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प्रश्न
Which evidence of evolution is shown in the given picture? Explain the importance of this evidence.
उत्तर
The given diagrams depict anatomical similarities between the human hand, foreleg of the ox, forelimb of the bat, and flipper of the whale.
- Anatomical evidence are the similarities in structures and anatomy between different organisms.
- The hand of human, foreleg of ox, flipper of the whale, and forelimb of bat appear different superficially or morphologically.
- Also, the function of these structures is different in different animals.
- However, there is a similarity in the structure of bones and bony joints in the organs of these animals.
- These similarities indicate that the animals evolved from a common ancestor thus providing proof of evolution.
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संबंधित प्रश्न
Study the following statements:-
I. Wings of birds and wings of bats are homologous organs.
II. Wings of birds and wings of insects are modified forelimbs.
III. Wings of birds and wings of insects are analogous organs.
IV. Wings of birds and forelimbs of horse are homologous organs.
The correct statements are
(A) I and II
(B) II and III
(C) III and IV
(D) I and IV
How analogy and homology considered as an evidence in support of evolution ?
Four students A, B, C and D reported the following set of organs to be homologous. Who is correct ?
(A) Wings of a bat and a butterfly
(B) Wings of a pigeon and a bat
(C) Wings of a pigeon and a butterfly
(D) Forelimbs of cow, a duck and a lizard
Four students P, Q, R and S differently reported the following set of organs to be analogous :
P. Forelimb of a frog and forelimb of a lizard
Q. Forelimb of a bird and forelimb of a human
R. Wings of a parrot and wings of a butterfly
S. Wings of a bird and wings of a bat
The two students who have reported correctly are :
(A) P and Q
(B) Q and R
(C) R and S
(D) P and S
An example of homologous organs is
Attempt giving a clear definition of the term species.
Name the scientists who Discovered the fossil of Australopithecus
Human tailbone is a vestigial organ. Explain.
Select and write analogous structures from the list given below :
1) Wings of butterfly and birds
2) Vertebrate hearts
3) Tendrils of Bougainvillea and Cucurbita
4) Tubers of sweet potato and potato
The organs which perform different functions but have the same basic structure are known as :
(a) homologous organs
(b) analogous organs
(c) homolytic organs
(d) analytic organs
Write the names of those animals in whom the human body organs are functioning.
_______ is a connecting link between Annelida and Arthropoda.
Complete the following chart:
“Appearance of melanised moths post-industrialisation in England is a classic example of evolution by natural selection.” Explain.
With the help of diagrams, describe emasculation and bagging.
The most common types of fossils are ------------------------.
What do you mean by vestigial structures? Name four vestigial organs found in man.
Differentiate between connecting links and the missing links.
Very short answer question.
What are homologous organs?
Long answer question.
Would you consider wings of butterfly and bat as homologous or analogous and why?
I am a connecting link between reptiles and mammals. Who am I?
Give scientific reason.
Duck-billed platypus shows relationship with mammals.
Enlist the evidences of evolution.
What is carbon dating?
Explain any five types of evidence that support the theory of evolution.
Biogenetic law states that ______.
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 set of homologous organs.
Basic principles of embryonic development were pronounced by:
Evolutionary convergence is the development of:
The presence of gill slits, in the embryos of all vertebrates, supports the theory of ______.
The bones of forelimbs of whale, bat, cheetah and man are similar in structure, because ______.
Give an example for convergent evolution and identify the features towards which they are converging.
While creation and presence of variation is directionless, natural selection is directional as it is in the context of adaptation. Comment.
I am the connecting link of annelida and arthropoda. What is my name?
Give a scientific reason.
Morphological evidences suggest that dog, sheep and wolf have a common origin.
Define the term:
Homologous organs
Give a definition of Palaeontology.
Pick the odd man out:
