Define vestigial organs - Science and Technology 2

Advertisements
Advertisements
Definition

Define vestigial organs

Advertisements

Solution

Vestigial organs are degenerate organs that are inadequately developed and non-functional. They could be useful in certain related and unrelated species, as well as in ancestors.

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

APPEARS IN

SCERT Maharashtra Question Bank 10th Standard SSC Science and Technology 2 Maharashtra State Board
Chapter 1 Heredity and Evolution
Answer the following questions | Q 5.1
Balbharati Science and Technology Part 2 10th Standard SSC Maharashtra State Board
Chapter 1 Heredity and Evolution
Exercises | Q 6.1 | Page 11

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.


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

Homologous organs


Which of the following pairs of two vegetables represent the correct homologous structures?

(A) Sweet potato and potato

(B) Sweet potato and tomato

(C) Carrot and potato

(D) Radish and carrot


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


Write the similarity between the wing of a butterfly and the wing of a bat. What do you infer from the above with reference to evolution? 


If you are asked to select a group of two vegetables, out of the following, having homologous structures which one would you select?

(a) Carrot and radish

(b) Potato and sweet potato

(c) Potato and tomato

(d) Lady finger and potato


How analogy and homology considered as an evidence in support of evolution ?


 Explain the terms analogous and homologous organs with examples.


Try to trace the various components of human evolution (hint: brain size and function, skeletal structure, dietary preference, etc.)


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.


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?

 

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


The presence of which of the following types of organs in two animals indicates that they are not derived from a common ancestor?
(a) homologous organs
(b) excretory organs
(c) analogous organs
(d) reproductive 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


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


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?


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


Write short notes based upon the information known to you.

Embryology


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


_______ is a connecting link between Annelida and Arthropoda.


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


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


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?


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?


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?


Name the parts shown in the diagram.
Human jaw


Appendix : vestigial organ : : Peripatus : ____________


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


Enlist the evidences of evolution.


Define the evidence of evolution shown in the figure.


What is carbon dating?


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.


Which of these is not a vestigial organ in human beings?


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:


Animal husbandry and plant breeding programmes are the examples of ______.


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


How do we compute the age of a rock?


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


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


As shown in figure below some organisms that share a common ancestor have features that have different functions, but similar structures.

These are known as ______. Give example.


Write down the difference between homologous and analogous organs.


Find the odd one out:


Explain natural selection with the example of industrial melanism.


Write a note on the significance of Palaeontology.


Define the term:

Homologous organs


Industrial melanism was highlighted by ______.


Give examples of homologous organs and analogous organs in plants.


Give a definition of Palaeontology.


Pick the odd man out:


Share
Notifications



      Forgot password?
Use app×