100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
Previously searched by you
Previously searched by you
logo
PSE 410 Exam 2 Questions & Answers 2024/2025 $8.49
Add to cart
Quickly navigate to
Preview
  2.  
  3. PSE 410
  4.  
  5. PSE 410

Exam (elaborations)

PSE 410 Exam 2 Questions & Answers 2024/2025
 0 purchase
  • Course
  • PSE 410
  • Institution
  • PSE 410

PSE 410 Exam 2 Questions & Answers 2024/2025 Adventitious Organs - ANSWERSPlant organs that arise in "unexpected" location Adventitious roots - ANSWERSRoots that arise from stems leaves, or old root parts Adventitious Organogenesis - ANSWERSRequires: De-differentiation of previously diff...

[Show more]

Preview 2 out of 7  pages

Document information

  • August 30, 2024
  • 7
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

Subjects

  • pse 410 exam 2 questions answers

Written for

  • PSE 410
  • PSE 410

Seller

avatar-seller
Bensuda

Reviews received

Content preview

PSE 410 Exam 2 Questions & Answers
2024/2025

Adventitious Organs - ANSWERSPlant organs that arise in "unexpected" location



Adventitious roots - ANSWERSRoots that arise from stems leaves, or old root parts



Adventitious Organogenesis - ANSWERSRequires: De-differentiation of previously differentiated
cells(typically parenchyma)

-Acquired competence: to form root or shoot primordia

-Re-differentiation: into new roots or shoots



Stem cuttings - ANSWERSCuttings from stem, need to develop adventitious roots



Leaf cuttings - ANSWERS-Needs to develop adventitious shoots and roots

-Shoots arise by. Direct organogenesis: cells already competent for form buds, buds form quickly:



Indirect organogenesis, callus forms first, buds form callus

-Many species will form roots but no shoots



Wound induced roots - ANSWERS-Adventitious roots because of scaring stem cuttings

1.injured outer cells die; necrotic plate forms, wound is filled with waxy suberin

2. Layer of parenchyma cells form callus, develops into wound periderm

3. Cells in vicinity of cambium or phloem divide to form roots



Preformed root Primordia - ANSWERS+Inactive until cued to develop

+sometimes visible as aerial roots

Examples: willow, hydrangea, coleus, tomato, pothos vince

, Herbaceous plant adventitious root formation - ANSWERSOutside of, and between vascular bundles,
often phloem parenchyma

-Sometime on epidermis or elsewhere



Woody plant adventitious root formation - ANSWERS+occurs in phloem, cambium, vascular ray
parenchyma

+Epidermis, cortex, pith

+callus derived from all of the above



Stages of de novo adventitious root formation - ANSWERS1. Dedifferentiation of cells into meristematic
regions

2. Formation of root initials from newly meristematic cells

3. Development of root initials into organize root primordia

4. Root elongation: (a) root primordia elongating through cortex, pushing out sclereids (b) Two
adventitious primordia elongating through cortex and periderm



Time to root formation - ANSWERS+Variable, Some taxa are slow to form root primordia.

-Several months to form primordia, root emerge within a couple more weeks.



Direct root formation - ANSWERSEasier-to-root species, formation of primordia near vascular system



Indirect root fomation - ANSWERS-Harder-to-root species, undirected cell divsion(callus formation first)

-Callus eventually begins organized divisions

-Root primordia emerge from callus



Root cuttings - ANSWERS-Require formation of adventitious shoots and roots, shoots will appear first

-Roots form from base of shoot

-Typically useful for "suckering" plants

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

Guaranteed quality through customer reviews

Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.

Quick and easy check-out

Quick and easy check-out

You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.

Focus on what matters

Focus on what matters

Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!

Frequently asked questions

What do I get when I buy this document?

You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.

Satisfaction guarantee: how does it work?

Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.

Who am I buying these notes from?

Stuvia is a marketplace, so you are not buying this document from us, but from seller Bensuda. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for $8.49. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

67479 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 15 years now

Start selling
$8.49
  • (0)
Add to cart
Added