Review the key concepts, formulae, and examples before starting your quiz.
🔑Concepts
Plants are made of several parts with specific roles: Roots anchor the plant and absorb and minerals; the Stem provides support and transports nutrients; Leaves are the primary site for food production.
Photosynthesis is the process by which green plants use sunlight to synthesize food from and .
Chlorophyll is a green pigment found in the chloroplasts of leaves that captures energy from sunlight.
During photosynthesis, plants release (Oxygen) as a byproduct, which is essential for the survival of most living organisms.
Plants are known as 'Producers' in an ecosystem because they create their own energy rather than consuming other organisms.
📐Formulae
💡Examples
Problem 1:
Identify the gas that plants take in from the atmosphere and the gas they release during the process of making food.
Solution:
Plants take in and release .
Explanation:
Through small pores in the leaves called stomata, plants absorb Carbon Dioxide () for photosynthesis and exhale Oxygen () as a waste product.
Problem 2:
Which part of the plant is responsible for absorbing from the soil, and how does it reach the leaves?
Solution:
The Roots absorb , and the Stem transports it to the leaves.
Explanation:
Roots use osmosis to pull from the earth. The stem contains tube-like structures (xylem) that act like straws to carry the water up to the leaves for use in photosynthesis.