Summary
Summary PLANT TISSUES - GRADE 10 IEB LIFE SCIENCE
- Course
- Life Sciences
- Institution
- 10th Grade
Detailed and very visual concise study notes on plant tissues.
[Show more]
Seller
Follow
Content preview
Plant TissuesMeristematic Tissue
Continuously form via mitosis.
Unspecialised & undifferentiated.
Occurs in growth (dark) regions of:
Apical Meristem
Primary Growth (length)
Tips of: Roots & Shoots
Lateral Meristem
Cambium – Within the vascular bundle between the phloem &
xylem of dicotyledonous plants
Secondary Growth
Flowers, Branches
Structure:
Small
Cubic
Densely packed with no intercellular spaces
Large nucleus
Dense cytoplasm
Vacuole absent
, Ground Tissue
Parenchyma
Most general tissue type:
Dead
Thin-walled
Large Vacuoles
Rounded to elongated.
Intercellular spaces present
Aerenchyma – Filled with air & large intercellular spaces.
Chlorenchyma – Contain chloroplasts.
Functions:
Filling tissue
Storage: Food & water
Secretions: Resin, tannins (wood pigment), hormones, enzymes & nectar.
Aerenchyma
Large intercellular airspaces filled with air for gaseous exchange.
Flotation/buoyancy for aquatic-plants.
Collenchyma
Are alive, even when mature.
Irregularly thickened walls, especially in the corners.
Primary Cell walls thickened with cellulose at the corners.
Intercellular spaces absent.
Mainly found as strands in the ground tissue.
Functions:
Provides strength & support.
Stems, petioles & leaf veins.
Flexible yet firm.
Can photosynthesise if chloroplasts present.
Sclerenchyma
Hard and even thickened (lignin) secondary cell walls.
Cell walls are inelastic.
No living cell contents when mature.
Sclereids
Different shapes.
Commonly found in the shell of nuts.
Gives granular structure to pears & guavas.
Fibres
The benefits of buying summaries with Stuvia:
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
You can quickly pay through EFT, credit card or Stuvia-credit for the summaries. There is no membership needed.
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 this summary from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Snaggyelk. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy this summary for R163,00. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
59063 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy summaries for 15 years now