Quiz 6 Flashcards
(17 cards)
Vascular plants consist of what?
Dermal tissue: to prevent damage and water loss
Vascular tissues: to do all of the conducting of material
Ground tissue: the most abundant tissue type, which carry out some of the most important functions of plant life — including photosynthesis and store leftover food.
Primary growth
Plants limited to this stage are herbaceous and stop at the ground tissue, dermal tissue, and vascular tissue. They are small, flexible, soft and they died down to the root
Secondary growth
Allows plants to grow taller and wider. This is made possible by the development of additional tissues, particularly woody tissues
All vascular plants are organized into three main organs:
- root:absorbs water and nutrients and keeps the plant anchored in the ground
- stem: it contains structures that transport fluids, store nutrients, and is home to specialized cells called meristems. Meristems are responsible for creating new growth and to support the leaves
- leaves: where the plant exchanges gasses wit the atmosphere and collects sunlight to manufacture food with the help of water and minerals collected through the roots
Each of the three main organs of a vascular plant contain three tissues, which together work to absorb, conduct, and exploit water
Dermal tissue, vascular tissue, and ground tissue
The epidermis of a plant
Is in smaller non-woody plants and is a thin layer of cells keeping things out, but
The cuticle of a plant
Prevents water loss
Trichomes of a plant
Are hairlike structures that help keep insects at bay and secrete toxic and sticky fluids
Roots hairs on the roots of a plant
Maximize surface area for absorption and is were they generally absorb the water they need
Parenchyma or visceral flesh
Make up the dermal tissue and are the most basic essential building blocks for vascular plants. These are the most abundant plant cells. They are thin and flexible and can perform all kinds of functions depending on their location
Collenchyma
Designed for moving stuff and structural support. And are elongated cells wit thicker cells walls. Provide structure for herbaceous plants and young structures like new shoots l. Celery is mostly made up of these cells
Sclerenchyma
Found in larger woody plants, especially in the xylem.The have even thicker cell walls made of lignin which makes wood woody. When they reach maturity they die.
Mesophyll
A type of tissue meaning middle and leaf. This sits between the top and bottom of the epidermis
Ground tissue
Any tissue that is not dermal or vascular and is chocked full of food.
The mesophyll chock full of parenchyma cell of various shapes and many of these arranged to les CO2 and other material flow between them. These cells contain the photosynthetic organelles called chloroplasts
B
Stomata
Tiny openings in the epidermis. Around each stoma are two guard cells at both ends that regulate its size and shape. When conditions are dry, the guard cells are limp, they stick together, closing the stomata. But when the leaf is flush with water, the guard cells plump up and now out from each other opening the stoma to allow water to evaporate and let carbon dioxide in. This is what allies evapotransportation to take place and photosynthesis
The phloem
Is the second type of vascular tissue besides xylem. The sugar exits the leaf here. And is mostly made of of cells stacked in tubes and perforated plates at either end.
