Sclerenchyma fibres - Study guides, Revision notes & Summaries

Biodiversity - correct answer the variety of living organisms in an area. includes species diversity and genetic diversity Species diversity - correct answer the number of different species and the abundance of each species in an area Genetic diversity - correct answer the variation of alleles in the gene pool of a species Endemism - correct answer when a species is unique to a single place How is species richness counted - correct answer counting the number of species in a known are...

Describe the events of fertilisation that occur after the acrosome reaction. -Membrane of sperm and egg cell fuse together -cortical granules release contents into zona pellucida -Zona pellucida thickens -Haploid nuclei fuse Explain how phospholipids form a cell surface membrane -Hydrophilic parts associate with water -Hydrophobic parts repel water -a bilayer forms with hydrophobic parts pointing in towards the centre of the bilayer Describe the role of the CFTR protein in e...

Edexcel A Biology A level core practical Write ups. All include an introduction, hypothesis, variables, method, results, evaluations... CP6 -Identify sclerenchyma fibres, phloem sieve tubes and xylem vessels and their location within stems through a light microscope

RHS 3 - Identify a Range of Plant Tissues and Describe their Structure & Function Simple tissues: Collenchyma - Answer- The cell walls are very thick, especially at the corners and provide support for the plant even when the cell has died. Petioles of plants contain mainly Collenchyma cells. Made up of dense cells that give very strong support and still maintain shape when dead. When the cells are compressed together Fibres are long slender cells found in bundles, they quickly become lignifie...