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Postulates of cell theory: (i) Cell is the smallest unit of structure of all living things. (ii) Cell is the unit of function of all living things. (iii) All cells arise from pre-existing cells. Cell theory was propounded by Theodor Schwann and Matthias Schleiden in the year 1839 and was modified by Rudolf Virchow in 1858.
Concise Biology Part II - Selina Solutions for Class 10 Biology ICSE Chapter 2: Get free access to Structure of Chromosomes, Cell Cycle and Cell Division Class 10 Solutions which includes all the exercises with solved solutions. Visit TopperLearning now!
Plant Cell and Animal Cell. Learn Plant Cell and Animal Cell ICSE Class 6 Biology The Cell through video lessons, MCQs & more at TopperLearning. Sign up & access study material of all ICSE Class 6 Biology chapters.
Access our recorded ICSE Class 10 Biology – Structure of Chromosomes – Cell Cycle and Cell Division – Mitosis video lectures online 24/7. Our Biology expert uses attractive visuals to help you with learning mitosis in an engaging manner through our concept videos. Relearn the basic Biology topic of cell cycle through our chapter resources.
Solution 10. Every animal or plant is made of many systems. Every system is made of many organs. Organs are made of many types of tissues, and tissues are made of many cells. A cell is an autonomous structure and is capable of carrying out various functions on its own. A cell can do all an organism can do.
(b) The process shown here is photosynthesis. Photosynthesis is the process by which living plant cells, containing chlorophyll, produce food in the form of glucose and starch, from carbon dioxide and water, by using light energy. (c) Destarching removes all the starch from the leaves and stores it in the storage organs of the plant. This makes ...
Hence, a plant cell, when kept in a hypertonic salt solution for about 30 minutes, turns flaccid. (e) Potato cubes contain excess salts and sugars compared to the water in which the cubes are placed. Hence, due to endosmosis, water from the surroundings enters the potato cubes, making them firm and increasing their size.
Click on the respective chapters to access the Concise Biology Class 10 solutions. Chapter 1 - Cell - The Structural and Functional Unit Of Life. Chapter 2 - Structure of Chromosomes, Cell Cycle and Cell Division. Chapter 3 - Genetics - Some Basic Fundamentals. Chapter 4 - Absorption by Roots: The Processes Involved.
3 → Companion cell. 4 → Sieve plate (c) The phloem is a food-conducting tissue and is likely to be found in the leaves and stem of plants to carry the food manufactured in the leaves to various parts of the plant. (d) 1 → Sieve cells: Help in the transport of food from leaves to storage organs and other parts of the plant.
Aug 16, 2015 · Nucleus is the most prominent and important structure in a cell. It acts as the control centre of the cell because of the following reasons: It regulates cell functions. It regulates the cell cycle. It contains chromosomes, made of genes, which control hereditary characteristics. The cell dies in the absence of nucleus.
