English
Maharashtra State BoardSSC (English Medium) 10th Standard

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

Advertisements
Advertisements

Question

Define the evidence of evolution shown in the figure.

Definition
Short/Brief Note
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.

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

APPEARS IN

SCERT Maharashtra Science and Technology 2 [English] 10 Standard SSC
Chapter 1 Heredity and Evolution
Solve the following questions | Q 8

RELATED QUESTIONS

(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.


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


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


Which one of the following pairs of vegetables is an example of homologous structures?

(A) Potato and sweet potato

(B) Carrot and radish

(C) Carrot and tomato

(D) Tomato and radish


 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.


Attempt giving a clear definition of the term species.


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

Analogous organs


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

 

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 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 ______


There are five animals A, B, C, D and E. The animal A uses its modified forelimbs for flying. The animal B uses its forelimbs for running whereas the animal C uses its forelimbs for grasping. The animal D can live on land as well as in water and uses its forelimbs to prop up the front end of its body when at rest. The animal E which respires by using spiracles and tracheae uses wings for flying but its wings are analogous to the modified forelimbs of animal A.
(a) What could the animals A, B, C, D and E be?
(b) Why are the forelimbs of animals A, B, C, D called homologous organs?
(c) What does the existence of homologous organs in animals A, B, C and D tell us about their ancestors ?
(d) Why are the modified forelimbs of animal A and the wings of animal E called analogous organs?
(e) State whether animals A and E have a common ancestor or not.


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?


Explain with suitable examples 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. 


What do you mean by vestigial structures? Name four vestigial organs found in man.


Define fossil.


Define phylogeny.


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?


______ is a vestigial organ in human beings.


Find an odd one out.


Appendix : vestigial organ : : Peripatus : ____________


The decaying process of C-14 occurs continuously in dead organisms only.


Write a short note:

Embryological evidences


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.

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 ______.


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


How do we compute the age of a living tree?


Give a scientific reason.

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


Write down the difference between homologous and analogous organs.


Define the term:

Homologous organs


Give one example of homologous organs found in plants.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×