Chapter 4, Problem 7A

Summary Introduction

Introduction :

The angelfish reach sexual maturity between the six to twelve months. They spawn 100 to 1000 eggs in single laying every seven days. The concept of r-strategy and k strategy is linked to the population. These conditions are select to reach a high intrinsic growth rate.

Answer to Problem 7A

Correct answer :

The correct answer is option (B) Angelfish have an r- strategy reproductive pattern.

Explanation of Solution

Explanation for the correct answer :

Option (B) Angelfish has an r- strategy reproductive pattern. The reproductive pattern of r strategy is reproduced many offspring in a life cycle of time. Angelfish can live in variable environmental conditions. So, the correct answer is option (B).

Explanation for incorrect answer :

Option (A) Angelfish has a k-strategy reproduction pattern. k − Strategy species are live in constant and predictable environment conditions, but Angelfish are live in unpredictable environment. So, option (A) is incorrect.

Option (C) Angelfish probably has to low mortality rate. r − Strategy species have a short life span and high mortality rate. So, option (C) is incorrect.

Option (D) Angelfish provide a lot of care for their young. Angelfish has rapid development and many small offspring. They do not provide good parental care of their offspring. So, option (D) is incorrect.