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In which plant will you look for mycorrhiza and corolloid roots? Also explain what these terms mean.

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Solution

Mycorrhiza (Myco's=fungus,rize=roots) is a symbiotic association between a fungus and the roots of vascular plants. The fungus colonizes the roots of the host either intra or intercellularly. It helps in the nutrient absorption from soil for the plant. Mycorrhizal associations are present in conifers, i.e., Pinus, Cedrus, Abies and Picea.

Coralloid roots develop in Cycas. It is produced in clusters at the base of the stem and protrudes out over the ground. It is dichotomously branched and greenish in colour. It contains algal zone in the cortex. This algal zone contains blue-green algae like Anabaena and Nostoc which grow in symbiotic association with coralloid roots.


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