Science Form 2 Chapter 2

Which consumers that eat animals like caterpillar & rats?

• Consumers

• Primary consumers

• Secondary consumers

• Tertiary consumers

What is the meaning of food web?

• The natural interconnection of food chains and a graphical representation in an ecological community.

• Feeding relationship and transfer of energy from the producers to the consumers

• Transferred from one organism to another

• Break down dead animals and plants into nutrients in the soil

Which of the picture is showing the phosphorus cycle?

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How to solve problems associated of human activities by deforestation

• use alternative energy such as solar energy

• take legal actions against those who pollute water

• replant new trees

• use modern, intensive farming and agriculture systems

What is the difference between community & ecosystem?

• Different habitat

• Community live in a defined area while ecosystem live together with different species

• Both have different relationship

• Raise by farmers

What is the meaning of neutralism?

• Relationship between organisms of different species in which one organism is inhibited or destroyed while the other organism remains unaffected.

• Two species interact with each other beneficially; they have no need to interact with each other

• The relationship between two species which interact but do not affect each other.

• Biological interaction where one organism, the predator, kills and eats another organism, its prey.

Which of the picture is the same interaction?

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There are few advantages of biological control. One of the advantage is..?

• Cause imbalance to the environment

• Effect is faster

• Pollutes the environment

• Less using money to buy pests

There are few factors which affect the population size. What is the example of factors which is predation?

• Certain species migration to other places like birds during winter

• The spread of bird flu disease in chicken fams

• The increase in population size of crown-of-thorns starfish which feeds on coral reduces the number of coral species

• The excess of food causes the population of crows to increase

How the environment can play a role to maintaining a balanced nature?

• Build marine parks to preserve coral reefs

• Maintain forest reserves

• Make lots of buildings

• Practice 5R concepts