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प्रश्न
_______ is a connecting link between Annelida and Arthropoda.
पर्याय
Duck-billed platypus
Peripatus
Lungfish
Whale
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उत्तर
Peripatus is a connecting link between Annelida and Arthropoda.
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संबंधित प्रश्न
Give two examples of vestigial organs in human beings and plants.
Differentiate between homology and analogy. Give one example of each.
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
Name any two temporary embryonic structures in vertebrates which provide evidence for evolution.
What are homologous organs?
How do homologous organs help in providing evidence for organic evolution?
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?
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
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.
In a class, students were asked to observe the models/slides/pictures of the skeletons of forelimbs and wings of different organisms. After the observations the students made the following groups of homologous structures. Select the correct group :
(A) Wings of a bird and a butterfly
(B) Wings of a pigeon and a bat
(C) Wings of a butterfly and a bat
(D) Forelimbs of a cow, a duck and a lizard
Answer the following question.
Wisdom teeth : Vestigial organs :: Lungfish : ....................
What do you mean by vestigial structures? Name four vestigial organs found in man.
Define fossil.
Short answer question.
Give the significance of fossils.
Explain the importance of Anatomical evidences with examples.
Name the parts shown in the diagram.
Human jaw
Define the evidence of evolution shown in the figure.
Write the answers to the questions by observing the figure below.
 |
 |
 |
| (a) | (b) | (c) |
- Write the name of the animal ‘(a)’ in the figure.
- Write the name of the animal ‘(b)’ in the figure.
- Write the name of the animal ‘(c)’ in the figure.
- Which evolutionary evidence is illustrated by this figure?
- Write the definition of that evidence for evolution.
The degenerated and non-functional organs found in an organism are called ______.
Homologous organs and vestigial organs are examples of ______ type of evidence in evolution.
Select the CORRECT set of homologous organs.
Homologous organs are:
Cucurbits do not develop thick and woody stem as they are:
Tendons and ligaments are examples of ______.
Palaeontological evidence for evolution refers to the ______.
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 ______.
The presence of gill slits, in the embryos of all vertebrates, supports the theory of ______.
Which is not a vestigial organ in a man?
Organs having similar functions but different origin and development are known as:
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.
Give a scientific reason.
Morphological evidences suggest that dog, sheep and wolf have a common origin.
What is the function of the appendix of our digestive system?
As shown in figure below some organisms that share a common ancestor have features that have different functions, but similar structures.
These are known as ______. Give example.
Evolutionary convergence is the development of a ______.
