Meristems Flashcards
What is an apical meristem?
A region of actively dividing cells at the tips of root and shoot in plants.
True or False: Apical meristems are responsible for primary growth in plants.
True
Fill in the blank: The apical meristem contributes to the formation of ___.
new leaves and stems
What type of growth is primarily associated with apical meristems?
Primary growth
Multiple Choice: Which of the following is NOT a component of apical meristem? A) Protoderm B) Ground meristem C) Vascular cambium
C) Vascular cambium
What are the two main types of apical meristems?
Shoot apical meristem and root apical meristem
True or False: Apical meristems can differentiate into various types of tissues.
True
What is the role of the shoot apical meristem?
To produce new leaves and flowers and elongate the stem.
Fill in the blank: The root apical meristem is protected by a structure called the ___.
root cap
Multiple Choice: Which hormone is primarily involved in promoting cell division in apical meristems? A) Ethylene B) Auxin C) Abscisic acid
B) Auxin
What is the significance of the quiescent center in root apical meristems?
It serves as a reservoir of stem cells for future growth.
True or False: Apical meristems are found only in flowering plants.
False
What is the primary function of the protoderm in apical meristems?
To give rise to the epidermis of the plant.
Fill in the blank: The ground meristem produces ___.
ground tissues
Multiple Choice: Which tissue is formed from the vascular meristem? A) Parenchyma B) Xylem C) Phloem
B) Xylem and C) Phloem
What is the main characteristic of meristematic tissue?
It consists of undifferentiated cells capable of division.
True or False: Apical meristems are static structures that do not change over time.
False
What type of growth do apical meristems contribute to in roots?
Elongation and branching
Fill in the blank: The activity of apical meristems is influenced by environmental factors such as ___.
light and gravity
Multiple Choice: Which of the following is a key factor in the differentiation of cells in apical meristems? A) Temperature B) Water C) Hormones
C) Hormones
What is the term for the protective layer of cells at the tip of roots?
Root cap
True or False: Apical meristems can regenerate after damage.
True
What is the function of the lateral meristems?
To facilitate secondary growth and increase girth.
Fill in the blank: The shoot apical meristem is typically located at the ___.
tip of the stem
Multiple Choice: Which plant hormone is involved in apical dominance? A) Cytokinin B) Auxin C) Gibberellin
B) Auxin
What is the role of the intercalary meristem?
To allow for growth at the nodes of stems.
