SCIENCE FORM 2 CHAPTER 2 ECOSYSTEM

Multiple Choice

Which of the following best describes the role of decomposers in an ecosystem?

• They produce food using sunlight.

• They eat both plants and animals.

• They break down dead organisms into simpler substances.

• They provide shelter for other organisms.

Multiple Choice

Which of the following best describes the role of a primary consumer in an ecosystem?

• They produce their own food through photosynthesis.

• They eat both plants and animals.

• They decompose dead organisms.

• They are always carnivores.

Multiple Select

Which organisms in the food chain are considered secondary consumers?

• Plants

• Rabbits

• Foxes

• Owls

Fill in the Blanks

In the food chain shown, the snake is a

consumer.

Multiple Select

Which of the following organisms can be found at more than one trophic level in the food web?

• Grasshopper

• Rabbit

• Hawk

• Grass

Multiple Choice

Which organism in the food web acts as a primary producer?

• Paddy plant

• Grasshopper

• Rat

• Snake

Fill in the Blanks

A nutrient cycle is a repeated pathway of a particular nutrient or element from the environment through one or more organisms and back to the

.

Multiple Select

Which of the following are processes involved in the water cycle?

• Evaporation

• Condensation

• Precipitation

• Photosynthesis

Multiple Choice

During the carbon and oxygen cycle, which process releases oxygen into the atmosphere?

• Photosynthesis

• Respiration

• Evaporation

• Condensation

Multiple Choice

Which process in the carbon cycle is responsible for converting carbon dioxide into oxygen?

• Photosynthesis

• Respiration

• Decomposition

• Combustion

Multiple Choice

Which of the following terms refers to a group of organisms with the same shape, structure, and ability to breed together?

• Species

• Population

• Community

• Ecosystem

Fill in the Blanks

A group of frogs living together in the same pond is an example of a

.

Multiple Select

Select all the components that make up a community in an ecosystem as shown in the image.

• Fishes

• Water plants

• Frogs

• Snails

Multiple Choice

Which of the following is NOT a basic need provided by a habitat as shown in the figure?

• Air

• Food

• Space

• Light

Multiple Choice

Which of the following is an example of a decomposer in an ecosystem?

• Bacteria

• Rabbit

• Sun

• Fish

Multiple Choice

1. Definition: green plant that can make their own food / definisi: tumbuhan hijau yang dapat membuat makanannya sendiri

• Consumer / pengguna

• Decomposer/ pengurai

• Producer / pengeluar

Multiple Choice

2 way relationship between organisms where both species are benefiting...

• symbiosis
• succession
• niche
• predator

Multiple Choice

How are people trying to restore Earth's natural resources?

• covering landfills with soil and planting grasses
• planting trees
• creating parks for wildlife
• all of the above

Multiple Choice

An arrangement of interrelated food chains illustrating the flow of energy between interdependent organisms.

• predator

• food web

• ecosystem

• food chain

Multiple Choice

Explain the flow of energy in this food chain (who passes energy to who).

• The hawk gives energy to the snake. The snake gives energy to the mouse. The mouse gives energy to the grasshopper who gives energy to the grass.

• The mouse gives energy to the hawk. The snake gives energy to the grasshopper. The grass gives energy to the snake.

• The grass gives energy to the grasshopper. The grasshopper gives energy to the mouse. The mouse gives energy to the snake who gives energy to the hawk.

Multiple Choice

Determine the number of food chain in the food web shown.

• 3

• 4

• 5

• 6

Multiple Choice

Arrange the proper food chain of these animals:

Rat, Owl, Paddy tree, Snake

• Rat → Owl → Paddy plant → Snake

• Paddy plant → Owl → Rat → Snake

• Paddy plant → Rat → Snake → Owl

• Owl → Rat → Snake → Paddy Plant

Multiple Choice

Paddy plant → rat → sparrow → eagle

Which is the secondary consumer?

• paddy plant

• rat

• sparrow

• eagle

Multiple Choice

When there are several _____ within an ecosystem, it will form a _____.

• food chains, food chain

• food chains, food web

• food webs, food chain

• food webs, food chain

Multiple Choice

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

Multiple Choice

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

Multiple Choice

Which of the following is NOT an example of a biological control agent?

• Owls

• Rats

• Ladybird beetle

• Bacillus thuringiensis