Oswaal CBSE CCE Question Bank With Complete Solutions For Class 10 Term II (Oct-Mar 2016 ) Science

Oswaal CBSE CCE Question Bank With Complete Solutions For Class 10 Term II (Oct-Mar 2016 ) Science
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Oswaal CBSE CCE Question Bank With Complete Solutions For Class 10 Term II (Oct-Mar 2016 ) Science

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ISBN: 9789351276739
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13. DNA content has the tendency to double itself during sexual reproduction due to combining of the genetic materials from two parents. How can the problem of DNA doubling be solved to maintain the consistency of the genetic material throughout the species 3 14. a With the help of a diagram demonstrate the process of regeneratison as seen in Planaria.
b Which type of cells are used by such multi-cellular organisms to regenerate 3 15. The process of spore formation takes place in many simple multi-cellular organisms which have certain reproductive parts that can be identified. 3 a Name the organism using this process. b Name the reproductive and non-reproductive parts of such organisms. 16. State one main function each of iris, pupil, and cornea.
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17. A concave lens has focal length of 20 cm. At what distance from the lens should a 5 cm tall object be placed so that it forms an image at 15 cm from the lens Also calculate the size of the image formed. 3 18. Eco-club of your school is organising a debate on the topic Nature s Fury Unleashed by Human s Greed Uttrakhand Disaster . 3 a List three arguments that you will use to convince the audience that humans are
responsible for this disaster. b List any three values that will be inculcated with this debate. 19. a State any three physical properties of carbon compounds.
b Carbon is a versatile element. Justify this statement.
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20. a Explain whether traits like eye colour or height is genetically inherited. Do power to lift
weights and reading french also belong to the same category b do variations affect the evolution of those organisms that reproduce sexually 5 How 21. i
Identify the process depicted in the picture given below
a Name the organism that divides by the above process. b Compare the above process with multiple fission. c State the type of reproduction in the above process and define it.