Summary A level biology notes on plant and animal kingdom
46 views 0 purchase
Course
Unit A2 1 - Physiology and Ecosystems
Institution
CCEA
Full summary of plant and animal kingdoms for A-level biology students. I made this resource while studying as a resource for my revision of animal and plant biology. I found it to be a very helpful and concise summary and hope it helps you in your revision!
KINGDOM PLANTAE - SYNOPTIC LINKS:(AS1)plant structure,as2-
transport in plants/features of plants/XEROPHYTES
Plants are multicellular, eukaryotic cells, connected by plasmodesmata through
cellulose walls, are photosynthetic and contain chloroplasts.
Kingdom is subdivided into phyla according to presence/absence of specialised
conducting (vascular) tissue & whether spores/seeds are means of
reproduction and dispersal.
Plants have many adaptions for life on land- differ in their effectiveness among
different divisions
1. Mosses- multicellular plants- not differentiated into true
leaves/stems/roots.
Though there are analogous structures- have ‘leaf-like’ structures-these
may only consist of a single layer of cells- have no epidermal/mesophyll
layers.
Mosses- terrestrial plants- are restricted to moist habitats where they form
ground layer in many ecosystems.
Consist of spore-producing capsule, ‘leaves’ and rhizoids (filaments of
cells).
Intolerant of pollution as pollutants have direct access to all tissues as no
cuticle.
Feature benefit Restriction
Rhizoids for Can colonise bare rock-pioneer Limited distribution to areas
anchorage plants w/water and ions close to
surface as rhizoids don’t
penetrate soils deeply.
No cuticle Water/ions directly obtained from Restricted to moist habitats
(Except in damp environment across cell walls though can survive periods of
capsule) or of all tissues dormancy in a dry state
stomata
Absence- Water/ions absorbed by all cells so Are only a few cm in height-
vascular tissue specialised conduction tissue is not support is by turgor in cells of
essential. moss.
Spores are Dispersal of moss – spores possess Spores only germinate in
single-celled tough wall, allows them to disperse moist conditions.
haploid in air without drying out.
reproductive
structures
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 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 these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller studiousstudent112. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $4.12. You're not tied to anything after your purchase.
