1. How does the layer “X” of soil depicted in the image contribute to supporting the growth of plants?
a) Topsoil provides structural support for plants.
b) Topsoil is rich in organic matter and nutrients.
c) Subsoil stores water for plant use.
d) Subsoil is rich in organic matter and nutrients.
Answer: b) Topsoil plays a crucial role in supporting plant growth by providing the necessary nutrients and minerals that plants need to thrive.
2. Select the odd one out.
a) 
b) 
c) 
d) 
Answer: c) Styrofoam is a non-biodegradable substance whereas cardboard, jute bag and wooden utensils are biodegradable substances.
3. In an experiment to test the water-holding capacity of different soil types, which soil type would likely have the least amount of water after some time?
a) Sandy soil
b) Clayey soil
c) Loamy soil
d) Rocky soil
Answer: a) Sandy soil is composed of small, fine-grained particles that are loosely packed. These particles allow water to easily pass through the soil, resulting in poor water-holding capacity. The water quickly drains away, leaving less moisture in the soil.
4. What can happen to the land when soil erosion occurs?
a) The land gains essential nutrients
b) The land becomes flat and even
c) The land experiences increased rainfall
d) The land becomes less fertile
Answer: d) When soil erosion occurs the topsoil gets carried away by wind or water. When this layer is lost, the land becomes less fertile, making it challenging for plants to grow and thrive.
5. Sansa wants some soil for her kitchen garden that has the highest amount of nutrients available for plant uptake. Select the suitable soil for her from the following options.
a) Sandy soil
b) Clayey soil
c) Loamy soil
d) All soil types have the same amount of nutrients.
Answer: c) The presence of humus in loamy soil contributes to its high nutrient content, making it ideal for plant growth.
