WSU Biology 106 Exam 1 Questions With 100% Verified Answers.
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WSU Biology 106
WSU Biology 106 Exam 1 Questions With
100% Verified Answers.
Most species extinction can be traced to what four major threats? - answerClimate change,
habitat destruction, over harvesting, and the introduction of species.
Name three functions of the root? - answerAnchors the plant, absorbs mine...
WSU Biology 106 Exam 1 Questions With
100% Verified Answers.
Most species extinction can be traced to what four major threats? - answer✔Climate change,
habitat destruction, over harvesting, and the introduction of species.
Name three functions of the root? - answer✔Anchors the plant, absorbs minerals and water, and
stores organic nutrients.
What part of the root system is responsible for absorbing the majority of minerals and water? -
answer✔The root hair.
What two components create the stem? - answer✔Internodes and nodes.
What are nodes? - answer✔The points where leaves attach to the stem.
What are internodes? - answer✔The stem segment between nodes.
What are auxiliary buds? - answer✔Structures that can form lateral shoots (branches).
What is a terminal bud? - answer✔Structure located at the tip of the stem, responsible for
elongation.
What is a leaf? - answer✔A component of the shoot system that is responsible for most
photosynthesis.
What are the two main parts of a leaf? - answer✔Blade and petiole.
What is a petiole? - answer✔A stalk, joins leaf blade to node of stem.
What are the three main types of tissue systems? - answer✔Dermal, vascular, and ground.
What is the purpose of the dermal system? - answer✔To provide a protective cover of the plant.
What are two components of the dermal tissue system? - answer✔The epidermis and the
periderm.
What is the epidermis? - answer✔An outer layer of tightly packed cells.
What is the periderm? - answer✔A layer that replaces the epidermis in old, woody plants.
What is the purpose of the vascular system and what are the two main components? -
answer✔To transport materials between roots and shoots; xylem and phloem.
What is xylem? - answer✔Vascular tissue that conducts water and dissolved minerals upwards
from the root to the shoot.
What is phloem? - answer✔Vascular tissue that conducts sugars and other metabolic products;
can transport in any direction.
What is the purpose of ground tissue? What are the three main components? - answer✔To
perform metabolic functions. Parenchyma, collenchyma, and sclerenchyma.
What are qualities of parenchyma tissue? - answer✔Responsible for metabolism, contains
plastids, is typically soft and lacks secondary walls.
What are qualities of collenchyma tissue? - answer✔Provides structural support in shoots, does
not have a secondary wall.
What are qualities of sclerenchyma? - answer✔The strengthening, structural tissue of a plant;
contains a thick second wall.
What is determinant growth? - answer✔The growth of a plant that halts when a genetically pre-
determined size or age is reached.
What is indeterminate growth? - answer✔The growth of a plant that continues throughout its life.
What is a meristem? - answer✔A tissue found at the tips of roots and shoots that generates cells
for primary and secondary growth.
What is the apical meristem? - answer✔A meristem located at the tips of roots and the buds of
shoots to promote primary growth.
What are lateral meristems? - answer✔Meristems that add thickness to woody plants through
secondary growth.
What are lateral roots? - answer✔Roots that arise from the pericycle and grow horizontally.
What is primary growth? - answer✔Growth of the shoot through the apical meristem; gives rise
to nodes and internodes.
What is vascular cambium? - answer✔A plant tissue located between the xylem and phloem in
the roots and shoots; creates secondary xylem (wood) and secondary phloem.
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