Plants Flashcards
Flowering plant species are called…
Angiosperms
A Meristem
A plant tissue capable of mitosis
Tap Roots
Consist of a main root that develops from the initial root that emerged from the seed (radicle)
Fibrous Roots
Form when the radicle dies away to leave a group of equal roots
Dermal tissue
Forms the covering layer on a plant
Vascular tissue
Transports materials xylem and phloem
Ground tissue
Occupies the area between vascular and dermal
Monocotyledons
One cotyledon in the seed, parallel venation, scattered vascular bundles
Dicots
Two cotyledons in the seed, reticulate venation, ring of vascular bundles
Root pressure
When water is drawn in by osmosis the build up of water causes pressure
Transpiration
Is the loss of water vapour from the leaves and other aerial parts of the plant
The rate of photosynthesis is calculated by …
Combining the carbon dioxide taken in through the stomata with the carbon dioxide formed in respiration
Stimulus
Anything that cause a reaction in an organism or any of its parts
Response
Is the activity if a cell or organism as a result of a stimulus
A tropism
A plants change in growth in response to an external stimulus
Phototropism
Plants growth in response to light
Geotropism
Plants growth in response to gravity
Thigmotropism
Plants growth in response to touch e.g ivy, creepers
Hydrotropism
Plants growth in response to water e.g roots
Chemotropism
Plants change in growth in response to chemical e.g roots towards minerals + away from heavy metals
A growth regulator
A chemical that controls the growth of a plant
Aseptic
Means that measures are taken to exclude microorganisms
Sterile
Means that all microorganisms are destroyed
Asexual reproduction
Involves only one parent
Sexual reproduction
Involves the union of two gametes
Gametes
Haploid cells capable of fusion
Stamens
are the male parts of the flower
Carpels
Female parts of flower
Pollination
The transfer of pollen from an anther to a stigma of a flower from the same species
Self-pollination
Involves the transfer of pollen from an anther to a stigma on the same plant
Cross-pollination
Involves the transfer of pollen from an anther to a stigma on a different plant of the same species
Fertilisation
The union of the male and female gametes to form a diploid zygote
Embryo
A multicellular diploid eukaryote in its earliest stage of development
