Soil and Nutrients quiz #2 Flashcards
Soil and Nutrients quiz #2
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What type of succession requires soil to be formed before plants can grow?
Secondary succession requires soil to be formed before plants can grow. Which organisms are responsible for breaking down bare rock to form soil?
Lichens and mosses are responsible for breaking down bare rock to form soil. What process is responsible for the production of soil?
Weathering of rocks and the accumulation of organic matter are responsible for the production of soil. Which type of forest is likely to have the most nutrient-rich soil: tropical rainforest, coniferous forest, deciduous forest, or desert?
Deciduous forests are likely to have the most nutrient-rich soil. Which organism helps create soil by breaking down rocks?
Lichens help create soil by breaking down rocks. Which of the following is not a nutrient that mycorrhizae help plants to obtain: nitrogen, phosphorus, potassium, or calcium?
Calcium is not a nutrient that mycorrhizae specifically help plants to obtain. What is the role of humus in soil?
Humus enriches soil with nutrients and improves its water retention and structure. How does soil pH affect nutrient absorption in plants?
Soil pH affects nutrient absorption by influencing the availability of nutrients and the solubility of minerals. What is cation exchange in the context of soil and plant nutrition?
Cation exchange is the process by which plants release protons to displace cations from soil particles, making them available for absorption. Why are root hairs important for nutrient absorption in plants?
Root hairs increase the surface area for water and nutrient absorption, enhancing the plant's ability to take up essential nutrients. What are the 17 essential nutrients required by vascular plants, and how are they categorized?
Vascular plants require 17 essential nutrients, categorized as macronutrients (needed in large amounts, such as nitrogen, phosphorus, and potassium) and micronutrients (needed in trace amounts, such as iron, zinc, and copper). Describe the process of cation exchange in soil and its importance for plant nutrient uptake.
Cation exchange is the process by which plant roots release protons (H+) into the soil, displacing nutrient cations (like Ca2+ and Mg2+) from negatively charged soil particles (clay and humus), making them available for absorption by the plant.