An Example of Homologous Organs is - Science

Advertisements
Advertisements
MCQ

 An example of homologous organs is

Options

  • our arm and a dog’s fore-leg.

  • our teeth and an elephant’s tusks.

  • potato and runners of grass.

  • all of the above.

Advertisements

Solution

all of the above.

  Is there an error in this question or solution?
Chapter 9: Heredity and Evolution - Exercises [Page 159]

APPEARS IN

NCERT Science Class 10
Chapter 9 Heredity and Evolution
Exercises | Q 2 | Page 159

RELATED QUESTIONS

State the connecting links between Peripatus with Annelida and Arthopoda.


What are vestigial organs?


(a) Select the homologous structures from the combinations given below:

(i) Forelimbs of whales and bats

(ii) Tuber of potato and sweet potato

(iii) Eyes of octopus and mammals

(iv) Thorns of Bougainvillea and tendrils of Cucurbita

 

(b) State the kind of evolution they represent.


(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


“Two areas of study namely 'evolution' and 'classification' are interlinked'. Justify this statement.


State a reason for the increased population of dark coloured moths coinciding with the loss of lichens (on tree barks) during industrialization period in England.


Which of the following is a correct set of homologous organs?

(a) Forelimbs of frog, bird and lizard

(b) Spine of cactus and thorn of bougainvillea

(c) Wings of bat and wings of butterfly

(d) Wings of a bird and wings of a bat


Can the wing of a butterfly and the wing of a bat be considered homologous organs? Why or why not?


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


Give the importance of fossil in support of organic 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?


The organs which perform different functions but have the same basic structure are known as :
(a) homologous organs
(b) analogous organs
(c) homolytic organs
(d) analytic 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


 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


You have potato, carrot, radish, sweet potato, tomato and ginger bought from the market in your jute bag. Identify two vegetables to represent the correct homologous structures.

(A) Potato and tomato

(B) Carrot and tomato

(C) Potato and sweet potato

(D) Carrot and radish


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 the names of those animals in whom the human body organs are functioning.


Answer the following question.

Explain with suitable examples the importance of anatomical evidence in evolution.


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


With the help of diagrams, describe emasculation and bagging. 


Draw a labelled diagram of T.S. of a leaf showing Kranz anatomy. 


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.


Find an odd one out.


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


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.

Vertebrates have slowly originated from invertebrates.


Give scientific reason.

Duck-billed platypus shows relationship with mammals.


Write a short note:

Embryological evidences


Complete the flowchart.


Enlist the evidences of evolution.


Define the evidence of evolution shown in the figure.


Which evidence of evolution is shown in the given picture? Explain the importance of this evidence.


Write the answers to the questions by observing the figure below.

(a) (b) (c)
  1. Write the name of the animal ‘(a)’ in the figure.
  2. Write the name of the animal ‘(b)’ in the figure.
  3. Write the name of the animal ‘(c)’ in the figure.
  4. Which evolutionary evidence is illustrated by this figure?
  5. Write the definition of that evidence for 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.


The fossil remains of Archaeopteryx is a connecting link between ______ 


Define vestigial organs


Evolution has exhibited a greater stability of molecular structure when compared with morphological structures. Comment on the statement and justify your opinion.


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:


Analogous organs arise due to ______.


Fossils are generally found in ______.


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.


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:


I am the connecting link of annelida and arthropoda. What is my name?


Give a scientific reason.

Morphological evidences suggest that dog, sheep and wolf have a common origin.


Find the odd one out:


Write a note on the significance of Palaeontology.


Define the term:

Homologous organs


Industrial melanism was highlighted by ______.


Write names of some vestigial organs in the human body.


Share
Notifications



      Forgot password?
Use app×