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प्रश्न
Animals that can move from fresh water to sea called as ________.
विकल्प
Stenothermal
Eurythermal
Catadromous
Anadromous
उत्तर
Animals that can move from fresh water to sea called as Catadromous.
संबंधित प्रश्न
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.
Define population
What is reproductive fitness? Explain it with the help of an example.
Answer the following question.
What is "population" according to you as a biology student?
Give an account of population regulation.
Nutrient enrichment of water body result.
Age distribution in a population can influence
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:
Deer
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
What type of population growth is represented by the above age pyramid?
What would be the best method to measure the total population density of a dense bacterial culture in a petridish and why?
Important attributes belonging to a population but not to an individual are:
- Birth rate and death rate
- Male and female
- Birth and death
- Sex-ratio
Select the correct option from the given options:
The number of lily plants in a pond was found to be 50. After one year, the number. increased to 65. Calculate the natality of lily plants.
