Which part of the plant is called as 'kitchen of the plant'?

From which part of the plant do we get the following:

Cauliflower _____

Complete the statement with the suitable set of words given:

The roots of a plant (make food/ protect the seeds/ take in water).

From which part of the plant do we get the following:

Peas _____

Name the following:

The part of the carrot plant that we eat

Where are seeds found?

Define the term:

Leaf-blade

Name a fruit that has only one seed inside it.

Guess the name of the fruit or vegetable with the given clues:

I am an orange vegetable and I grow under the ground.

I come from plants. I became Cinderella's carriage. My name begins with the letter P.