Teacher Resource 4 – Keywords table
Write a definition for each keyword – to produce a revision glossary.
Keyword
Definition
Petal
Modified leaves that surround the reproductive parts of flowers
Sepal
Outer parts of the flower, usually green, that protect the flower in
bud and support the petals when in bloom
Stamen
Pollen-producing reproductive organ of a flower
Pollen
Male gamete of a flowering plant
Ovule
Location of female gamete in a flowering plant
Anther
Upper part of the stamen containing pollen
Stigma
Receives pollen during pollination
Hermaphrodite
Flowers that produce both male and female gametes
Self-fertilise
Pollen from the anther is transferred to the stigma of the same
flower
Nectar
Sugary liquid produced by flowers to attract insects
Vernalisation
Promotion of flowering by exposure to cold temperatures
Version 1
Plant reproduction
1
© OCR 2016
Keyword
Definition
Long-day plants
Flowering is induced by exposure to dark periods shorter than a
critical length
Short-day plants
Flowering is induced by exposure to a dark period longer than a
critical length
Phytochrome
A light sensitive photoreceptor that measures day length
Endosperm
Tissue in a seed, surrounding the embryo and providing nutrition
Testa
Seed coat
Plumule
Embryo shoot
Radicle
Embryo root
Cotyledon
Rudimentary leaf of the embryo of seed plants
Pollen tube
Transports the male gametes from the pollen to the ovary
Germination
The process by which a plant begins to grow from a seed
Gibberellins
Plant hormones that regulate germination
Version 1
Plant reproduction
2
© OCR 2016