What is Meristemtic region?

[Smooth Operater]

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I saw this on my kaplan notebook.

What is meristemtic region?

What is lateral and apical region?

Thanks!

 

[joonkimdds]

I saw this on my kaplan notebook.

What is meristemtic region?

What is lateral and apical region?

Thanks!

meristem is found in higher plants and represents undifferentiated cell types. the apical meristem contains cells that produce branches and flowers.

If u think these info came out of my head, I am a super genius but the fact is, i am just copying it down
i don't even know what undifferentiated cell type means or what's higher plants or what's lower plants stuff...-_-;

 

[joonkimdds]

I saw this on my kaplan notebook.

by the way, what's kaplan notebook? where can i get it?

 

[joonkimdds]

according to Schaum's easy outline page 69 it says
"these cells are meristematic; that is, they give rise to secondary cells such as secondary xylem and phloem."

hm...I don't understand this because my Campell textbook and other books say vascular cambium is what produces secondary xylem and phloem.

 

[Mackchops]

the meristem is just a layer in plants. Apical (think apex) meristem is at the tips of roots or stem and increases plant length. lateral (think... err.. lateral?) either differentiates into xylem or phloem and serves in increase the girth of the plant. xylem and phloem are the primary components of the plants vascular system with xylem bringing stuff (nutrients, water, etc) up to the leaves and also provide support (the rings of a tree. Phloem helps distribute glucose around the plant from the leaves. Hope that helps.

Mack

 

[Mackchops]

according to Schaum's easy outline page 69 it says
"these cells are meristematic; that is, they give rise to secondary cells such as secondary xylem and phloem."

hm...I don't understand this because my Campell textbook and other books say vascular cambium is what produces secondary xylem and phloem.

cambrium tissue and meristem are essentially the same thing.

 

[aranjuez]

So... here's how it works...

The meristematic cells are comparable to the stem cells in animals. They can basically become anything at all. At some point during development, they are determined to be vascular cambium. The vascular cambium can give rise to, as said above, the secondary xylem and secondary phloem.

Think of it like in animals: embryonic stem cells (totally undifferentiated) --> (after gastrulation) one layer is the ectoderm --> can develop into integument, nervous system, retina, etc. etc.

Plants: meristematic cells --> vascular cambium --> can develop into secondary xylem or secondary phloem

aranjuez