Review the key concepts, formulae, and examples before starting your quiz.
🔑Concepts
A Habitat is a specific place where a plant or animal lives that provides the four essentials for survival: food, water (), shelter, and space.
Photosynthesis is the process by which green plants use sunlight to convert carbon dioxide () and water () into food (glucose) and oxygen ().
Producers are living things, such as plants and algae, that make their own food using energy from the Sun.
Consumers are living things that cannot make their own food and must eat plants or other animals. These include herbivores, carnivores, and omnivores.
Decomposers (like fungi and bacteria) break down dead organic matter, returning nutrients back into the soil ecosystem.
A Food Chain shows the flow of energy from one organism to another, always starting with a producer: .
Adaptations are special features or behaviors (like a polar bear's thick fur or a cactus's ability to store ) that help organisms survive in their specific habitats.
📐Formulae
💡Examples
Problem 1:
In a desert habitat, identify the roles of the following organisms: Cactus, Grasshopper, and Lizard.
Solution:
Cactus = Producer; Grasshopper = Primary Consumer (Herbivore); Lizard = Secondary Consumer (Carnivore).
Explanation:
The Cactus uses photosynthesis to create energy. The Grasshopper eats the Cactus, and the Lizard eats the Grasshopper to obtain energy.
Problem 2:
What gas do plants release into the atmosphere during photosynthesis that animals need to breathe?
Solution:
Oxygen ().
Explanation:
As a byproduct of the chemical reaction involving and powered by light, plants release into the air.
Problem 3:
Explain why a food chain usually starts with the Sun.
Solution:
Explanation:
The Sun provides the initial light energy required for producers (plants) to create food. Without the Sun, producers could not grow, and the rest of the food chain would have no energy source.