LIVING THINGS AND THEIR ENVIRONMENT

BIODIVERSITY

LIVING THINGS AND THEIR ENVIRONMENT

LEARNING OBJECTIVES

1. distinguish between producers and consumers

2. analyze the transfer of energy from one organism to another

3. construct a food chain in a given ecosystem

Open Ended

Enumerate the Taxonomic Classification System.

Taxonomic Classification System

Domain

Kingdom

Phylum

Class

Order

Family

Genus

Species

Multiple Choice

Feeding relationship that exists among organisms.

• Food chain

• Food Web

• Energy pyramid

Multiple Choice

Refers to each step in the transfer of energy and matter in a community.

• Ecosystem

• Energy pyramid

• Trophic level

Multiple Choice

Organisms that can make their own food in the ecosystem.

• Herbivores

• Carnivores

• Producers

Multiple Choice

Animals that feeds on flesh.

• Herbivores

• Carnivores

• Decomposers

Multiple Choice

Organisms that feed on and break down organic matter.

• Decomposers

• Producers

• Consumer

High and Low Biodiversity

When an ecosystem has a high number of species present it means that it has a high biodiversity.The high number of species ensures the stability of an ecosystem because it has a better chance of coping with environmental stressors such as floods,droughts,and diseases.The variety of species means that when there is a decrease in the population of one species,other species can compensate for their loss,thus minimizing the effects on the environment.

What type of ecosystem is in the picture?

What type of ecosystem is in the picture?

Open Ended

Why is high biodiversity advantageous over low biodiversity?

FOOD CHAIN

A food chain shows the sequence of how energy is transferred from one organism to another. Organisms in a food chain observe a feeding position called trophic level. Trophic level is a step in nutritive series of an ecosystem. The organisms at each level are classified into based on their feeding behavior. The amount of energy at each trophic level decreases as it moves through an ecosystem.

Producers are autotrophs, or organisms that produce their own food. 

The primary consumers are herbivores (vegetarians). The organisms that eat the primary consumers are meat eaters (carnivores) and are called the secondary consumers. The secondary consumers tend to be larger and fewer in number. This continues on, all the way up to the top of the food chain.

FOOD WEB

Food chains may be interconnected to form a food web. For example, one kind of food may be eaten by several consumers. or several foods may be eaten by one consumer.