Advertisements
Advertisements
प्रश्न
Name the parts shown in the diagram.
Human jaw
Advertisements
उत्तर
Wisdom teeth
संबंधित प्रश्न
Mammals : _________ : : Amphibia : Fishes
Give two examples of vestigial organs in human beings and plants.
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
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?
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
How analogy and homology considered as an evidence in support of evolution ?
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 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
Find out from newspapers and popular science articles any new fossil discoveries or controversies about evolution.
Explain with an example for the given, how the following provides evidence in favor of evolution in organisms :
Fossils
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
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
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.
(a) What could the animals X, Y and Z be?
(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?
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
Read the following statement and justify same in your own words with the help of suitable example.
There is evidences of fatal science among chordates.
_______ is a connecting link between Annelida and Arthropoda.
Complete the following chart:
“Appearance of melanised moths post-industrialisation in England is a classic example of evolution by natural selection.” Explain.
Choose the correct option of the following question:
Wings of Insect and Birds are examples of :
Differentiate between connecting links and the missing links.
Long answer question.
Would you consider wings of butterfly and bat as homologous or analogous and why?
Similarities in the initial stages indicate the _______ evidence.
What is carbon dating?
Write the answers to the questions by observing the figure below.
 |
 |
 |
| (a) | (b) | (c) |
- Write the name of the animal ‘(a)’ in the figure.
- Write the name of the animal ‘(b)’ in the figure.
- Write the name of the animal ‘(c)’ in the figure.
- Which evolutionary evidence is illustrated by this figure?
- Write the definition of that evidence for evolution.
Select vestigial organs from the following.
Where is carbon dating used?
Define vestigial organs.
Cucurbits do not develop thick and woody stem as they are:
Tendons and ligaments are examples of ______.
Study of fossils is ______.
Appearance of antibiotic-resistant bacteria is an example of ______.
Explain divergent evolution in detail. What is the driving force behind it?
Write down the difference between homologous and analogous organs.
Industrial melanism was highlighted by ______.
Complete the following conceptual picture:
Give one example of homologous organs found in plants.
