From the internet, gather information about the chromosome numbers of five animals and five plants. Correlate the number with the size of organism and answer the following questions.
(a) Do larger organisms have more number of chromosomes/cells?
(b) Can organism with fewer chromosomes reproduce more easily than organisms with more number of chromosomes?
(c) More the number of chromosomes/cells greater is the DNA content. Justify.
| Animals | Chromosome Number |
| Humans | 46 |
| Chimpanzee | 48 |
| Cat | 38 |
| Cattle | 60 |
| Rhesus Monkey | 42 |
| Plants | Chromosome Number |
|---|---|
| Mango | 40 |
| Potato | 48 |
| Sugarcane | 80 |
| Tobacco | 48 |
| Wheat | 28 |
a) Size of the organisms does not depend on the number of chromosomes.
b)
c) Chromosomes are thread-like structures located inside the nucleus of the cell of plants and animals. Chromosomes are made up of proteins and single molecules of DNA (deoxyribonucleic acid). Hence the more the number of chromosomes the greater the DNA content.
Metallic oxides of zinc, magnesium and copper were heated with the following metals.
| Metal | Zinc | Magnesium | Copper |
|---|---|---|---|
| Zinc oxide | |||
| Magnesium oxide | |||
| Cooper oxide |
In which cases will you find displacement reactions taking place?
Samples of four metals A, B, C and D were taken and added to the following solution one by one. The results obtained have been tabulated as follows.
| Metal | Iron(II) sulphate | Cooper(II) sulphate | Zinc sulphate | Silver nitrate |
| A | No reaction | Displacement | ||
| B | Displacement | No reaction | Displacement | |
| C | No reaction | No reaction | No reaction | No reaction |
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Welcome to the NCERT Solutions for Class 10 Science - Chapter . This page offers a step-by-step solution to the specific question from Excercise 0 , Question 36: From the internet, gather information about the chromosome numbers of five animals and five plants. ....
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