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  • In a pond, last year there were 30 lotus plants. Through reproduction, 25 new lotus plants were added in one year while 8 plants died. The birth and death rates for the lotus population respectivel

In a pond, last year there were 30 lotus plants. Through reproduction, 25 new lotus plants were added in one year while 8 plants died. The birth and death rates for the lotus population respectively are ________ and ________ individuals per lotus every year.

Option: 1

0.83, 0.26


Option: 2

0.26, 0.83


Option: 3

0.25, 0.80


Option: 4

0.80, 0.25


Answers (1)

best_answer

 

 

In a population, these rates refer to per capita births and deaths, respectively. The rates, hence, expressed is a change in numbers (increase or decrease) with respect to members of the population.

- wherein

In a pond, last year there were 30 lotus plants, 25 new lotus plants were added in one year while 8 plants died so:

birth rate = no. of births/total no. of plants = 25/30 = 0.83 offspring per lotus per year.

Death rate = no. of deaths / Total number of plants = 8/30 = 0.26

Posted by

HARSH KANKARIA

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