Biology Science Notebook
Biology Science Notebook
1st Edition
ISBN: 9780078961014
Author: GLENCOE
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Concept explainers

Animal Diversity
Nematodes are commonly known as roundworms. They are free-living, very tiny organisms. They have an elongated and tubular body. These organisms have a nervous system and are mostly act as parasites to both animals and plants.
Platyhelminthes
Platyhelminthes are also known as "flatworms" because as they are dorsoventrally flattened from head to tail. They are invertebrate, soft-bodied, acoelomate, unsegmented and have bilateral symmetry.
Question
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Chapter 25.4, Problem 1RV
Summary Introduction

To define:

The term ‘protostome’. 

Expert Solution & Answer
Check Mark

Explanation of Solution

Protostomes are the animals in which the mouth is formed first. In the process of their embryonic developments, a blastopore gives rise to a structure that helps in feeding and later forms the mouth of the animal.

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Chapter 25.3, Problem 7MI
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Chapter 25.4, Problem 1NV

Chapter 25 Solutions

Biology Science Notebook

Ch. 25.1 - Prob. 1RVCh. 25.1 - Prob. 1NVCh. 25.1 - Prob. 2MICh. 25.1 - Prob. 3MICh. 25.1 - Prob. 4MICh. 25.2 - Prob. 1RVCh. 25.2 - Prob. 1NVCh. 25.2 - Prob. 2MICh. 25.2 - Prob. 3MICh. 25.2 - Prob. 4MI
Ch. 25.2 - Prob. 5MICh. 25.2 - Prob. 6MICh. 25.3 - Prob. 1RVCh. 25.3 - Prob. 1NVCh. 25.3 - Prob. 2MICh. 25.3 - Prob. 3MICh. 25.3 - Prob. 5MICh. 25.3 - Prob. 6MICh. 25.3 - Prob. 7MICh. 25.4 - Prob. 1RVCh. 25.4 - Prob. 1NVCh. 25.4 - Prob. 1AVCh. 25.4 - Prob. 2MICh. 25.4 - Prob. 3MICh. 25.4 - Prob. 4MICh. 25.4 - Prob. 5MICh. 25.4 - Prob. 6MI

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