Biology 3.3.2: Specialized Cells and Tissues
What is a vascular plant?
A plant with tissues that carry water
Which type of organism is most specialized: animal, bacteria, insect, worm, or amoeba?
Animals are more specialized; they are more complex.
An amoeba consists of a single cell and has a nucleus. What is an amoeba called?
Eukaryote
What happens when a cell is specialized?
It performs specific functions.
Which part of a green plant loses the most chloroplasts at the end of summer?
Leaf
Which part of a green plant shows the greatest decrease in chloroplasts in the fall of the year?
Leaf
Which part of a green plant shows the greatest increase in chloroplasts by the end of spring?
Leaf
What is an organism made up of many cells called?
Multicellular
Eukaryotes have specialized parts that perform specific functions. What are these specialized parts called?
Organelles
Aphids use specialized organs to pierce a plant and suck out the sap from the underside of leaves. During feeding, they can inject a toxin that slows plant growth. Which pathway would the toxins most likely travel when first inside the plant?
Phloem
How does phloem differ from xylem?
Phloem has a two-way flow.
Bacteria consist of a single cell and have no nucleus. What are bacteria called?
Prokaryotes
How do the structures within a cell allow it to specialize?
The structures allow the cell to perform specific functions.
What specialized tissues do vascular plants have that other plants do not?
Tissues for moving water around
What is the purpose of the specialized cells that produce strong odors from the corpse flower?
To attract insects
Why do many plants have specialized cells that produce colorful flowers?
To attract insects
Why do many plants have specialized cells that produce strong odors?
To attract insects
What is the purpose of the vascular system in a plant?
Transporting water
What is the role of phloem in a vascular plant?
Transports carbohydrates from the chloroplasts
What is the role of xylem in a vascular plant?
Transports material from the roots up into the plant
What is the role of xylem in a vascular plant?
Transports water and nutrients upwards
What is a single-celled organism called?
Unicellular
What is an organism made of one cell called?
Unicellular
Why do complex organisms need specialized cells?
Without them, complex organisms cannot perform different functions.
A gardener places extra nutrients in the soil of a flower bed to make the flower grow faster. Through which tissue would the nutrients first move into the flower?
Xylem
A plant grows in soil contaminated with toxins. Through which structure would the toxins first enter the plant?
Xylem
How does xylem differ from phloem?
Xylem has a one-way flow.
How does xylem differ from phloem?
Xylem is found in the roots.
