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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

  1. Size of organism has nothing to do with chromesome numbers
  2. Organism with fewer chromosomes need not reproduce easily compared to organisms with more number of chromosomes.
  3. Chromosomes are made of Hence more number of chromosomes means more number of DNA.
Science · Class 10