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प्रश्न
State the connecting links between Peripatus with Annelida and Arthopoda.
उत्तर
Connecting links between Peripatus and Annelida:
- Segmental nephridia
- Thin cuticle
- Parapodia-like appendages
Connecting links between Peripatus and Arthropoda:
- Trachea
- Open circulation
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संबंधित प्रश्न
Explain with an example for the given, how the following provides evidence in favor of evolution in organisms :
Homologous organs
With the help of any two suitable examples explain the effect of anthropogenic actions on organic evolution.
Four students A, B, C and D reported the following set of organs to be homologous. Who is correct ?
(A) Wings of a bat and a butterfly
(B) Wings of a pigeon and a bat
(C) Wings of a pigeon and a butterfly
(D) Forelimbs of cow, a duck and a lizard
Can the wing of a butterfly and the wing of a bat be considered homologous organs? Why or why not?
Explain the terms analogous and homologous organs with examples.
Give the importance of fossil in support of organic evolution
What are homologous organs?
Differentiate between analogous and homologous structures.
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
Wing of an insect and forelimb of a bird are :
(a) analogous organs
(b) analeptic organs
(c) homologous
(d) homophobic organs
One pair of organs in the following animals are not homologous. This is :
(a) forelimbs in humans and lizard
(b) forelimbs in lizard and frog
(c) wings in butterfly and bat
(d) wings in bat and bird
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
Select a set of homologous organs from the following:
(A) Wings of a bat and wings of a butterfly
(B) Wings of a pigeon and wings of a bat
(C) Wings of a butterfly and wings of a pigeon
(D) Forelimbs of a duck, forelimbs of a cow and forelimbs of a lizard
Write short notes based upon the information known to you.
Connecting link
Write the names of those animals in whom the human body organs are functioning.
The most common types of fossils are ------------------------.
Choose the correct option of the following question:
Wings of Insect and Birds are examples of :
Find an odd one out.
Find an odd one out.
Appendix : vestigial organ : : Peripatus : ____________
The decaying process of C-14 occurs continuously in dead organisms only.
Match the following.
| Column A | Column B |
| 1) Morphological evidences | a) Tail-bone or wisdom teeth |
| 2) Paleontological evidences | b) Leaf venation |
| c) Fossils |
Give scientific reason.
Duck-billed platypus shows relationship with mammals.
Write a short note:
Embryological evidences
Complete the flowchart.
What is carbon dating?
Observe the given images and answer the following questions.
- Which evolutionary evidence does it indicate?
- What does it prove?
- State another example of evolutionary evidence.
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.
Homologous organs and vestigial organs are examples of ______ type of evidence in evolution.
Organs having similar functions but different origin and development are known as:
Which of the following is used as an atmospheric pollution indicator?
Fossils are generally found in ______.
Give an example for convergent evolution and identify the features towards which they are converging.
While creation and presence of variation is directionless, natural selection is directional as it is in the context of adaptation. Comment.
What is the function of the appendix of our digestive system?
Define the term:
Homologous organs
Give a definition of Palaeontology.
Write names of some vestigial organs in the human body.
