Advertisements
Advertisements
Question
Define the evidence of evolution shown in the figure.
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.
APPEARS IN
RELATED QUESTIONS
Mammals : _________ : : Amphibia : Fishes
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
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
“Two areas of study namely 'evolution' and 'classification' are interlinked'. Justify this statement.
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
Can the wing of a butterfly and the wing of a bat be considered homologous organs? Why or why not?
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
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 organisms indicates that they are derived from the same ancestor?
(a) analogous organs
(b) respiratory organs
(c) digestive organs
(d) homologous 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
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
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
Write short notes based upon the information known to you.
Embryology
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.
Differentiate between connecting links and the missing links.
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.
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.
Name the parts shown in the diagram.
Human jaw
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 |
The fossil remains of Archaeopteryx is a connecting link between ______
Homologous organs are:
The study of fossil evidence of evolution is called ______
Appearance of antibiotic-resistant bacteria is an example of ______.
Did aquatic life forms get fossilised? If, yes where do we come across such fossils?
How do we compute the age of a living tree?
Give an example for convergent evolution and identify the features towards which they are converging.
The evolutionary story of moths in England during industrialisation reveals, that 'evolution is apparently reversible'. Clarify this statement.
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:
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.
