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B. State the postulate of Dalton's atomic theory which indicates the law of constant proportions.(OR)Describe an activity to prove the law of conservation of mass.17. What is evaporation? How is it different from boiling? Mention 2 factors on which the rate ofevaporation depends upon.18. a. Define evolutionb. What are the conventions followed while writing the scientific name?(OR)2. Draw a neat labelled diagram of a coelenterata.b. Write the scientific name of a common frog.19. Name the followinga. Organism responsible for peptic ulcers.. The process of recruitment of immune cells to kill off the pathogens in the affected tissue.C. The slow-growing large coloured patches on the bark of trees.corkThe crop obtained by the introduction of a desired gene.c. The process of gaseous exchange between the cells as well as with its external environment.f. The functional segments of DNA.​

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Answer:

State the postulate of Dalton's atomic theory which indicates the law of constant proportions. (OR) Describe an activity to prove the law of conservation of mass. 17. What is evaporation? How is it different from boiling? Mention 2 factors on which the RATE of evaporation depends UPON. 18. a. Define evolution b. What are the conventions followed while writing the scientific name? (OR) 2. Draw a NEAT labelled diagram of a coelenterata. b. Write the scientific name of a common frog. 19. Name the following a. Organism responsible for peptic ulcers. . The process of recruitment of immune cells to kill off the pathogens in the affected tissue. C. The slow-growing large coloured patches on the bark of trees.cork The CROP obtained by the introduction of a DESIRED gene. c. The process of gaseous exchange between the cells as well as with its external environment. f. The functional segments of DNA.



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