Chapter 14: Respiration in Plants
NCERT TEXTBOOK QUESTIONS FROM SOLVED 1. Give the schematic representation of an overall view of Krebs’ cycle.Solution: 2. Differentiate between(a) Respiration and Combustion(b) Glycolysis and Krebs’cycle(c) Aerobic respiration and FermentationSolution: (a) Differences between respiration and combustion are as…
Chapter 13: Organisms and Populations
1. How is diapause different from hibernation?Ans: Diapause is a period of suspended growth or development occuring in many insects and other invertebrates during which metabolic activities are greatly reduced. On the other hand, hibernation is a sleep like…
Chapter 13: Photosynthesis in Higher Plants
1. By looking at a plant externally can you tell whether a plant is C3 or C4 ? Why and how?Solution: It is not possible to distinguish externally between a C3 and C4 plant, but generally tropical plants are adapted for…
Chapter 12: Biotechnology and its Applications
1. Crystals of Bt toxin produced by some bacteria do not kill the bacteria themselves because –(a) bacteria are resistant to the toxin(b) toxin is immature;(c) toxin is inactive;(d) bacteria encloses toxin in a special sac.Ans: (c) Toxin…
Chapter 12: Mineral Nutrition
1.’All elements that are present in a plant need not be essential to its survival’. Comment.Soln. Most of the mineral elements present in the soil enter plants through roots but all of these may not be essential for…
Chapter 11: Biotechnology Principles And Processes
1. Can you list 10 recombinant proteins which are used in medical practice? Find out where they are used as therapeutics (use the internet).Ans: (i) Human insulin – Diabetes(ii) Human growth hormone – Dwarfism cure(iii) Blood clotting factor…
Chapter 11: Transport in Plants
1.What are the factors affecting the rate of diffusion?Solution. Factors affecting the rate of diffusion are : 2.What are porins? What role do they play in diffusion?Solution: The porins are proteins that form huge pores in the outer membranes…
Chapter 10: Cell Cycle and Cell Division
NCRT TEXTBOOK QUESTIONS SOLVED 1. What is the average cell cycle span for a mammalian cell?Solution: 24 hours. 2. Distinguish cytokinesis from karyokinesis.Solution: Differences between cytokinesis and karyokinesis are: 3. Describe the events taking place during the interphase.Solution: The interphase,…
Chapter 10: Microbes in Human Welfare
1. Bacteria cannot be seen with the naked eyes, but these can be seen with the help of a microscope. If you have to carry a sample from your home to your biology laboratory to demonstrate the…
Chapter 9: Strategies for Enhancement in Food Production
1. Explain in brief the role of animal husbandry in human welfare.Ans: Animal husbandry deals with the caring, feeding and management of domesticated animals. It includes poultry, farming and fisheries.These animals are very useful for human beings…
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