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प्रश्न
Similarities in the initial stages indicate the _______ evidence.
विकल्प
Connecting links
Anatomical
Embryological
Palaeontological
उत्तर
Similarities in the initial stages indicate the Embryological evidence.
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संबंधित प्रश्न
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
Find out from newspapers and popular science articles any new fossil discoveries or controversies about evolution.
Attempt giving a clear definition of the term species.
What are homologous organs?
Differentiate between analogous and homologous structures.
Out of bacteria, spider, fish and chimpanzee, which organism has a better body design in evolutionary terms? Give reason for your answer.
Identify the following pairs as homologous and analogous organs:
(i) Sweet potato and potato
(ii) Eye of octopus and eye of mammals
(iii) Thorns of Bougainvillaea and tendrils of Cucurbits
(iv) Fore limbs of bat and whale
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
What do we call the degenerated or partially developed useless organs in living organisms? Enlist such organs in human body? How the same organs are useful in other animals?
Read the following statement and justify same in your own words with the help of suitable example.
There is evidences of fatal science among chordates.
_______ is a connecting link between Annelida and Arthropoda.
With the help of diagrams, describe emasculation and bagging.
Explain any three molecular (genetic) evidences in favour of organic evolution.
Define fossil.
Define phylogeny.
Answer the following question:
What are homologous structures? Give an example. Is it necessary that homologous structures always have a common ancestor? Justify your answer.
Very short answer question.
What are homologous organs?
Explain the importance of Anatomical evidences with examples.
Find an odd one out.
Match the following.
| Column A | Column B |
| 1) Morphological evidences | a) Tail-bone or wisdom teeth |
| 2) Paleontological evidences | b) Leaf venation |
| c) Fossils |
Define the evidence of evolution shown in the figure.
How do you differentiate homologous organs from analogous organs?
Homologous organs and vestigial organs are examples of ______ type of evidence in evolution.
Select the CORRECT set of homologous organs.
The fossil remains of Archaeopteryx is a connecting link between ______
Where is carbon dating used?
- Define vestigial organs.
- Write names of any two vestigial organs in the human body.
- Write name of those animals in which these vestigial organs are functional.
The presence of gill slits, in the embryos of all vertebrates, supports the theory of ______.
Animal husbandry and plant breeding programmes are the examples of ______.
While creation and presence of variation is directionless, natural selection is directional as it is in the context of adaptation. Comment.
Complete the following diagram:
Give a scientific reason.
Morphological evidences suggest that dog, sheep and wolf have a common origin.
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.
Write down the difference between homologous and analogous organs.
Write avian characters of Archaeopteryx.
Define the term:
Homologous organs
Write names of some vestigial organs in the human body.
