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प्रश्न
_____________ is a vestigial organ in human beings.
विकल्प
Wisdom teeth
Ear muscles
Body hairs
All the above
उत्तर
All the above
APPEARS IN
संबंधित प्रश्न
Mammals : _________ : : Amphibia : Fishes
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
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
The organs P and Q of two animals have different structures but similar functions. On the other hand, the two organs R and S of two other animals have the same basic structure but different functions.
(a) What are the organs like P and Q known as?
(b) Name the organs like P and Q. Also name the animals which have such organs.
(c) What are the organs like R and S called?
(d) Name the organs like R and S. Also name the animals which have such organs.
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.
Vestigial organ ______ present in human body is proof of evolution.
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
Draw a labelled diagram of T.S. of a leaf showing Kranz anatomy.
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.
I am a connecting link between reptiles and mammals. Who am I?
Give scientific reason.
Duck-billed platypus shows relationship with mammals.
Complete the flowchart.
Enlist the evidences of evolution.
What is carbon dating?
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?
Where is carbon dating used?
Why do all the gametes formed in human females have an X chromosome?
Evolution has exhibited a greater stability of molecular structure when compared with morphological structures. Comment on the statement and justify your opinion.
Cucurbits do not develop thick and woody stem as they are:
Flippers of Penguins and Dolphins are examples of:
Organs having similar functions but different origin and development are known as:
Animal husbandry and plant breeding programmes are the examples of ______.
Analogous organs arise due to ______.
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?
How do we compute the age of a rock?
Give a scientific reason.
Morphological evidences suggest that dog, sheep and wolf have a common origin.
Find the odd one out:
Write avian characters of Archaeopteryx.
Define the term:
Homologous organs
Industrial melanism was highlighted by ______.
Industrial melanism in England after 1850 is an excellent example of Natural selection. Explain how?
