Plants and Animals as Living Things - JSS1 Basic science Lesson Note

Plants and animals are crucial for maintaining the balance of ecosystems and sustaining life on Earth. Plants, through photosynthesis, produce oxygen and serve as the primary source of food for many animals. They also help regulate the climate, prevent soil erosion, and provide habitats for various organisms. Animals, on the other hand, play vital roles in pollination, seed dispersal, and nutrient cycling. They contribute to biodiversity and ecosystem stability.

 

In terms of associated organs, plants have specialized structures like roots, stems, leaves, and flowers, each with specific functions. Roots anchor the plant, absorb water and nutrients from the soil, and store food. Stems provide support and transport water, nutrients, and sugars throughout the plant. Leaves are the main site of photosynthesis, where plants convert sunlight into energy. Flowers are essential for reproduction through pollination, leading to the formation of fruits and seeds.

 

Similarly, animals have specialized organs and systems that enable them to perform various functions necessary for survival. For instance, digestive systems break down food for energy and nutrients, respiratory systems facilitate gas exchange, circulatory systems transport oxygen and nutrients throughout the body, and reproductive systems ensure the continuation of the species.