test multiple answers, 18.1 and 18.2 Flashcards
what are the main tissues of the plants?
Roots, Stems, and leaves include specialized tissue systems that help the plants thrive and grow. The 3 tissue systems are dermal, vascular, and ground tissue.
What does dermal tissue include?
It includes a sing layer of cells called the epidermis. The other surfaces of these cells are covered in a waxy cuticle layer, protecting them from water loss. The layers help protect the plant from water loss.
What does Vascular Tissue include?
Xylem and Phloem. These tissues support the plant body and transport water and nutrients throughout the plant.
What does Ground Tissue do ?
Ground Tissue produces and stores sugars, contributes to physical support of the plants. Edible portions of plants are ground tissue.
where does the plants tissues grow
Plant growth happens in meristems.
What is meristems?
region of unspecialized cells responsible for continuing growth throughout a plants lifetime
how do meristems and flower grow? their development
pattern of gene expression transforms apical meristems into floral meristems, flower development begins. Floral meristems produce a plants reproductive organs and colorful flowers.
short ans: meristems into floral meristems
floral meristems produce a plants reproductive organs and colorful flowers.
what are the different structures and functions of roots?
When seeds being to sprout (grow), they pull out roots to draw water and nutrients from the soil. Rapid cell growth pushes the growing root tips down into the soil, providing, the plant raw materials to feed developing stems and leaves.
How many systems are there of roots and what are they ?
Roots have 2 systems of roots and they are called Taproot and Fibrous roots.
What are taproots?
One of the systems of roots and is the primary large root that can stretch deep into soil.
What are fibrous roots?
In plants like grasses, the branched roots that grow from the base of the stem and helps plants anchor topsoil in place.
short ans: helps plants grow from the base of the stem and helps anchor topsoil in place.
What tissue systems are all found in roots?
Dermal, Vascular, and Ground tissue are all found in roots.
What is epidermis?
In plants, single layer of cells that make up dermal tissue.
What does a mature root have ?
It has an outside layer, an epidermis and contains vascular, and ground tissue.
What do roots support?
Root supports a plant, anchor it, store food, and absorbs water and nutrients from soil.
From soil, what do plants absorb?
They absorb inorganic nutrients, like nitrogen, phosphorus, potassium, magnesium, and trace elements.
What are some inorganic nutrients?
Phosphorus, potassium, magnesium, and trace elements.
What does the cell membranes on the root epidermis use? and transports what?
It uses protein to transport dissolved nutrients from soil into the plant.
What do cells in all of the 3 tissue systems do?
They work together to transport water into roots.
What is the vascular cylinder enclosed by?
The endodermis.
What is a Casparian Strip ?
Short ans: cells meet, cell walls form a waterproof zone called the Casparian Strip.
Definition: It is a waterproof strip that surrounds plant endodermal cells and is involved in the one way passage of materials into the vascular cylinder in plant roots.
What is the structure of the Casparian strip?
The structure creates a one way passage of water and nutrients into the vascular cylinder.
water is forced into where?
travels upwards as root forces it into the vascular cylinder and into the xylem. As more water is forced, water in the xylem is forced into the roots.
