Advertisements
Advertisements
Questions
What are vestigial organs?
What are vestigial organs? Give one example.
Advertisements
Solution 1
Vestigial organs are degenerated or underdeveloped organs of organisms which do not perform any function.
Solution 2
Vestigial organs are structures which have no apparent function in a particular organism. Examples: Tailbone, wisdom teeth
APPEARS IN
RELATED QUESTIONS
Give two examples of vestigial organs in human beings and plants.
Explain with an example for the given, how the following provides evidence in favor of evolution in organisms:
Homologous organs
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
Differentiate between analogy and homology giving one example each of plant and animal respectively.
Explain with an example for the given, how the following provides evidence in favor of evolution in organisms :
Analogous organs
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
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
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
Read the following statement and justify the same in your own words with the help of a suitable example.
There is evidence of foetal science among chordates.
Write a short note based on the information known to you.
Connecting link
Write the names of those animals in whom some vestigial organs in human body 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
I am a connecting link between reptiles and mammals. Who am I?
Define the evidence of evolution shown in the figure.
Observe the following images and answer the questions.
- Which evolutionary evidences are indicated in the given picture?
- How are they formed?
- Which method is used to measure their age or their time?
Explain any five types of evidence that support the theory of evolution.
Evolutionary convergence is the development of:
Complete the following diagram:
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.
