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प्रश्न
Name the parts shown in the diagram.
Human jaw
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उत्तर
Wisdom teeth
संबंधित प्रश्न
Give two examples of vestigial organs in human beings and plants.
(a) Select the homologous structures from the combinations given below:
(i) Forelimbs of whales and bats
(ii) Tuber of potato and sweet potato
(iii) Eyes of octopus and mammals
(iv) Thorns of Bougainvillea and tendrils of Cucurbita
(b) State the kind of evolution they represent.
Given below is the list of vegetables available in the market. Select from these the two vegetables having homologous structures:
Potato, sweet potato, ginger, radish, tomato, carrot, okra (Lady’s finger)
(A) Potato and sweet potato
(B) Radish and carrot
(C) Okra and sweet potato
(D) Potato and tomato
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?
Differentiate between analogy and homology giving one example each of plant and animal respectively.
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 of the following is a correct set of homologous organs?
(a) Forelimbs of frog, bird and lizard
(b) Spine of cactus and thorn of bougainvillea
(c) Wings of bat and wings of butterfly
(d) Wings of a bird and wings of a bat
Explain the evolution of giraffe's neck according to Lamarck's theory of evolution.
Differentiate between analogous and homologous structures.
The forelimbs of a frog, a bird and a man show the same basic design (or basic structure) of bones. What name is given to such organs?
Out of bacteria, spider, fish and chimpanzee, which organism has a better body design in evolutionary terms? Give reason for your answer.
The organs P and Q of two animals have different structures but similar functions. On the other hand, the two organs R and S of two other animals have the same basic structure but different functions.
(a) What are the organs like P and Q known as?
(b) Name the organs like P and Q. Also name the animals which have such organs.
(c) What are the organs like R and S called?
(d) Name the organs like R and S. Also name the animals which have such organs.
Write short notes based upon the information known to you.
Connecting link
Explain with suitable examples importance of anatomical evidence in evolution.
Complete the following chart:
The most common types of fossils are ------------------------.
Choose the correct option of the following question:
Wings of Insect and Birds are examples of :
What are homologous structures?
Short answer question.
Give the significance of fossils.
I am a connecting link between reptiles and mammals. Who am I?
Give scientific reason.
Peripatus is said to be the connecting link between Annelida and Arthropoda.
Complete the flowchart.
Define the evidence of evolution shown in the figure.
What is carbon dating?
Select the CORRECT set of homologous organs.
Basic principles of embryonic development were pronounced by:
The process of mating of individuals, which are more closing related than the average of the population to which they belong is called ______.
Which is not a vestigial organ in a man?
Flippers of Penguins and Dolphins are examples of:
Did aquatic life forms get fossilised? If, yes where do we come across such fossils?
What are we referring to? When we say 'simple organisms' or 'complex organisms'.
Explain natural selection with the example of industrial melanism.
Evolutionary convergence is the development of a ______.
Write avian characters of Archaeopteryx.
Give one example of homologous organs found in plants.
