Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Chapter 56, Problem 7TY
Summary Introduction
Introduction: The change in
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Given that fertility rate is defined as each woman producing exactly enough offspring to replace herself and her offspring’s father, if the fertility rate is sustained for a generation, then which of the following is true?
Select one:
a. r > 1
b. 0 < r < 1
c. r = 0 and there is zero population growth
d. r = 1
45. Calculate the approximate doubling time for a population growing at 1.0% per year.
A. about 70 years
B. about 35 years
C. about 14 years
D. about 5 years
E. about 1 year
Calculate the generation time given the following population data:
Ro = 0.601,
r = -0.05,
[xlxmx = 6.4,
mx = 0.96
A. -128
B. 0.15
C. 1.60
D. 6.67
E. 10.6
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- 3. Calculate the approximate doubling time for a population growing at 7.0% per year. A. about 1 year B. about 5 years C. about 7 years D. about 10 years E. about 60 yearsarrow_forwardA population has 1000 juvenile individuals, 100 young adult individuals, and 10 older adult individuals. This population is likely…? Group of answer choices a, increasing b. decreasing c. stable d. no way to tellarrow_forwardIn a certain population of rabbits, 25 new rabbits are born and five move into the population from surrounding areas during a single year. However, 10 rabbits die, and five leave the population during the same time frame. What is the population change for that year? a. 30 b. No change c. 15 d. 25 e. 10arrow_forward
- What is the "2" stand for in the following equation? Nt= No x 2n a.The rate of growth- the population doubles with each generation b.How many individual cells there after a given time c.The dilution factor of each individual serial dilution d.How many generations there arearrow_forwardSuppose 200 fish are marked and released in a pond. The following week, 200 fish are caught and 100 of them have marks. There are about ______ fish in this pond. a. 200 b. 300 c. 400 d. 2,000arrow_forwardAccording to Thomas Malthus, at what rate is the population increasing? a naturally b linearly c slowly d exponentiallyarrow_forward
- A population grows in discrete time according to the logistic growth equation. At time t, the population is 50 individuals. If K is 100 and r is 1.5, what is the population size at t+1 (the next timestep)? (please round to the nearest whole number) О а. 96 O b. 50 О. 81 O d. 100 е. 88 f. 120arrow_forwardThe growth of a population of rare South American beetles is given by the logistic function with k = 0.00001 and t in months. Assume that there are 200 beetles initially and that the maximum population size is 10,000. a. Find the growth function G1t2 for these beetles. Find the population and rate of growth of the population after the following times. b. 6 months c. 3 years d. 7 years e. What happens to the rate of growth over time?arrow_forwardPopulations are evolving if A. the Hardy-Weinberg equation equals 1. B. the Hardy-Weinberg equation equals 0. C. p + q changes between generations. D. p + q remains the same between generations.arrow_forward
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