1. 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.
ScienceClass 10CBSEAnswered 27 Mar 2026
Answer
Soln:
|
Animals |
Chromosome numbers |
Plants |
Chromosome numbers |
|
Man |
46 |
Corn |
20 |
|
Cat |
38 |
Cotton |
52 |
|
Horse |
64 |
Garden pea |
14 |
|
Rabbit |
44 |
Mango |
40 |
|
Elephant |
56 |
Onion |
16 |
- Size of organism has nothing to do with chromesome numbers
- Organism with fewer chromosomes need not reproduce easily compared to organisms with more number of chromosomes.
- Chromosomes are made of Hence more number of chromosomes means more number of DNA.