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प्रश्न
Write the answers to the questions by observing the figure below.
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| (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.
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उत्तर
- ‘(a)’ - Duck billed platypus
- ‘(b)’ - Lungfish
- ‘(c)’ - Peripatus
- The evolutionary evidence illustrated in the given figure is connecting links.
- Definition: Connecting links are some plants or animals that show morphological characters by which they can be related to two different groups of organisms.
संबंधित प्रश्न
Give two examples of vestigial organs in human beings and plants.
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.
Explain the evolution of giraffe's neck according to Lamarck's theory of evolution.
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
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
Write a short note based on the information known to you.
Embryology
Write the names of those animals in whom some vestigial organs in human body are functioning.
“Appearance of melanised moths post-industrialisation in England is a classic example of evolution by natural selection.” Explain.
What are homologous structures?
Very short answer question:
What is vestigeal organ?
______ is a vestigial organ in human beings.
Select the CORRECT match.
How do we compute the age of a fossil?
Complete the following diagram:
Give a scientific reason.
Morphological evidences suggest that dog, sheep and wolf have a common origin.
Write avian characters of Archaeopteryx.
Define the term:
Homologous organs
Define Palaeontology.
