Define the evidence of evolution shown in the figure. - Science and Technology 2

Advertisements
Advertisements
Definition
Short Note

Define the evidence of evolution shown in the figure.

Advertisements

Solution

The evidence of evolution indicated in the given diagram is vestigial organ.

Vestigial organs: Vestigial organs are useless organs that are degenerated or underdeveloped due to non-functionality through several years.

  Is there an error in this question or solution?
Chapter 1: Heredity and Evolution - Solve the following questions

APPEARS IN

SCERT Maharashtra Question Bank 10th Standard SSC Science and Technology 2 Maharashtra State Board
Chapter 1 Heredity and Evolution
Solve the following questions | Q 8

RELATED QUESTIONS

Mammals : _________ : : Amphibia : Fishes


State the connecting links between Peripatus with Annelida and Arthopoda.


What are vestigial organs?


Give two examples of vestigial organs  in human beings and plants.


Given below is the list of vegetables available in the market. Select from these the two vegetables having homologous structures:

Potato, sweet potato, ginger, radish, tomato, carrot, okra (Lady’s finger)

(A) Potato and sweet potato

(B) Radish and carrot

(C) Okra and sweet potato

(D) Potato and tomato


Study the following statements:-

I. Wings of birds and wings of bats are homologous organs.

II. Wings of birds and wings of insects are modified forelimbs.

III. Wings of birds and wings of insects are analogous organs.

IV. Wings of birds and forelimbs of horse are homologous organs.

The correct statements are

(A) I and II

(B) II and III

(C) III and IV

(D) I and IV


Select two pairs from the following which exhibit divergent evolution. Give reasons for your answer.

(i) Forelimbs of cheetah and mammals

(ii) Flippers of dolphins and penguins

(iii) Wings of butterflies and birds

(iv) Forelimbs of whales and mammals


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.


Find out from newspapers and popular science articles any new fossil discoveries or controversies about evolution.


Name the scientists who Discovered the fossil of Australopithecus


Explain the evolution of giraffe's neck according to Lamarck's theory of evolution.


Name any two temporary embryonic structures in vertebrates which provide evidence for evolution.


What are homologous organs?


How do homologous organs help in providing evidence for organic evolution?


Human tailbone is a vestigial organ. Explain.


Differentiate between analogous and homologous structures.


Name two animals having homologous organs and two having analogous organs. Name these 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


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


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.


Vestigial organ ______ present in human body is proof of evolution.


Write short notes based upon the information known to you.

Embryology


Write short notes based upon the information known to you.

Connecting link


Answer the following question.
Wisdom teeth : Vestigial organs :: Lungfish : ....................


“Appearance of melanised moths post-industrialisation in England is a classic example of evolution by natural selection.” Explain.


The most common types of fossils are ------------------------. 


Choose the correct option of the following question:

Wings of Insect and Birds are examples of :


Explain any three molecular (genetic) evidences in favour of organic evolution.


Define fossils. 


Differentiate between connecting links and the missing links.


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?


Very short answer question.

What is vestigeal organ?


Short answer question.

Give the significance of fossils.


Long answer question.

Would you consider wings of butterfly and bat as homologous or analogous and why?


Explain the importance of Anatomical evidences with examples.


Find an odd one out.


I am a connecting link between reptiles and mammals. Who am I?


Name the parts shown in the diagram.
Human jaw


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.

Peripatus is said to be the connecting link between Annelida and Arthropoda.


Give scientific reason.

Duck-billed platypus shows relationship with mammals.


Write a short note:

Embryological evidences


Complete the flowchart.


Enlist the evidences of evolution.


Observe the given images and answer the following questions.

  1. Which evolutionary evidence does it indicate?
  2. What does it prove?
  3. State another example of evolutionary evidence.

Explain any five types of evidence that support the theory of evolution.


Biogenetic law states that ______.


The degenerated and non-functional organs found in an organism are called ______.


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?


How do you differentiate homologous organs from analogous organs?


Select vestigial organs from the following.


Homologous organs and vestigial organs are examples of ______ type of evidence in evolution.


Select the correct statement.


Select the CORRECT match.


Select the CORRECT set of homologous organs.


Define vestigial organs


Why do all the gametes formed in human females have an X chromosome?


Homologous organs are:


Cucurbits do not develop thick and woody stem as they are:


Tendons and ligaments are examples of ______.


Palaeontological evidence for evolution refers to the ______.


Basic principles of embryonic development were pronounced by:


Study of fossils is ______.


Evolutionary convergence is the development of:


The process of mating of individuals, which are more closing related than the average of the population to which they belong is called ______.


The presence of gill slits, in the embryos of all vertebrates, supports the theory of ______.


Which is not a vestigial organ in a man?


Flippers of Penguins and Dolphins are examples of: 


The study of fossil evidence of evolution is called ______


Organs having similar functions but different origin and development are known as:


What were the characteristics of life forms that had been fossilised?


Give an example for convergent evolution and identify the features towards which they are converging.


How do we compute the age of a rock?


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:


Complete the following chart:


What is the function of the appendix of our digestive system?


Find odd one out:


Write down the difference between homologous and analogous organs.


Evolutionary convergence is the development of a ______.


Write avian characters of Archaeopteryx.


Write a note on the significance of Palaeontology.


Define the term:

Homologous organs


Industrial melanism was highlighted by ______.


Share
Notifications



      Forgot password?
Use app×