Olympiad Test: Living And Non-living Things -2 - Class 4 MCQ

The Sun is the primary source of energy for organisms in ecosystems. Producers, such as plants and algae, capture energy from sunlight to create food energy. They achieve this by combining carbon dioxide and water to produce organic matter. This process initiates the transfer of energy through nearly all food webs.

• Energy originates from the Sun.
• Producers convert sunlight into food.
• This conversion supports the entire ecosystem.

Carnivore have sharp teeth to tear meat 

'P' is eating plant as well as 'Q' (animal). 'U' is eating plant as well as T (animal). 'S' and T are eating only animals. 'Q' and 'R' are eating only plant.

Tree. Silk is obtained from silkworm. Wood is obtained from tree

Water hyacinth is an aquatic plant that grows without soil.

Here are some key points about water hyacinth:

• It thrives in water, often found in ponds and lakes.
• This plant absorbs nutrients directly from the water.
• It plays a role in providing habitat for aquatic life.

In contrast, other plants like cactus, fern, and pitcher plants typically require soil for their growth.

A sunflower turns towards the sun because plants can move, even though they do not walk like animals. This movement helps them get more sunlight to grow.