The body of a land plant is often covered with a waxy to prevent dessication. 1) gametangium 2) cuticle
3) sporangium 4) thallus

Cuticle refers to the waxy coating which protects the land plants from desiccation.  

Option 2

Explanation:

When the plants are present on the land, during drought-like conditions, they become victims of desiccation. To overcome this adverse condition, plants surviving on land have a special protective waxy covering called cuticle.

The cuticle covers all the parts of the plants such as leaves, stem, young shoots, etc and acts as a protective coat. It prevents the transpiration process in the land plant through which water from the plant evaporates and prevents them from desiccation.

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