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Ans. (b)
Explanation:
The movement of water molecules inside the cell stops when the solution becomes isotonic with respect to the surrounding solution. Isotonic refers to an equal concentration of both solute and solvent.
Ans. (d) Cytoplasm and cell membrane
Explanation:
In order to function, cells are required to move materials in and out of their cytoplasm via their cell membranes. Therefore cytoplasm and cell membrane is an important requirement.
Explanation:
Drops of water on a leaf of a plant like peepal does not enter the leaf by osmosis due to the presence of cuticle, which does not allow water molecules to pass through it.
Explanation:
Water potential is a measure of potential energy of water per unit volume or the difference in potential energy between a given water sample and pure water.
Explanation:
Active Transport | Passive Transport |
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In active transport, minerals present in solutions are transferred from a region of their lower concentration to the one of their higher concentration by using metabolic energy. | In passive transport, minerals are transferred from a region of their higher concentration to a region of their lower concentration without using metabolic energy. |
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Download NowChapter No. | Chapter Name |
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Chapter 1 | Structure of Chromosome, Cell Cycle and Cell division |
Chapter 2 | Genetics: Mendel's law of Inheritance |
Chapter 3 | Absorption by Roots- The Processes Involved |
Chapter 4 | Transpiration |
Chapter 5 | Photosynthesis |
Chapter 6 | Chemical Coordination in Plants |
Chapter 7 | The Circulatory System |
Chapter 8 | The Excretory System |
Chapter 9 | The Nervous System and Sense Organs |
Chapter 10 | The Endocrine System |
Chapter 11 | The Reproductive System |
Chapter 12 | Human Population |
Chapter 13 | Human Evolution |
Chapter 14 | Pollution |
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