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प्रश्न
Pick the odd man out:
पर्याय
duckbill platypus
pomfret
lungfish
peripatus
उत्तर
pomfret
Explanation:
In Peripatus, characters like segmented body, thin cuticle, and parapodia-like organs are present. Similarly, duck-billed platypus lays eggs like reptiles but shows relationships with mammals too due to the presence of mammary glands and hairs. Lungfish perform respiration with lungs, irrespective of being fish. These examples indicate that mammals are evolved from reptiles and amphibians from fish.
APPEARS IN
संबंधित प्रश्न
(a) Select the analogous structures from the combination given below:
(i) Forelimbs of whales and bats
(ii) Eyes of octopus and mammals
(iii) Tuber of sweet potato and potato
(iv) Tuber of Bougainvillea and tendrils of Cucurbita
(b) State the kind of evolution they represent
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?
How analogy and homology considered as an evidence in support of evolution ?
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.
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
Can the wing of a butterfly and the wing of a bat be considered homologous organs? Why or why not?
Give the importance of fossil in support of organic evolution
Human tailbone is a vestigial organ. Explain.
The organs which perform similar functions but have different basic structure are called :
(a) asymmetric organs
(b) analogous organs
(c) homologous organs
(d) homophonic organs
The presence of which of the following types of organs in two organisms indicates that they are derived from the same ancestor?
(a) analogous organs
(b) respiratory organs
(c) digestive organs
(d) homologous organs
Select a set of homologous organs from the following:
(A) Wings of a bat and wings of a butterfly
(B) Wings of a pigeon and wings of a bat
(C) Wings of a butterfly and wings of a pigeon
(D) Forelimbs of a duck, forelimbs of a cow and forelimbs of a lizard
Write short notes based upon the information known to you.
Connecting link
Explain with suitable examples importance of anatomical evidence in evolution.
_______ is a connecting link between Annelida and Arthropoda.
What do you mean by vestigial structures? Name four vestigial organs found in man.
Choose the correct option of the following question:
Wings of Insect and Birds are examples of :
Long answer question.
Would you consider wings of butterfly and bat as homologous or analogous and why?
Explain the importance of Anatomical evidences with examples.
Similarities in the initial stages indicate the _______ evidence.
_____________ is a vestigial organ in human beings.
Appendix : vestigial organ : : Peripatus : ____________
Give scientific reason.
Peripatus is said to be the connecting link between Annelida and Arthropoda.
Write a short note:
Embryological evidences
Define the evidence of evolution shown in the figure.
What is carbon dating?
Observe the given images and answer the following questions.
- Which evolutionary evidence does it indicate?
- What does it prove?
- State another example of evolutionary evidence.
Explain any five types of evidence that support the theory of evolution.
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?
How do you differentiate homologous organs from analogous organs?
Select the correct statement.
Which is not a vestigial organ in a man?
The study of fossil evidence of evolution is called ______
Which of the following is used as an atmospheric pollution indicator?
Appearance of antibiotic-resistant bacteria is an example of ______.
How do we compute the age of a living tree?
While creation and presence of variation is directionless, natural selection is directional as it is in the context of adaptation. Comment.
Define the term:
Homologous organs
Give examples of homologous organs and analogous organs in plants.
Give a definition of Palaeontology.
