Biology Exam 3
Studied by 0 people
Call with Kai
Learn
Practice Test
Spaced Repetition
Match
Flashcards
Knowt Play1/24
There's no tags or description
Looks like no tags are added yet.
Name | Mastery | Learn | Test | Matching | Spaced | Call with Kai |
|---|
No study sessions yet.
25 Terms
What is Water Potential?
The potential energy of water
How does water move?
Water moves from a HIGH water Potential to a LOWER water potential
What are the 3 steps of the journey of water?
From soil to root cells
Up the roots and up the stem
From stems to leaves
How does water get from the soil to root cells?
Increasing concentration of solutes in root cells, this creates low water potential (causing the water to move to root cells from the soil)
How does water get up the roots and up the stem?
Cohesion and adhesion draw the water up the xylem
How does water get from the stems to the leaves?
Transpiration creates negative water potential in leaves, causing the water to move from the xylem to the leaves
What does photosynthesis produce?
Photosynthates
What are some examples of photosynthates?
Sucrose, Leaves, and roots, young shoots, and developing seeds
What is sucrose?
Something that is produced by “sources”
Where are leaves transported too during photosynthesis?
“Sinks”
What can roots, young shoots, or developing seeds be?
Up or down
What are the 3 steps of Translocation?
First, the photosynthates move from source cells to phloem by active transport. Then, osmosis causes water to move from nearby xylem to phloem. Last, the phloem contents move to sinks, which have a lower water potential.
In the first step of Translocation, what is being used up?
Energy
What does the second step of Translocation cause?
An increase in water potential in phloem
Are animals autotrophs or heterotrophs?
Heterotrophs
What types of heterotrophs can animals be?
Carnivores, Herbivores, Omnivores, or Parasites
What do all animals (except for sponges) have?
A complex tissue structure
What do animals NOT have?
A cell wall (their structures are extracellular)
What type of life cycle does an animal have?
A Diplontic Life Cycle (the multicellular form is diploid)
What are most animals?
Motile (however, some can be sessile)
What do all animals have?
Complex development and a fixed body plan