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What are the main characteristics of adv...

What are the main characteristics of adventitious roots?

A

One large, Central root

B

Central dominating root

C

Thin moderately branched roots

D

All of the above

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The correct Answer is:
### Step-by-Step Solution: 1. **Definition of Adventitious Roots**: Adventitious roots are roots that develop from non-root tissues, typically from the stem or leaves, rather than from the primary root system. 2. **Characteristics of Adventitious Roots**: - **Origin**: They can arise from various parts of the plant, including stems and leaves, which distinguishes them from primary roots that develop from the radicle of the seed. - **Structure**: Adventitious roots are often thin and moderately branched. They do not form a single large central root; instead, they spread out and can form a network. - **Functionality**: These roots can serve various functions, such as providing additional support, enhancing nutrient and water absorption, and facilitating vegetative reproduction. 3. **Examples**: - **Mangroves**: These trees have roots that emerge from the stem and extend into the soil and water, allowing them to stabilize in their wetland environment. - **Oak Trees and Cypress Trees**: These also exhibit adventitious roots, showcasing the diversity of plants that utilize this root type. 4. **Conclusion**: The main characteristic of adventitious roots is that they are thin and moderately branched, rather than having a single large or central root. Therefore, the correct answer to the question is option C: thin moderately branched root.
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