Questions

In the brain cerebellum, the arbor vitae refers to the cerebellar white matter which resembles the structure of arborvitae plant leaves and branches structure.

Yes, all the above given sentences have an interjection.

1. Hey ! is an interjection in the sentence , Hey!, where did I park my car? 

2. Well is an interjection in the sentence, Well!, that's a relief.

3. Oh! is an interjection in the sentence , Oh!, now I remember where i put my wallet.

One word substitution for Be the embodiment or perfect example of is Personify. Personify means represent or embody (a quality, concept, etc.) in a physical form.

Characterise: describe the distinctive nature or features of.

Idol: an image or representation of a god used as an object of worship.

Signify: be an indication of.

The resting place of Morarji Desai is Abhay Ghat.