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प्रश्न
Give a scientific reason.
Morphological evidences suggest that dog, sheep and wolf have a common origin.
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उत्तर
The similarities between dog, sheep, and wolves' jaw structures, eye positions, nare structures, and other anatomical features show that these three animals share a common ancestor.
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संबंधित प्रश्न
Differentiate between homology and analogy. Give one example of each.
Write the similarity between the wing of a butterfly and the wing of a bat. What do you infer from the above with reference to evolution?
Select two pairs from the following which exhibit divergent evolution. Give reasons for your answer.
(i) Forelimbs of cheetah and mammals
(ii) Flippers of dolphins and penguins
(iii) Wings of butterflies and birds
(iv) Forelimbs of whales and mammals
State a reason for the increased population of dark coloured moths coinciding with the loss of lichens (on tree barks) during industrialization period in England.
Which one of the following pairs of vegetables is an example of homologous structures?
(A) Potato and sweet potato
(B) Carrot and radish
(C) Carrot and tomato
(D) Tomato and radish
Name the scientists who Discovered the fossil of Australopithecus
Name two animals having homologous organs and two having analogous organs. Name these organs.
The presence of which of the following types of organs in two animals indicates that they are not derived from a common ancestor?
(a) homologous organs
(b) excretory organs
(c) analogous organs
(d) reproductive organs
Write a short note based on the information known to you.
Embryology
Define phylogeny.
Write a short note:
Embryological evidences
Define the evidence of evolution shown in the figure.
Observe the following images and answer the questions.
- Which evolutionary evidences are indicated in the given picture?
- How are they formed?
- Which method is used to measure their age or their time?
A human hand, a front leg of a cat, a front flipper of a whale and a bat’s wing look dissimilar and adapted for different functions. What is the name given to these organs?
Select the CORRECT match.
The fossil remains of Archaeopteryx is a connecting link between ______
Which is not a vestigial organ in a man?
What is the function of the appendix of our digestive system?
Find the odd one out:
Write a note on the significance of Palaeontology.
