Basis Of Classification
Chapter Name : Animal Kingdom |
Sub Topic Code : 103_11_04_01_01 |
Topic Name : Basis Of Classification |
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Sub Topic Name : Levels Of Organization |
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Introduction
Level of organization tells us the arrangement of cells in an organism.
Pre-Requisites:
Basis of classification of plants.
Activity:
Observe a flatworm. Spot the presence or absence of blood vessels.
Real Life Question:
We know that we have different organ systems for various functions, like the digestive system for digestion, respiratory system for respiration etc, but do all animals have such organ systems?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Open Circulatory System Closed Circulatory System Incomplete Digestive System Complete Digestive System | blood is pumped out of the heart and the cells and tissues are directly bathed in it blood is circulated through a series of vessels of varying diameters (arteries, veins and capillaries) has only a single opening to the outside of the body that serves as both mouth and anus has two openings, mouth and anus |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| Observe a cockroach under the Microscope in the lab. | Look for the two openings of the digestive system. |
Places to visit :
Biology Laboratory
Practical examples around us
| Examples | Explainations |
|---|---|
| Cockroach has a complete digestive system and an open circulatory system. |
What you learn in Theory:
The basis on which animals are divided into various phyla.
What you learn in Practice:
Not all organisms have an organ system similar to that of humans.