In general, embolism occur: a. in the vessel elements and tracheids after turgor loss point through air-seeding across pit membranes b. in vessel elements only, after turgor loss point through air-seeding across pit membranes c. in the vessel elements and tracheids after turgor loss point through air-seeding across plasmodesmata d. in vessel elements only, after turgor loss point through air-seeding across plasmodesmata

b. in vessel elements only, after turgor loss point through air-seeding across pit membranes

Explanation:

As in humans, embolism can happen in plants. In the case of plants, embolism occurs only in the elements of the vessel, after the point of loss of the turgor through the propagation of air through the membranes of the pits, in other words, the embolism occurs when there is air filling the empty spaces of the xylem (element of vase), creating air bubbles.

These air bubbles block the xylem's work in transporting water from the root to the other parts of the plants, that is, it reduces the plant's ability to absorb water from the soil, thus preventing the plant from carrying out not only photosynthesis, but numerous metabolic processes essential for your body to survive.

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the answers are a and c