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1. Introduction to Biology eLearn.Punjab

Frog Analyzing and Interpreting:

Frog (scientific name: Rana tigrina) shows the multicellular Describe the main organs of the

organization. The body is made of organ systems and each mustard by observing a specimen.

organ system consists of related organs. All the organs are

made of specific tissues (epithelial, glandular, muscular,

nervous etc). Some organs and organ systems of frog have

been described in the practical activity given next.

Figure 1.7: Frog Figure 1.6: Mustard

Analyzing and Interpreting

Identify different tissues in the photomicrographs of different organs.

Practical Work:

Identification of organs and organ systems in a dissected frog
The multicellular organization can be studied in a dissected frog. Different organs and organ systems
can be identified and compared with the diagrams or figures given in books or charts.
Problem:
Identify the organs that make up the internal systems of the frog.
Purpose:
In laboratory, the teacher will dissect a frog in order to expose its external and internal structures.
Background information:
Frog belongs to the class amphibia of the animal kingdom. It possesses multicellular organization
consisting of tissues, organs and organ systems.

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