BECE - Basic Education Certificate Examination Photosynthesis and Ecosystems Questions and Answers

Question 1

Which of the following correctly lists the raw materials needed for photosynthesis?

Accepted Answer

Carbon dioxide and water

Answer

Oxygen and sunlight

Answer

Glucose and oxygen

Answer

Water and glucose

Question 2

In a food chain, an organism that feeds on plants is known as a

Accepted Answer

Primary consumer

Answer

Producer

Answer

Secondary consumer

Answer

Decomposer

Question 3

A student observes that fallen leaves in a forest eventually disappear. Which group of organisms is primarily responsible for this process?

Accepted Answer

Decomposers

Answer

Producers

Answer

Herbivores

Answer

Carnivores

Question 4

What is the primary source of energy for almost all ecosystems on Earth?

Accepted Answer

The sun

Answer

The moon

Answer

Geothermal heat

Answer

Chemical bonds in rocks

Question 5

A food web is a more realistic representation of an ecosystem than a food chain because it shows that

Accepted Answer

most organisms have multiple food sources.

Answer

energy flows in only one direction.

Answer

all organisms are the same size.

Answer

ecosystems do not contain decomposers.

Question 6

The process by which plants release oxygen into the atmosphere is a direct result of

Accepted Answer

Photosynthesis

Answer

Respiration

Answer

Transpiration

Answer

Decomposition