Plant Science
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Reasons why botanical names are important
International, Explains something about the plant, unchanging
What is the binomial system of naming plants
Genus name + Species name
What is ‘plant taxonomy’?
The practice and science of classifying organisms int0 groups or taxons and making connections between groups to help us understand them
What are gymnosperms?
Non-flowering plants whose seeds are not protected by an enclosed overy. Conifers, cycads, ginko.
What are angiosperms?
All flowering plants
What are Pteridophytes?
Less complex plants that depend on water to reproduce by spores. Ferns, horsetails, club mosses.
What are Bryophytes?
Less complex plants that depend of water to reproduce by spores. Mosses, liverworts, hornworts
What are Monocotyledonous plants?
Plants that produce just one seed leaf within their seed. Grasses, hosta, tulips
What are Eudicotyledonous plants?
Plants with 2 seed leaves within the seed. 75% of all flower plants are Eudicots.
What is a ‘plant family?’
plants that share physical characteristics like flowering or fruiting habits
Name 3 links which help group plant families
• Arrangement of flower parts. • The way the seed pod splits • The way the fruits split apart.
List 3 plant families
• Rosaceae • Brassicaceae • Asteraceae
Define ‘genus’
A group of plants within a family which share many characteristics
Define ‘species’
Basic unit of classification, it defines the individual plant. These plants can interbreed.
Define ‘cultivar’
a variation that occurs through deliberate breeding and plant selection
Which authority do cultivar names need to be registered with?
International Cultivar Registration Authority ICRA
Define ‘variety’
The rank below species in the taxonomic hierarchy. It identifies a naturally occurring variation in form within a species
Define ‘hybrid’
plants at species level within a genus that have cross-polinated and created an interspecific hybrid.
What is the male part of a flower called?
stamen
What is a group of petals called?
Corolla
What is a group of sepals called?
Calyx
What is the female part of a flower called that contains ovules
Ovary
What protects the rest of the flower when it is in bud? It is surrounded by petals.
Sepal
What is showy in order to attract pollinators?
Petals