Plant Tissue And Organs Flashcards
(23 cards)
What are two plant organ systems
Root system
Shoot system
What is a root system
Consists of roots and other parts of the plant that it appear below the ground.
What is the shoot system
Consists of all parts of the plant above the ground
- stem, leaf and flower
What is the purpose of the root system
The roots system anchors the plant to the ground
- it absorbs water and nutrients and dissolves minerals from the soil
- transports them to the rest of the plant
- can store sugars
What is the purpose of the shoot system
STEM:
-transports water and nutrients throughout the plant
- supports the structures of the plants (leaves and flowers)
Both roots and stems have:
A:
b:
C:
A: meristematic tissue
B: dermal tissue
C: vascular bundles
Meristematic Tissue
Contains plant stem cells
(meristematic cells bracket),which allows the roots and stems to continually grow
Dermal tissue
Provides protective layer to the organs
Vascular bundles
Groups of xylem and phloem tubes
Xylem..
Transports water and minerals from the Roots to the to the leaves.
Phloem..
Transports sugar
(made from photosynthesis) from leavesto the rest of the pant
Flower and or fruits are the…
Reproductive structure of the plant
The male organ of the flower/fruit
- stamen (male organ) produces pollenon anthers.
Female organ of a fruit/flower
- pistil (female organs) produces eggs in ovaries
The process of flower reproducing
•Pollen fertilizes an egg to produce a seed in the ovary
• as the second seed develop the ovary matures and becomes a fruit.
Leafs are tasked with…
•Preforming photosynthesis to produce sugars: the food source of plants.
Formula for photo synthesis
Light energy + 6CO2 + 6H2O——> C6H12O6 + 6O2
Light energy plus 6 carbon dioxides plus 6 dihydrogen monoxide results in glucose pulse 6 oxygen
Parts of a leaf
- upper and lower epidermis
- cuticle
- Vascular bundle
- guards cells and stoma (plural stomata)
Upper and lower epidermis
Provides protection for both sides of the leaf
Cuticle
Waxy layer on top of the epidermal tissue to prevent water loss
Mesophyll
• It has a large quantity of chloroplast with chlorophyll pigment molecules
• this is where photosynthesis takes place
Vascular bundle
• It contains xylem and phloem for transport
• xylem transports water for photosynthesis
• phloem transports sugar made during photosynthesis to the rest of the plant
Guard cells and stoma (plural stomata)
• they are found in the lower epidermis layer
• stomata are tiny pores that allow leaves to take up CO2 and release O2
• guard cells surround stomata and change their shape to open/close the stomata
• stomata also allow transportation (evaperation of water from leaves)
