CBSE Class 12-science Answered
While
walking in the garden, Amit got hurt by a thorn present on a twig bearing
beautiful rose flowers. He started analysing the role of different parts of the
rose plant such as leaves, flowers etc. but was not able to understand the
need of thorns on the rose plant.
Read
the above passage and answer the following questions:
(i) Why
plants produce thorn/spine-like structures on their body?
(ii)
What is meant by adaptation?
(iii)
What are other methods of adaptations of organisms in specific environments?
Asked by Topperlearning User | 16 Jun, 2014, 04:14: PM
Expert Answer
(i) Many plants have thorns or spines to protect themselves from the attack of grazing animals.
(ii) Adaptation refers to the ability of a species to survive in a particular ecological niche, especially because of alterations of form or behaviour brought about through natural selection.
(iii) Other methods of adaptations of organisms are some of the anatomical changes which include mimicry, hibernation and aestivation.
Answered by | 16 Jun, 2014, 06:14: PM
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ANSWERED BY EXPERTCBSE 12-science - Biology
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ANSWERED BY EXPERTCBSE 12-science - Biology
Asked by Topperlearning User | 16 Jun, 2014, 04:14: PM
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