Differentiate Between Analogous and Homologous Structures. - Biology

Advertisements
Advertisements

Differentiate between analogous and homologous structures.

Advertisements

Solution

Analogous Structures Homologous Structures
These structures have similarity in function, but different internal structures. These structures have similarity in internal structures, but different functions.
They are based on convergent evolution. They are based on divergent evolution.
For example, flippers of penguin and dolphins. For example, forelimbs of man and bats,
  Is there an error in this question or solution?
2017-2018 (March) Delhi Set 3

Video TutorialsVIEW ALL [1]

RELATED QUESTIONS

Mammals : _________ : : Amphibia : Fishes


What are vestigial organs?


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


(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


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


With the help of any two suitable examples explain the effect of anthropogenic actions on organic evolution.


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


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


Four students P, Q, R and S differently reported the following set of organs to be analogous :

P. Forelimb of a frog and forelimb of a lizard

Q. Forelimb of a bird and forelimb of a human

R. Wings of a parrot and wings of a butterfly

S. Wings of a bird and wings of a bat

The two students who have reported correctly are :

(A) P and Q

(B) Q and R

(C) R and S

(D) P and S


Enlist any four sequential evolutionary names of human ancestors.


Explain with an example for the given, how the following provides evidence in favor of evolution in organisms :

Fossils


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.


Select and write analogous structures from the list given below :

1) Wings of butterfly and birds

2) Vertebrate hearts

3) Tendrils of Bougainvillea and Cucurbita

4) Tubers of sweet potato and potato


Out of bacteria, spider, fish and chimpanzee, which organism has a better body design in evolutionary terms? Give reason for your answer.


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


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


 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


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


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


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.


Observe the picture and answer the following questions.
A) Which evidence of evolution is shown in the picture?
B) What can be proven with this proof?
C) Give one more example of evidence of evolution


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


Complete the following chart:


With the help of diagrams, describe emasculation and bagging. 


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


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.


Very short answer question.

What are homologous organs?


Very short answer question.

What is vestigeal organ?


Long answer question.

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


Similarities in the initial stages indicate the _______ evidence.


Find an odd one out.


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 : ____________


Give scientific reason.

Vertebrates have slowly originated from invertebrates.


Write a short note:

Embryological evidences


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.


Observe the following images and answer the questions.

  1. Which evolutionary evidences are indicated in the given picture?
  2. How are they formed?
  3. Which method is used to measure their age or their time?

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.


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 are we referring to? When we say 'simple organisms' or 'complex organisms'.


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


How do we compute the age of a rock?


Explain divergent evolution in detail. What is the driving force behind it?


You have studied the story of Pepper moths in England. Had the industries been removed, what impact could it have on the moth population? Discuss.


Complete the following diagram:


Complete the following chart:


Give a scientific reason.

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


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


Write down the difference between homologous and analogous organs.


Find the odd one out:


Define the term:

Homologous organs


Industrial melanism was highlighted by ______.


Complete the following conceptual picture:


Give a definition of Palaeontology.


Pick the odd man out:


Share
Notifications



      Forgot password?
Use app×