12 MINERAL NUTRITION

12 MINERAL NUTRITION MINERAL NUTRITION practice questions Mineral Nutrition Carbohydrates, proteins, lipids, water, and minerals are required for all living creatures to survive. Plants, too, require nutrients for growth and development. Essential Mineral Elements Mineral needs vary depending on the plant. There is a criterion for determining whether or not an ingredient is necessary. It […]

11.TRANSPORT IN PLANTS QUESTIONS

11.TRANSPORT IN PLANTS QUESTIONS Melvin Calvin earned Nobel prize in 1961 for (A) mapping pathway of carbon assimilation in respiration (B) mapping pathway of carbon absorption in photosynthesis (C) mapping pathway of carbon assimilation in photosynthesis (D) mapping pathway of carbon absorption in respiration. Cytoplasmic streaming helps to move substances over (A) long distances (B) […]

11 TRANSPORT IN PLANTS

11 TRANSPORT IN PLANTS Translocation 11 TRANSPORT IN PLANTS Long distance transport occurs through vascular system, xylem and phloem called translocation through mass flow. The direction of translocation may be unidirectional as in case of water and multidirectional as in minerals and organic solutes. Means of transport (Short distance transport) The transport of material into […]

10 CELL CYCLE AND CELL DIVISION

10 CELL CYCLE AND CELL DIVISION PRACTICE QUESTIONS Cell cycle The sequence of events by which a cell duplicates its genome, synthesizes the other constituents of cells and eventually divides into two daughter cells is called cell cycle. G1 Phase: Cell metabolically active and grows continuously but does not replicate DNA S Phase: DNA synthesis […]

9 BIOMOLECULES

9 BIOMOLECULES Biomolecules All the carbon compounds that we get from living tissues. Biomicromolecules: Molecules which have molecular weights less than one thousand Dalton. They are also known as monomers. Biomacromolecules: Have molecular weight more than 10000 Daltons (generally 10,000 Daltons and above). They are generally polymers. A biomolecule a with molecular weight in the […]

8 CELL THE UNIT OF LIFE PRACTICE QUESTIONS

8 CELL THE UNIT OF LIFE PRACTICE QUESTIONS In living organisms detailed description that brings out their knowledge of diversity is about A) Their form B) Their appearance C) Both D) None What brought out the unit of diversity the cellular organisation of all life form: A) Theory of evolution B) Species theory C) Cell […]

CHAPTER 7 STRUCTURAL ORGANISATION IN ANIMALS PRACTICE QUESTIONS

CHAPTER 7 STRUCTURAL ORGANISATION IN ANIMALS PRACTICE QUESTIONS CHAPTER NOTES Consider the following statements: a) A tissue is composed of similar cells which perform specific functions. b) Epithelial tissues are characterized by a free surface toward body fluid or outside environment. Select the correct option. A) a is true, b is false B) Both a […]

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