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प्रश्न
State the connecting links between Peripatus with Annelida and Arthopoda.
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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
What are vestigial organs?
(a) Select the analogous structures from the combination given below:
(i) Forelimbs of whales and bats
(ii) Eyes of octopus and mammals
(iii) Tuber of sweet potato and potato
(iv) Tuber of Bougainvillea and tendrils of Cucurbita
(b) State the kind of evolution they represent
An example of homologous organs is
Enlist any four sequential evolutionary names of human ancestors.
Give the importance of fossil in support of organic evolution
Differentiate between analogous and homologous structures.
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?
Name two animals having homologous organs and two having analogous organs. Name these organs.
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
Some dinosaurs had feathers although they could not fly birds have feathers that help them to fly. In the context of evolution, this means that ______
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
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
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.
Write short notes based upon the information known to you.
Connecting link
Write the names of those animals in whom some vestigial organs in human body are functioning.
Answer the following question.
Wisdom teeth : Vestigial organs :: Lungfish : ....................
With the help of diagrams, describe emasculation and bagging.
The most common types of fossils are ------------------------.
What do you mean by vestigial structures? Name four vestigial organs found in man.
Explain any three molecular (genetic) evidences in favour of organic evolution.
What are homologous structures?
______ is a vestigial organ in human beings.
Find an odd one out.
Which evidence of evolution is shown in the given picture? Explain the importance of this evidence.
Observe the following images and answer the questions.
- Which evolutionary evidences are indicated in the given picture?
- How are they formed?
- Which method is used to measure their age or their time?
A human hand, a front leg of a cat, a front flipper of a whale and a bat’s wing look dissimilar and adapted for different functions. What is the name given to these organs?
Which of these is not a vestigial organ in human beings?
Palaeontological evidence for evolution refers to the ______.
Basic principles of embryonic development were pronounced by:
Evolutionary convergence is the development of:
Flippers of Penguins and Dolphins are examples of:
Appearance of antibiotic-resistant bacteria is an example of ______.
Give an example for convergent evolution and identify the features towards which they are converging.
What is the function of the appendix of our digestive system?
Write down the difference between homologous and analogous organs.
Complete the following conceptual picture:
Write names of some vestigial organs in the human body.
