Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • NCERT
  • 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?

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.

Answers (1)

Ans.

PLANTS                             Chromosome number                          ANIMALS                             Chromosome number
Rice                                                24                                               Housefly                                         8
Apple                                              34                                                 Dog                                              78
Potato                                             48                                               Butterfly                                         380
Onion                                              16                                               Human                                           46
Maize                                              20                                                 Rat                                               42

(a) No, there is a relation between the size of the organism and the number of chromosomes.
(b) No, the reproduction process depends on environmental factors such as availability of water, pollinator etc. and not on the number of chromosomes
in organisms.
(c) Yes, genes are segments of DNA. DNA is closely packed into chromosomes hence more chromosome means greater the DNA.

 

Posted by

infoexpert26

View full answer

Similar Questions

Latest Question