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.
You may like these:
Quick Paragraph on ‘Rainy Season’
The rainy season brings heavy rainfall, filling rivers and lakes. It supports crops, replenishes water sources, and cools the Earth but can also cause floods and waterlogging in some areas.
Short Paragraph on ‘Acid Rain’
Acid rain forms when pollutants mix with water vapor in the atmosphere. It harms plants, animals, and buildings, causing environmental damage and affecting ecosystems and human health.
Why Do Lotus Leaves Repel Water?
Lotus leaves have a waxy, microscopic structure that repels water, causing droplets to roll off. This “Lotus Effect” keeps leaves clean and dry, preventing dirt and pathogens from sticking.
How Do Plants Absorb Water from the Soil?
Plants absorb water through their roots via osmosis. Root hairs take in water and nutrients, transporting them through the stem to support growth, photosynthesis, and overall plant health.
How does water travel from roots to tree tops?
Water travels through the xylem, a tissue in trees, via capillary action and root pressure. This process lifts water from roots to leaves, even at great heights.
