F5 Chapter 9 Ecosystem

Which of the following is a biotic component of an ecosystem?

• fungi

• light

• temperature

• air

What is the main function of the pneumatophores which are found in mangrove trees?

• Store water

• Support the trees in soft soil

• Enable the roots to undergo gaseous exchange

• Eliminate excess salts

Which of the following is the importance of the mangrove ecosystem?

I. Protection zone

II. Fishery resource

III. Forestry resource

IV. Animal hunting

• I, II and III

• II, III and IV

• I and II

• I and III

The following information shows the interaction that occurs in the alimentary canal of termites.

What is the type of interaction that occurs between Trichonympha sp. and the termites?

• Saprophytism

• Commensalism

• Mutualism

• Parasitism

Diagram shows an interaction between two organisms. What type of interaction is this?

• Parasitism

• Mutualism

• Commensalism

• Saprophytism

The diagram shows a food web.

Which organisms are in the fourth trophic level?

• Bird, Frog

• Caterpillar, Grasshopper

• Plant

• Eagle

There are three patterns of population distribution as shown in the Figure. Which of the following matches the pattern X, Y and Z correctly?

• X: Random

  Y: Clumped

  Z: Uniform

• X: Clumped

  Y: Uniform

  Z: Random

• X: Uniform

  Y: Random

  Z: Clumped

• X: Clumped

  Y: Random

  Z: Uniform

Diagram shows organisms P, Q and R.

Classify the organisms according to the types of nutrition.

• P: Chemoautotroph Q: Holozoic R: Parasitism

• P: Chemoautotroph Q: Saprophytism R: Parasitism

• P: Photoautotroph Q: Parasitism R: Saprophytism

• P: Photoautotroph Q: Saprophytism R: Holozoic

Mangrove plants act as a natural barrier towards the energy waves.

Which characteristics of the mangrove plants can help to reduce the damage of the coastal area?

• I and II

• II and IV

• I and III

Diagram shows three different zones at a mangrove swamp.

Which types of roots are correctly matched to the dominant mangrove plants in the zones R, S and T?

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