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What is a tree line?...

What is a tree line?

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Tree line is the edge of the habitat where tree are capable of growing. Due to environmental conditions such as cold temperature, high altitude or lack of moisture the trees are not found beyond this line and if found show stunted growth or form low dense matted bushes.
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NCERT EXEMPLAR-ORGANISMS AND POPULATIONS-Organisms And Populations
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  2. Give the scientific names of any two microorganisms inhabiting the hum...

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  3. What is a tree line?

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  4. Define 'zero population growth rate'. Draw a age pyramid for the same.

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  5. List any four characters that are employed in human population census.

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  6. Give one example for each of the following types (a) Migratory anima...

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  7. Fill in the blanks

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  8. Observe the set of 4 figures A, B, C and D and answer the following q...

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  9. Comment on the following figure: I, II and III, A, B, C, D, G, P, Q, R...

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  10. An individual and a population has certain characteristics. Name these...

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  11. The following diagrams are the age pyramids of different populations. ...

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  12. Comment on the growth curve given below.

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  13. A population of Paramecium caudatum was grown in a culture medium. Af...

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  14. Discuss the various types of positive interactions between species.

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  15. In an aquarium two herbivorous species of fish are living together and...

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  16. While living in and on the host species, the animal parasite has evolv...

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  17. Do you agree that regional and local variations exist within each biom...

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  18. Which element is responsible for causing soil salinity? At what concen...

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  19. Does light factor affect the distribution of organisms? Write a brief ...

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  20. Give one example for each of the following I. Eurythermal plant spe...

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