Chapter 36 Flashcards
What’s the difference btwn SAM & RAM
SAM- shoot apical meristem; has leaves stems and roots (primary tissues)
RAM- root apical meristem; (secondary tissues)
What are undifferentiated cells?
Cells that haven’t yet committed to being a stem cell
Determinate vs indeterminate
Determinate-> type of growth that has an end (flowers bloom)
Indeterminate-> continuously grow and grow
Tell me 2 differences btwn eudicots and monocots
1) eudicots are branched; monocots are fibrous
2) eudicots are netted; monocots are parallel
OR
3) eudicots have 4-5 flowers; monocots have 3
Do parenchyma undergo cell division?
Yes
What are the other plant tissues within the plant?
1) parenchyma
2) collenchyma
3) sclerenchyma
Which provides strength? flexibility?
1) sclerenchyma-> protects the wall fibers and the stem
2) collenchyma-> flexible cells
What is the difference btwn spongy & palisade parenchyma?
1) spongy-> is not uniformed; has a lot of space for gas exchange
2) palisade-> is stacked and uniformed
How does plant expansion work?
Undergo mitosis to make more cells; vacuole is filled with mostly water
Vacuole expands to make the cell wall nice and tall (expansins help the plant expand)
What are the plant hormones?
Auxin & gibberelic acid
Auxin
Controls the baby leaf; causes expansin to turn on ( cuts cellulose strings)
Gibberelic acid
Stimulates cell division and cell enlargement
What is the difference btwn a palmate and a pinnate compound?
Palmate-> has multiple main veins (branches out)
Pinnate-> has 1 main vein
What are simple compound leaves?
Only 1 leaf 🌿
What was the reason behind the experiment of the leaf veins?
1) they wanted to test to see if the vein was still efficient to transfer while being cut
2) study showed that palmate did better than pinnate because it had more veins
