Science Form 2 Chapter 2 (Ecosystem)

What's the source of energy originates from in all ecosystems?

• Producer

• Sun

• Consumer

• Decomposers

The following is a food chain
Grass > Grasshopper > Bird > Snake
Which of these statements is true?

• If the amount of grasshopper increases, the amount of grass will increase

• Bird is the tertiary consumer

• If the amount of bird decreases, the amount of grasshoppers will increase

• If the amount of grass decreases, ONLY grasshoppers will decrease

The following is a food chain
Cabbage > Snail > X > Snake

What's the characteristics of animal X?

• Animal X is an omnivore

• Animal X eats producers

• Animal X breaks down dead animals and plants into simpler materials or nutrients

• Animal X can make its own food

What are the steps to solve interference to the nutrient cycle?

• Overconsumption of water resources

• Burn fossils

• Replant trees

• Tighten laws

Which of the following is NOT true about the independence and interaction among organisms and between organism and the environment

• Habitat > Species > Population > Community > Ecosystem

• Species is a group organisms that have common characteristics and can reproduce to breed offsprings

• Ecosystem is a few communities that live together in one habitat and have mutual interaction with one another

• Habitat is a group of organisms of the same species that live in the same habitat

Which of the following is a non-living components in the environment in an ecosystem?

• Pests

• Water

• Air

• Humans

Types of interaction between organisms can be divided into _.

• 1

• 2

• 3

• 4

"Mynah gets food by eating lice, while the body of the buffalo is free of lice"
The statement above is an example of what interaction between organisms

• Symbiosis

• Competition

• Prey-Predator

• Fighting

Which of the following is an example of parasitism?

• Remora fish and shark

• Tapeworm and the human intestines

• Lactobacillus casei strain Shirota and the human intestines

• Sea anemone and clown fish

Prey-Predator is an interaction that involves one organism that ______ another organism

• Eats

• Protects

• Does nothing

• Harms