What are the two main types of supporting tissues in plants?
Simple tissues and complex tissues.
Name the three types of simple supporting tissues.
Parenchyma, collenchyma, and sclerenchyma.
Name the three types of complex supporting tissues.
Xylem, phloem, and epidermis.
What is the primary function of parenchyma cells?
They support photosynthesis, store food, and provide rigidity when fully turgid.
Where are parenchyma tissues commonly found?
In the cortex of stems, leaf mesophylls, and fleshy fruits.
What is the main characteristic of collenchyma tissues?
They have thickened cell corners and provide strength and flexibility.
Where are collenchyma tissues located?
Beneath the epidermis in stems, petioles, and around veins in dicot leaves.
What are sclerenchyma tissues composed of?
Dead cells with uniformly thickened, lignified walls.
What is the primary role of sclerenchyma tissues?
They provide strength, rigidity, and support to plants.
Name two structures where sclerenchyma tissues are found.
Seed coats and nut shells.
What are the components of xylem tissue?
Xylem vessels, tracheids, wood fibers, and wood parenchyma.
What is the function of xylem tissues?
Conducting water and minerals from roots to leaves and providing structural support.
What are the main components of phloem tissue?
Sieve tubes, companion cells, and phloem parenchyma.
What is the function of phloem tissues?
Transporting food from production sites to storage or consumption areas and providing support.
What is the epidermis in plants?
The outermost protective cell layer.
Name one function of the epidermis.
Reducing water loss through a waxy cuticle.
What are root hairs produced by the epidermis used for?
Absorbing water and nutrients from the soil.
Name one way supporting tissues protect plants.
By resisting external forces like wind and water.
How do collenchyma tissues enable plant flexibility?
They allow plants to elongate during growth without breaking.
Why are lignin and thickened walls important in supporting tissues?
They provide strength and rigidity, helping plants maintain an upright posture.
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