Chapter 4, Problem 4STP

Summary Introduction

Introduction:

Biologists carry out various scientific studies on life and living organisms. Biologists focus on how an organism exist, how it is built, its function and growth. The biologist studies organisms and their relationship with the environment.

Answer to Problem 4STP

Correct answer :

The correct answer is option (A) Beauty.

Explanation of Solution

Explanation/justification for the correct answer :

Option (A) - Beauty. Beauty is expressed through visual stimuli. Beauty can be expressed by using various parameters which may differ from one person to another. So, the correct answer is option (A).

Explanation for incorrect answer :

Option (B) - Chemical processes. In living organisms, a number of chemical processes are carried out. These processes are necessary and carried but from the cellular levels. Living organisms produce a number of chemicals which are studied by biologist.So, this is an incorrect answer.

Option (C) - Growth rate. A plant has a life cycle as it complete various stages of life. It develops from a seed and grows into a plant. The biologist study the growth rate of the plants using scientific observation and various results are utilized for different uses. So, this is an incorrect answer.

Option (D) - Reproduction. Reproduction is one of the main characteristics of living organisms studied by biologist. Biologists study different features of reproduction of plants and its effect on the ecosystem. So, this is an incorrect answer.