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प्रश्न
Which one of the following organisms reproduces sexually only once in its lifetime?
विकल्प
Banana
Mango
Tomato
Eucalyptus
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उत्तर
Banana
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संबंधित प्रश्न
Construct an age pyramid which reflects a stable growth status of human population.
Represent diagrammatically three kinds of age-pyramids for human populations.
How does an age pyramid for human population at given point of time helps the policy-makers in planning for future.
List the attributes that populations but not individuals possess.
Mention the different ways by which the population density of different species can be measured.
Animals that can move from fresh water to sea called as ________.
Give an account of population regulation.
Nutrient enrichment of water body result.
The phenomenal and rapid increase of population in a short period is called ______.
Population having large number of postreproductive and small number of prereproductive age group is called
Which of the following would necessarily decrease the density of a population in a given habitat?
The density of a population in a habitat per unit area is measured in different units. Write the unit of measurement against the following:
Bacteria
The density of a population in a habitat per unit area is measured in different units. Write the unit of measurement against the following:
Banyan
The density of a population in a habitat per unit area is measured in different units. Write the unit of measurement against the following:
Fish
Label the three tiers 1, 2, 3 given in the above age pyramid.
What type of population growth is represented by the above age pyramid?
Given below is the Age Pyramid of the population in one of the states in India as per 2011 census. It depicts the male population on the left-hand side, female population on the right-hand side, newborns towards the base and gradually increasing age groups as we move from base to the top, with the oldest population at the top. Study this pyramid and comment upon the appropriateness of the Assertion and the Reason.
Percentage to the total population
Assertion: It is a stable population.
Reason: The pre-reproductive and reproductive individuals are almost in equal numbers and the post-reproductive individuals are relatively fewer.
Write the best method to measure the population density of a single Banyan tree in comparison to Partlzenium weeds in a forest by an ecologist. Explain and justify your answer.
