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प्रश्न
Write a short note:
Embryological evidences
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उत्तर
- Embryological evidences arise from comparative study of embryological developmental stages of various vertebrates.
- Embryos of different vertebrates appear similar during the initial stages of development and these similarities gradually decrease as the embryo develops.
- Embryology can be used as evidence of evolution as similarities in initial stages of development indicate common origin of the animals.
APPEARS IN
संबंधित प्रश्न
Mammals : _________ : : Amphibia : Fishes
“Two areas of study namely 'evolution' and 'classification' are interlinked'. Justify this statement.
Differentiate between analogy and homology giving one example each of plant and animal respectively.
Explain with an example for the given, how the following provides evidence in favor of evolution in organisms :
Fossils
How do homologous organs help in providing evidence for organic evolution?
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
Draw a labelled diagram of T.S. of a leaf showing Kranz anatomy.
Very short answer question:
What is vestigeal organ?
Explain the importance of Anatomical evidences with examples.
Complete the flowchart.
Biogenetic law states that ______.
Select the correct statement.
Evolution has exhibited a greater stability of molecular structure when compared with morphological structures. Comment on the statement and justify your opinion.
Study of fossils is ______.
Organs having similar functions but different origin and development are known as:
Which of the following is used as an atmospheric pollution indicator?
What are we referring to? When we say 'simple organisms' or 'complex organisms'.
How do we compute the age of a fossil?
Write avian characters of Archaeopteryx.
