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Friday 8 January 2016

Do prepare well for the revision test class 10th

some questions
If red flowered plant is  crossed with white ,write the phenotype and genotype of first and only phenotype of second generation , if red coloured gene is denoted by G & white coloured gene is denoted by g.

How can you say that fossils are very useful in finding the path of evolution and what are the ways to calculate the age of fossils?

Give reasons for the following -
wings of birds and forelimbs of man are homologous
Food chains don't have more than 5-6 steps

If the first trophic level receives 100 KJ of energy from sun ,calculate the amount of energy received by bird in  a food chain consisting of algae, bird,fish and water insect.

How can you prove that acquired traits are not inherited.
Define bio magnification and give it's example.
Happy reading

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