Ch. 21- Plant Structure And Function Flashcards
The most common type of plant cell- stores starches, oils, and water for the plant
Parenchyma
What do parenchyma cells have?m
Thin walls and large water filled vacuoles in the middle
What do both chloroplasts and colorless plastids have in parenchyma cells?
The ones in the roots and stems store starch
What is the special ability of parenchyma cells?
The ability to divide throughout their lives and are important in healing wounds and regenerating parts
Has cell walls that range from thin to thick, providing support while still allowing the plant to grow
Collenchyma cells
What cells are common in the younger tissues of leaves and shoots?
Collenchyma cells
What cells form strands?
Collenchyma cells
Ex. Celery strings
Collenchyma cells
Why are collenchyma cells unique?
Flexible
Why can collenchyma cells stretch and change size?
Cell walls don’t have lignin
Thick walled, lignin rich cells that form a supportive plant tissue
Sclerenchyma cells
What are sclerenchyma cell walls like?
Have two cell walls which makes the cells tough and rigid due to the lignin in it
Where can sclerenchyma cells not grow?
Can’t grow with the growth and found in parts of the plants that aren’t lengthening
When do sclerenchyma cells die?
When reach maturity such as in the vascular system
What are the 3 basic tissues?
Dermal, ground, and vascular tissues
