Question

If in a pond there were 2000 lotus plants last year
and through reproduction 800 new plants are
added, taking the current population to 2800, the
birth rate of offsprings per lotus per year will be
(1) 40
(2) 0.4
(3) 0.8
(4) 1.6​

Answer 1

Explanation:

40 is the answer of ur ques

Answer 2

Birth rate will be- (2) 0.4

Birth rate also known as natality is defined as "the ratio of births to the size of population".

It is calculated by the formula - increase in population/original population

In the question original population given is 2000 lotus. Increase in population given in question is 800, as this number of births take place.

Keeping the values in formula-

Birth rate = 800/2000

Birth rate = 0.4