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प्रश्न
Give scientific reason.
Duck-billed platypus shows relationship with mammals.
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उत्तर
- The duck-billed platypus is a connecting link between mammals and reptiles.
- It shows similarity with mammals due to the presence of mammary glands and hairs.
Therefore, Duck-billed platypus shows relationship with mammals.
संबंधित प्रश्न
Give two examples of vestigial organs in human beings and plants.
Explain with an example for the given, how the following provides evidence in favor of evolution in organisms:
Homologous organs
Explain the evolution of giraffe's neck according to Lamarck's theory of evolution.
Identify the following pairs as homologous and analogous organs:
(i) Sweet potato and potato
(ii) Eye of octopus and eye of mammals
(iii) Thorns of Bougainvillaea and tendrils of Cucurbits
(iv) Fore limbs of bat and whale
What do we call the degenerated or partially developed useless organs in living organisms? Enlist such organs in human body? How the same organs are useful in other animals?
Read the following statement and justify the same in your own words with the help of a suitable example.
There is evidence of foetal science among chordates.
Complete the following chart:
Define phylogeny.
______ is a vestigial organ in human beings.
Appendix : vestigial organ : : Peripatus : ____________
Complete the flowchart.
Where is carbon dating used?
Tendons and ligaments are examples of ______.
Analogous organs arise due to ______.
Complete the following chart:
Explain natural selection with the example of industrial melanism.
Write a note on the significance of Palaeontology.
Complete the following conceptual picture:
Give one example of homologous organs found in plants.
Define Palaeontology.
