BIO 116 EXAM 2 ACTUAL TEST QUESTIONS
AND EXPERT REVIEWED SOLUTIONS
●● root system
Answer: below ground
●● roots
Answer: anchor the plant in the ground, absorb water and minerals from
soil, and sometimes store food
●● root hairs
Answer: Increase surface area for absorption. Are typically thin
extensions of root epidermal cells primarily near tip of elongated roots
●● stems
Answer: a plant organ that produces buds, leaves, branches, and
reproductive structures. Also elongate and orient soot to maximize
photosynthesis.
●● leaves
Answer: The main photosynthetic organs of vascular plants; capture
light, gas exchange
,●● Dermal tissue system
Answer: The outer protective covering of plants. 1st line of defense
against physical damage and pathogens
●● nonwoody plants
Answer: consist of epidermis(single layer of tightly packed cells) with a
cuticle prevents water loss
●● woody plants
Answer: made primarily of cells with thick cell walls that support the
plant body. Periderm (bark) replaces epidermis
●● Dermal tissue functions
Answer: -Absorption of water, minerals at root hairs.
-Reduce water loss, reflect sunlight, defend against insects.
●● Guard cells
Answer: specialized cells that control the
opening and closing of the pores on the
surface of a leaf (gas exchange)
●● Ground tissue system
, Answer: Cells specialized for storage, photosynthesis, support and is a
form of short distance transport. Most of the cells consist of this system.
●● Vascular tissue system
Answer: -Transport materials throughout plant body
-Mechanical support
●● Xylem
Answer: vascular tissue that carries water upward from the roots to
every part of a plant
●● Phloem
Answer: vascular tissue that transport sugar from where made(mostly
leaves) to where needed(usually roots and sites growth)
●● Water uni-directional transport
Answer: 1. soil
2. root hairs
3. root xylem
4. stem xylem
5. leaf xylem
6. leaf mesophyll
7. stomata
AND EXPERT REVIEWED SOLUTIONS
●● root system
Answer: below ground
●● roots
Answer: anchor the plant in the ground, absorb water and minerals from
soil, and sometimes store food
●● root hairs
Answer: Increase surface area for absorption. Are typically thin
extensions of root epidermal cells primarily near tip of elongated roots
●● stems
Answer: a plant organ that produces buds, leaves, branches, and
reproductive structures. Also elongate and orient soot to maximize
photosynthesis.
●● leaves
Answer: The main photosynthetic organs of vascular plants; capture
light, gas exchange
,●● Dermal tissue system
Answer: The outer protective covering of plants. 1st line of defense
against physical damage and pathogens
●● nonwoody plants
Answer: consist of epidermis(single layer of tightly packed cells) with a
cuticle prevents water loss
●● woody plants
Answer: made primarily of cells with thick cell walls that support the
plant body. Periderm (bark) replaces epidermis
●● Dermal tissue functions
Answer: -Absorption of water, minerals at root hairs.
-Reduce water loss, reflect sunlight, defend against insects.
●● Guard cells
Answer: specialized cells that control the
opening and closing of the pores on the
surface of a leaf (gas exchange)
●● Ground tissue system
, Answer: Cells specialized for storage, photosynthesis, support and is a
form of short distance transport. Most of the cells consist of this system.
●● Vascular tissue system
Answer: -Transport materials throughout plant body
-Mechanical support
●● Xylem
Answer: vascular tissue that carries water upward from the roots to
every part of a plant
●● Phloem
Answer: vascular tissue that transport sugar from where made(mostly
leaves) to where needed(usually roots and sites growth)
●● Water uni-directional transport
Answer: 1. soil
2. root hairs
3. root xylem
4. stem xylem
5. leaf xylem
6. leaf mesophyll
7. stomata
