"rise up" vs. "get up"

[Arushi]

English Language Tests, Intermediate level

ESL/EFL Test #154 "English grammar and vocabulary questions", question 3

I usually ......... up six at 6.30 a.m. every morning.

(a) awake
(b) rise
(c) get
(d) go

English Language Tests, Intermediate level

ESL/EFL Test #154 "English grammar and vocabulary questions", answer 3

I usually get up six at 6.30 a.m. every morning.

Correct answer: (c) get

Your answer was: incorrect
I usually rise up six at 6.30 a.m. every morning.
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i usually rise up at six-this stament is wrong?if yes then why?

Arushi

[Mister Micawber]

.
Get up = arise; rise. Rise alone would have the same meaning in this test question, but up is redundant except in specific definitions:

rise up--

1- stand up on the hind legs, of quadrupeds
2- come to the surface
3- take part in a rebellion; renounce a former allegiance
.
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Native English teacher at Mister Micawber's