Assertion : Endomycorrhiza of forest trees contribute to the efficient nutrient cycling in tropical forest ecosystem.
Reason : The fungi that form mycorrhizal associations with plants make nutrient ions available to them.

[A] : Endomycorrhiza of forest trees contribute to the efficient nutrient cycling in tropical test ecosystems . [R] : The fungi that form endomycorrhizal association with plants store nutrient ions and make them available to the host plants .

[A] : Endomycorrhiza of forest trees contribute to the efficient nutrient cycling in tropical test ecosystems . [R] : The fungi that form endomycorrhizal association with plants store nutrient ions and make them available to the host plants .

[A] : Endomycorrhiza of forest trees contribute to the efficient nutrient cycling in tropical test ecosystems . [R] : The fungi that form endomycorrhizal association with plants store nutrient ions and make them available to the host plants .

[A] : Endomycorrhiza of forest trees contribute to the efficient nutrient cycling in tropical test ecosystems . [R] : The fungi that form endomycorrhizal association with plants store nutrient ions and make them available to the host plants .

Assertion : To replenish the lost nutrients in the soil, quick acting, handy nutrients are applied in the form of fertilisers. Reason : Chemical fertiliser contains the necessary plants nutrients.

Assertion: When the rain forest is removed, grasslands appear. Reason: In rain forest, nutrient cycling is slow.

Assertion : In tropical forest, the soil nutrient - poor and acidic. Reason : Decomposition is rapid and soils are subject to heavy leaching.

Assertion : Tropical rain forests are rich in flora and fauna along with microbes on this biosphere. Reason : The low latitude humid tropics harbour the rainforest ecosystems.

Assertion: Lichens are the plants growing perched on other plants. Reason: Lichens unitedly make association with algae and fungi and show mutualism.