QUESTION 1 1.1 The process whereby plants manufacture food 1.3 Abiotic factors concerning the soll of the level of acidity or alkalinity 1.4 Pants that are adapted to survive In very dry conditions 1.5 The gas that makes the highest percentage of the atmospheric gas QUESTION 2 Define the following 2.1 Hydrophyte: 2.2 Respiration: 2.3 Biotic factors:

Let's break down the questions and provide clear answers for each part. ### QUESTION 1 1.1 **The process whereby plants manufacture food**: This process is called **photosynthesis**. During photosynthesis, plants use sunlight, carbon dioxide, and water to produce glucose (a type of sugar) and oxygen. 1.3 **Abiotic factors concerning the soil of the level of acidity or alkalinity**: This refers to **pH**. The pH level of soil indicates its acidity or alkalinity, which can significantly affect plant growth and nutrient availability. 1.4 **Plants that are adapted to survive in very dry conditions**: These plants are known as **xerophytes**. Xerophytes have special adaptations, such as thick cuticles, deep roots, and the ability to store water, allowing them to thrive in arid environments. 1.5 **The gas that makes the highest percentage of the atmospheric gas**: The gas that constitutes the highest percentage of the atmosphere is **nitrogen (N₂)**, making up about 78% of the Earth's atmosphere. ### QUESTION 2 2.1 **Hydrophyte**: A hydrophyte is a type of plant that is adapted to grow in water or in very moist conditions. These plants have specialized structures that allow them to thrive in aquatic environments, such as floating leaves and aerenchyma (air-filled spaces in their tissues). 2.2 **Respiration**: Respiration is a biochemical process in which organisms convert glucose and oxygen into energy, carbon dioxide, and water. This process is essential for the survival of living organisms as it provides the energy needed for various cellular activities. 2.3 **Biotic factors**: Biotic factors are the living components of an ecosystem that affect the growth, survival, and reproduction of organisms. These include interactions with other organisms, such as competition, predation, symbiosis, and disease.