Unit 5 Advancement In Plant Form And Function Flashcards
The organs of plants are divided into ______&________
Vegetative and reproductive
When conducting tissues are present in bryophytes, they form _____
A central column of differentiated cells
In bryophytes Central column is made of
Hydrome/hydroid- which conducts water and mineral resources
Leptome/leptoid- which conducts photosynthetic products
Flattened dichotomous branched thallusbis found in
Liverworts( marchantia sp) and hornworts (anthoceros sp)
Prostate leafy axes are found in
Leafy liverworts eg riccia sp
Erect leafy axes is found in
Mosses eg sphagnum sp
Vascular tissue which form solid column without any pith is called
Protostele eg lycopodium sp
When xylem forms a cylinder around a hollow pith with phloem on both sides is
Siphonostele eg mersilea sp
When vascular bundles are seperate and concentric in a network of seperate bands is called
Dictyostele eg dryopteris
The reason why there are different types of stele in Pteridophyta is because
They are still exploring terrestrial habitat
Important attributes in higher vascular plants include
- Sterile jacket of cells around reproductive organs
- Multicellular embryo within the archegonia.
- Cuticle on aerial parts
- Complete internal transport system
All plant tissues can be divided into
Meristematic and permanent tissues
Meristematic tissues are composed of
Immature cells and are regions of active cell division
Apical meristems are at
Growing tips of roots and shoot and are responsible for increase in length
Meristematic cells are
Small, have thin walls and are rich in cytoplasm
