: Form a quadratic polynomial given the roots (alpha = 3) and (beta = -2). Sum of roots: (alpha + beta = 1) Product of roots: (alpha beta = -6) Quadratic polynomial: (x^2 – (alpha …
Newton’s Laws and Motion Q&A Comprehensive Q&A on Newton’s Laws, Gravity, and Motion Q: What is inertia? Inertia is the property of an object to resist changes in its state of motion. This means that an object at rest will stay at rest, and an object in motion will continue moving at a constant velocity …
Newton’s Laws and Motion Q&A About Newton’s Laws, Gravity, and Motion Q1: What is inertia? Inertia is the property of an object to resist changes in its state of motion. This means that an object at rest will stay at rest, and an object in motion will continue moving at a constant velocity unless acted …
Free Fall and Motion Equations Free fall refers to the motion of an object under the influence of gravitational force only, with no other forces acting on it (like air resistance). When an object is in free fall, it accelerates downward due to gravity. Equations of Motion for Free Fall When an object falls freely …
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Newton’s Laws of Motion Newton’s First Law of Motion Newton’s First Law of Motion, also known as the Law of Inertia, states: “An object at rest will remain at rest, and an object in motion will continue in motion with a constant velocity, unless acted upon by an external force.” Key Concepts: Inertia: The property …
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