Class 10 Science - Chapter Heredity and Evolution NCERT Solutions | Give an example of characteristics being
Give an example of characteristics being used to determine how close two species are in evolutionary terms.
The more characteristics of two species have in common, they seem to be more closely related. And the more closely they are related, more recently they shared a common ancestor or the evolutionary relationship.
Mostly the homologous characteristics derive from how close two species are in evolutionary terms. For example, mammals have four limbs as birds, reptiles and amphibians possess. Basic structures of the limbs are very similar and they are modified to do different functions. The characteristics can be similar in different organisms because of sharing the common ancestors which helps to identify the evolutionary relationship among two close related species. Another example is the common connection link between the reptiles and birds. The connecting link between the reptiles and the birds are known as archaeopteryx. Aves have the evolutionary characters which are derived from the reptiles, in which the forelimbs of the reptiles modified into the feathers or the wings.
More Questions From Class 10 Science - Chapter Heredity and Evolution
- Q:-
Outline a project which aims to find the dominant coat colour in dogs.
- Q:-
How is the sex of the child determined in human beings?
- Q:-
A man with blood group A marries a woman with blood group O and their daughter has blood group O. Is this information enough to tell you which of the traits – blood group A or O – is dominant? Why or why not?
- Q:-
How do Mendel’s experiments show that traits are inherited independently?
- Q:-
If a trait A exists in 10% of a population of an asexually reproducing species and a trait B exists in 60% of the same population, which trait is likely to have arisen earlier?
- Q:-
Explain how sexual reproduction gives rise to more viable variations than asexual reproduction. How does this affect the evolution of those organisms that reproduce sexually?
- Q:-
Explain the terms analogous and homologous organs with examples.
- Q:-
How do Mendel’s experiments show that traits may be dominant or recessive?
- Q:-
Will geographical isolation be a major factor in the speciation of an organism that reproduces asexually? Why or why not?
- Q:-
How does the creation of variations in a species promote survival?
Popular Questions of Class 10 Science
- Q:-
Did Döbereiner’s triads also exist in the columns of Newlands’ Octaves? Compare and find out.
- Q:-
What is a good source of energy?
- Q:-
Why is diffusion insufficient to meet the oxygen requirements of multi-cellular organisms like humans?
- Q:-
What are trophic levels? Give an example of a food chain and state the different trophic levels in it.
- Q:-
What changes can you make in your habits to become more environment-friendly?
- Q:-
What is the difference between a reflex action and walking?
- Q:-
What is the importance of DNA copying in reproduction?
- Q:-
Why should a magnesium ribbon be cleared before burning in air?
- Q:-
Define the principal focus of a concave mirror.
- Q:-
You have been provided with three test tubes. One of them contains distilled water and the other two contain an acidic solution and a basic solution, respectively. If you are given only red litmus paper, how will you identify the contents of each test tube?
Recently Viewed Questions of Class 10 Science
- Q:-
Write the balanced chemical equations for the following reactions.
(a) Calcium hydroxide + Carbon dioxide → Calcium carbonate + Water
(b) Zinc + Silver nitrate → Zinc nitrate + Silver
(c) Aluminium + Copper chloride → Aluminium chloride + Copper
(d) Barium chloride + Potassium sulphate → Barium sulphate + Potassium chloride - Q:-
What can you as an individual do to reduce your consumption of the various natural resources?
- Q:-
How do auxins promote the growth of a tendril around a support?
- Q:-
What are the two properties of carbon which lead to the huge number of carbon compounds we see around us?
- Q:-
List two methods of producing magnetic fields.
- Q:-
Consider a circular loop of wire lying in the plane of the table. Let the current pass through the loop clockwise. Apply the right-hand rule to find out the direction of the magnetic field inside and outside the loop.
- Q:-
Explain the nature of the covalent bond using the bond formation in CH3Cl.
- Q:-
What is a good fuel?
- Q:-
The human eye forms the image of an object at its
(a) cornea. (b) iris. (c) pupil. (d) retina.
- Q:-
Samples of four metals A, B, C and D were taken and added to the following solution one by one. The results obtained have been tabulated as follows.
Metal Iron(II) sulphate Cooper(II) sulphate Zinc sulphate Silver nitrate A No reaction Displacement B Displacement No reaction Displacement C No reaction No reaction No reaction No reaction
- All Chapters Of Class 10 Science
- All Subjects Of Class 10