Biology
Which one of the following parts of human brain is the regulating centre for swallowing and vomiting?

Cerebellum
Cortex
Medulla oblongata
Cerebrum

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Biology
The main function of the inner bark of a woody plant is to

Transport food from the leaves to the other parts of the plant
Act as a membrane impermeable to water and gas
Protect the plant from herbivorous animals
Transport minerals and water from the roots to the leaves

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