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Chapter 44: Problem 12

What kinds of symbiotic relationships help plants acquire nutrients?

Short Answer

Expert verified
Various symbiotic relationships help plants acquire nutrients, including mycorrhizae, Rhizobium bacteria, epiphytes, and mutualistic interactions between carnivorous plants and microbes. Mycorrhizae involve soil fungi that aid in nutrient absorption, Rhizobium bacteria assist legume plants in nitrogen fixation, epiphytes collect nutrients from the air and rain on their host plants, and carnivorous plants utilize microbes to break down trapped insects for nutrients. These relationships support plant growth, soil health, and ecosystem diversity.

Step by step solution

01

Introduction to Symbiosis

Symbiosis is a biological interaction between two different organisms, where both individuals benefit from the relationship. In the context of plants, symbiotic relationships can help them acquire essential nutrients more efficiently, augment their growth, and improve their overall health.
02

Mycorrhizae

Mycorrhizae are the symbiotic relationships between plant roots and soil fungi. The fungi form a network around the plant roots, helping them absorb essential nutrients like phosphorus, nitrogen, and other micronutrients from the soil. In return, the plant provides the fungi with sugars and carbohydrates produced through photosynthesis. An example of a plant with mycorrhizal relationships is the tomato plant, which benefits from increased nutrient uptake and improved disease resistance.
03

Rhizobium Bacteria

Rhizobium bacteria form a symbiotic relationship with the roots of leguminous plants, such as beans, peas and clover. The bacteria can convert atmospheric nitrogen into a form that the plant can absorb and utilize, called nitrogen fixation. This process allows legume plants to grow in nitrogen-poor soils and also benefits other plants in the ecosystem by improving the soil's nitrogen content. In return, the plants provide the bacteria with carbohydrates and other organic compounds.
04

Epiphytes

Epiphytes are plants that grow on other plants, usually trees, without causing harm to the host. They have a symbiotic relationship with their hosts, collecting nutrients from the air, rain, or debris accumulating around them. Examples of epiphytes include bromeliads, mosses, and orchids. The host plant provides support and a place to grow, while the epiphytes do not cause any harm or competition for resources.
05

Carnivorous plants and microbes

Some carnivorous plants, like pitcher plants and sundews, have a mutualistic relationship with microbes. Insects trapped inside these plants decompose with the help of the microbes, breaking down the insects and making nutrients like nitrogen more readily available for the plants. The microbes, in turn, receive a stable habitat and constant food supply. In summary, there are various symbiotic relationships that help plants acquire nutrients, including mycorrhizae, Rhizobium bacteria, epiphytes, and carnivorous plants that engage in mutualistic interactions with microbes. These relationships play a critical role in supporting plant growth, improving soil health, and maintaining diverse ecosystems.

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