Advertisements
Advertisements
प्रश्न
Write avian characters of Archaeopteryx.
Advertisements
उत्तर
- Feathery exoskeleton.
- Forelimbs are modified into wings.
- Jaws are modified into beak.
- Skull bone is completely fused.
- Large rounded cranium.
- Cranium with large orbits and a single condyle.
- Limb bones are bird like.
- Hind limbs with four toes first toe is opposible.
APPEARS IN
संबंधित प्रश्न
Name two animals having homologous organs and two having analogous organs. Name these organs.
The wings of a housefly and the wings of a sparrow are an example of :
(a) analogous organs
(b) vestigial organs
(c) respiratory organs
(d) homologous organs
Write the names of those animals in whom some vestigial organs in human body are functioning.
Observe the picture and answer the following questions.
A) Which evidence of evolution is shown in the picture?
B) What can be proven with this proof?
C) Give one more example of evidence of evolution
Which of these is not a vestigial organ in human beings?
Where is carbon dating used?
Evolutionary convergence is the development of:
While creation and presence of variation is directionless, natural selection is directional as it is in the context of adaptation. Comment.
Explain natural selection with the example of industrial melanism.
Write a note on the significance of Palaeontology.
