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Question
Find an odd one out.
Options
Leaf venation
Size of seeds
Leaf petiole
Leaf shape
Solution
Size of seeds
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RELATED QUESTIONS
What are vestigial organs?
Give two examples of vestigial organs in human beings and plants.
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
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.
Give the importance of fossil in support of organic evolution
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?
Human tailbone is a vestigial organ. Explain.
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
X, Y, and Z are three animals. The animal X can fly but animal Y can only run on ground or walls. The forelimbs of animals X and Y have the same basic design but they are used for different purposes such as flying and running respectively. The animal Z became extinct an long time ago. The study of fossils of Z tells us that it had some features like those of X and some like those of Y. In fact, Z is said to form a connecting link in the evolutionary chain of X and Y.
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(b) What name is given to the forelimbs like those of X and Y which have the same basic design but different functions?
(c) Name one feature in which Z resembled X.
(d) Name one feature in which Z resembled Y.
(e) Which is the correct evolutionary chain involving X, Y and Z : X → Z → Y or Y → Z → X?
In a class, students were asked to observe the models/slides/pictures of the skeletons of forelimbs and wings of different organisms. After the observations the students made the following groups of homologous structures. Select the correct group :
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(B) Wings of a pigeon and a bat
(C) Wings of a butterfly and a bat
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Vestigial organ ______ present in human body is proof of evolution.
Write short notes based upon the information known to you.
Connecting link
Explain with suitable examples importance of anatomical evidence in evolution.
Short answer question.
Give the significance of fossils.
Explain the importance of Anatomical evidences with examples.
_____________ is a vestigial organ in human beings.
Match the following.
| Column A | Column B |
| 1) Morphological evidences | a) Tail-bone or wisdom teeth |
| 2) Paleontological evidences | b) Leaf venation |
| c) Fossils |
Give scientific reason.
Peripatus is said to be the connecting link between Annelida and Arthropoda.
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?
Which of these is not a vestigial organ in human beings?
The presence of gill slits, in the embryos of all vertebrates, supports the theory of ______.
Flippers of Penguins and Dolphins are examples of:
Which of the following is used as an atmospheric pollution indicator?
Analogous organs arise due to ______.
Fossils are generally found in ______.
What were the characteristics of life forms that had been fossilised?
Did aquatic life forms get fossilised? If, yes where do we come across such fossils?
How do we compute the age of a fossil?
While creation and presence of variation is directionless, natural selection is directional as it is in the context of adaptation. Comment.
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.
Find odd one out:
Write down the difference between homologous and analogous organs.
Evolutionary convergence is the development of a ______.
