Study of plant population density by quadrat method
 1) What is plant population density? The degree of uniformity of the occurrence of individuals of a species within a plant community. The number of individuals of the species in any unit area at a given time. A sample plot of a specific size used for the study of population. Total number of species in a sampling quadrat.

 2) Which is correct to calculate plant population density? Density=(Total no.of individuals of the species in all the sampling unit )/(Total number of sampling units studied ) Density=(Total number of sampling units employed for the study)/(Number of sampling units in which the species occurs)*100 Density=(Total number of sampling units employed for the study)/(Total no.of individuals of the species in all the sampling unit) Density=(Total no.of individuals of the species in all the sampling unit)/(Total number of sampling units employed for the study)*100

 3) An ecologist divided a plot into 8 quadrats and studied the density of a particular species. He found that the total number of species occurring in all the sampling units was 58. According to his measurements, what was the density of the specific species? 8 8.25 7.25 6.4

 4) Why is the quadrat method used for calculating plant population density for extensive habitats? Quadrat method has no rules for counting plants. It is possible to count all the individuals in a population using quadrat method. Low cost. Counting all individuals in a population is not possible for extensive habitats.

 5) What is the definition for population? A population is a group of individuals of the same species which inhabits a particular space at a particular time. A population is a group of individuals of different species which inhabit a particular space at a particular time. A population is a group of all the species present in a community. A population is a group of individuals having different characteristics.

 6) Which among the following statements is not true as related to population? A community consists of many populations of different species living in the same location at the same time. The number of individuals in a population remains constant. Number of individuals may increase or decrease due to many factors like birth rate, death rate and migration. The number of individuals in a population never remains constant.

 7) The quadrat method is used to sample __________. Mobile organisms. Sessile organisms. Birds. Fish.

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