Home › CBSE Class 12 (Science) › Biology › Organisms and Populations › A population doubles in 3 years while growing ex…
A population doubles in 3 years while growing exponentially. What is r approximately?
A0.123 per year
B0.231 per year
C0.333 per year
D0.693 per year
Answer & Solution
Correct answer: B. 0.231 per year
Doubling gives e^(3r) = 2, so r = ln 2 / 3 = 0.693 / 3, about 0.231 per year.
Related questions
An r-selected species such as aphids is marked by what trait?Which survivorship curve typically characterises r-selected species?In a Type I survivorship curve, when does death mainly occur?Which term describes tightly linked evolution of a flower and its pollinator?What does the orchid Ophrys use to get pollinated by a bee?In fig trees, what does the pollinating wasp receive in return for pollination?What do mycorrhizae supply to the plant?Lichens are an association of a fungus with which partner?