What are the three principles organs of seed plants?
Roots.Stem and leaves
What are the functions that roots perform?
They anchor plants in the ground,They absorb water and nutrients from soil And they hold plants upright
What is the transport system of stem do?
They transferred nutrients
The principal organs in which plants carry out photosynthesis are the
Leaves
What is the adjustable ports of leaves how conserve, and what do they allow to and what do they allowed to enter and leave a plant
Adjustable pores in Leaves help conserve water while letting oxygen and carbon dioxide Enter and exit the lease
Where are the three tissue systems of plants?
dermal, vascular, Ground
Dermal tissue typically consist of a single layer of
epidermis
what is the cuticle, and what is its function ?
waxing coating that prevents water loss
what does dermal tissue consists of in roots, and what is its function?
Root hair that help absorb water
whats the function of Xylem and what type of tissue is it and what cell types are within the tissue?
- Transports water
-Vascular tissue
-lignin
whats the function of Ploem and what type of tissue is it and what cell types are within the tissue?
- Transports food and water
-Vascular tissue
-companion
vessel elements
Xylem cells arranged end to end on top of one another
Tracheids
Long, narrow xylem cells with walls that are impermeable to water
Sieve tube elements
The main phloem cells
Companion cells
Pholem cells that surround sieve tube elements
The cells that lie between dermal and vascular tissue make up what kind of tissue
Ground tissue
Whats the function of Parenchyma
site of the most of plant photosynthesis
Whats the structure of parenchyma
cells with thin cell walls and large central vacuoles
what the function of collenchyma
help support plant organs
whats the structure of collenchyma
cells with strong , flexible cell walls
whats the function of sclerenchyma
make ground tissue tough and strong
whats the structure of sclerenchyma
cells with extremely thick, rigid cell walls
the only plant tissue the produces new cells by mitosis is called
meristem
what is an apical meristem
divide rapidly as stem and roots increase length
water enters the plant through the large surface are provided by the
root hairs
what protects the apical meristem of a root
root cap
where does most of the increase in root length occur
apical meristem
what are two functions of a plant's roots?
-absorb water
-dissolve nutrients from soil
what is true about acive transport of minerals in roots
-water molecules move into the plant by active transport
-ATP is the source of energy used to pump mineral ions from the soil into the plant
-The cell membranes of root hairs contain active transport protiens
what are two important functions of stems
-produces leaves and flowers
-transfers substances in the plant
what are three systems compose a stem
-dermal
-vascular
ground tissue
the structure of a leaf is optimized for what purposes?
Photosynthesis
what type of tissue covers a leaf
Dermal
The bulk of most leaves is composed of a specialized ground tissue known as
Mesophyll
How do the carbohydrates produced in photosynthesis get to the rest of the plant
The process of phloem
What is transpiration
loss of water through leaves
why must a plant have its stomata open at least part of the time
Allows carbon dioxide, water, and oxygen to diffuse in and out of the leaf
what would happen to a plant that kept its stomata open all the time
It would suffocate and die by drowning
what is the balance plants maintain that prevents them from losing too much water
Homoeostasis
True or false:
In general, stomata are closed at night
True
what combinations of factors provides enough force to move water through the xylem tissue of even the tallest plant
Adhesion and capillary action
Cohesion
Is the attraction of molecules with the same substances
Adhesion
Is the attraction of molecules with the different substances
The tendency of water to rise in a thin tube called
Capillary action