Biology: Concepts and Investigations
Biology: Concepts and Investigations
5th Edition
ISBN: 9781260259049
Author: Hoefnagels
Publisher: MCG
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Chapter 31.5, Problem 2MC
Summary Introduction

To compare and analyze:

The amount of time that the spiracles were open in pupae at the given O2 concentration.

Concept introduction:

Spiracles are respiratory organs which help in the exchange of the gases in the oxygen and carbon-dioxide. It occurs in the pupa of Atlas moth (Attacus atlas). The concentration of the gases in the tracheae of the insects was studied by three scientists namely Hetz, Bradley and Stefan K.

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