Trees absorb water and nutrients from the soil through their roots. These nutrients are essential for growth and development.
Contents
MCQs
1. What part of the tree makes food using sunlight?
A) The trunk
B) The roots
C) The leaves
D) The branches
Answer: C) The leaves
Explanation: Leaves contain chlorophyll, which helps the tree convert sunlight into food through a process called photosynthesis.
2. How do trees grow taller?
A) By adding layers to their roots
B) By shedding leaves
C) By adding layers to their trunks
D) By spreading their branches wider
Answer: C) By adding layers to their trunks
Explanation: Trees grow taller by producing new cells in a region called the apical meristem, located at the tips of branches, and by adding layers of cells around their trunks, known as secondary growth.
3. What is the process called that trees use to make food from sunlight?
A) Respiration
B) Photosynthesis
C) Transpiration
D) Condensation
Answer: B) Photosynthesis
Explanation: Photosynthesis is the process by which trees (and other plants) use sunlight to convert carbon dioxide from the air and water from the soil into glucose, a type of sugar that serves as food for the tree.
4. How do trees reproduce?
A) By laying eggs
B) By producing seeds
C) By releasing spores
D) By splitting in two
Answer: B) By producing seeds
Explanation: Most trees reproduce by producing seeds. These seeds can be found within fruits or cones, depending on the type of tree. The seeds then grow into new trees.
5. What helps trees absorb water from the soil?
A) Leaves
B) Flowers
C) Roots
D) Bark
Answer: C) Roots
Explanation: The roots of a tree spread out in the soil and absorb water and nutrients. Some roots have tiny hairs that increase the surface area for absorption.
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