what is the scientific name of pechay?

Question

a vegetable or a crops

Answer 1

Brassica rapa

Answer 2

http://en.wikipedia.org/wiki/Chinese_cabbage:

There are 2 distinct groups within Brassica rapa (aka B. campestris):

Pekinensis...

The Pekinensis group is the more common of the two, especially outside Asia; names such as da baicai (lit. "large white vegetable"); petsay/pechay (Tagalog); Chinese white cabbage; nappa, or napa, cabbage; and hakusai (Japanese) usually refer to members of this group. Pekinensis cabbages have broad green leaves with white petioles, tightly wrapped in a cylindrical formation and usually, but not necessarily, forming a compact head.

The other group is Chinensis...

The Chinensis group was originally classified as its own species under the name B. chinensis by Linnaeus. When used in English, the name bok choy typically refers to Chinensis. Smaller in size, the Mandarin term xiao baicai ("small white vegetable") as well as the descriptive English names Chinese chard, Chinese mustard, celery mustard and spoon cabbage are also employed.

The answer to your question is PEKINENSIS.
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Answer 3

Both are good for you, each fruit/vegetable has different vitamins. Thus as more variety, as better. Vegetables have generally less sugar than fruits.

Answer 4

Impatiens glandulifera

Answer 5

i dunno