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State significance of pollination.
Concept: Sexual Reproduction in Plants
Write one main difference between asexual and sexual mode of reproduction. Which species is likely to have comparatively better chances of survival – the one reproducing asexually or the one reproducing sexually? Give reason to justify your answer.
Concept: Sexual Reproduction in Plants
Define the power of a lens.
Concept: Power of a Lens
Why is the ‘tertiary sector’ becoming important in India? Explain any three reasons.
Concept: Primary, Secondary and Tertiary Sectors in India
"The economic strength of a country is measured by the development of manufacturing industries." Explain with examples.
Concept: Meaning and Importance of Manufacturing
Which one of the following countries has 'one party system'?
Concept: Number of Political Parties
On the given outline Political Map of India, identify the place marked as 'A' with the help of following information and write its correct name on the line marked near it:
The place where National Congress Session was held in September, 1920.
Concept: National Parties
Why is the ‘tertiary sector’ becoming important in India? Explain any three reasons.
Concept: Primary, Secondary and Tertiary Sectors in India
"Pressure groups and movements exert influence on politics in different ways." Support the statement with suitable examples.
Concept: Concept of Popular Struggles and Movements
If the sum of first 7 terms of an A.P. is 49 and that of its first 17 terms is 289, find the sum of first n terms of the A.P.
Concept: Sum of First ‘n’ Terms of an Arithmetic Progressions
If 4 times the 4th term of an A.P. is equal to 18 times its 18th term, then find its 22nd term.
Concept: Sum of First ‘n’ Terms of an Arithmetic Progressions
Give one example of a unisexual flower.
Concept: Sexual Reproduction in Plants
Mention the changes a flower undergoes after fertilisation.
Concept: Sexual Reproduction in Plants
How do Mendel's experiment show that traits are inherited independently?
Concept: Heredity
Mention the types of mirrors used as (i) rear view mirrors, (ii) shaving mirrors. List two reasons to justify your answers in each case.
Concept: Spherical Mirrors
Define the term dispersion of white light.
Concept: Dispersion of Light Through a Prism
State the rule to determine the direction of a magnetic field produced around a straight conductor-carrying current.
Concept: Right-hand Thumb Rule
Explain with examples any five factors that are responsible for the industrial location.
Concept: Age of Industrialization >> Industrialization in the Colonies
'Workers of Assam had their own understanding of Mahatma Gandhi and the notion of Swaraj.' Explain with examples.
Concept: Swaraj in the Plantations
“Consequences of environmental degradation do not respect national or state boundaries.” Justify the statement.
Concept: Industrial Pollution and Environmental Degradation
