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 per year.

Question

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 per year. (A) 0.83, 0.26 (B) 0.26, 0.83 (C) 0.25, 0.80 (D) 0.80, 0.25

Tardigrade Admin · Accepted Answer

Total number of plants (in the beginning)

= 30

New plants added by reproduction

= 25

Birth rate (of a population)

= \frac{New plants}{Total number of plants} = \frac{25}{30}

= 0.83

individuals per lotus per year
Number of plants died

= 8

Death rate (of a population)

= \frac{Number of deaths}{Total number of plants}

= \frac{8}{30} = 0.26

individuals per lotus per year.

Q. 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 per year.

$0.83$ , $0.26$

$0.26$ , $0.83$

$0.25$ , $0.80$

$0.80$ , $0.25$

Q. 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 per year.

0.83, 0.26

0.26, 0.83

0.25, 0.80

0.80, 0.25

Q. 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 per year.

$0.83$ , $0.26$

$0.26$ , $0.83$

$0.25$ , $0.80$

$0.80$ , $0.25$