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Questions and Answers
What is the primary function of parenchyma cells in plants?
What is the primary function of parenchyma cells in plants?
What type of tissue in plants is specialized for water transport?
What type of tissue in plants is specialized for water transport?
Which plant tissue is responsible for providing support and flexibility?
Which plant tissue is responsible for providing support and flexibility?
Which of the following is NOT a function of sclerenchyma cells?
Which of the following is NOT a function of sclerenchyma cells?
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What is the role of meristematic tissues in plants?
What is the role of meristematic tissues in plants?
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The function of companion cells primarily involves supporting which type of plant cells?
The function of companion cells primarily involves supporting which type of plant cells?
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What role does the endodermis play in a plant's root structure?
What role does the endodermis play in a plant's root structure?
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What is the primary function of phloem in vascular plants?
What is the primary function of phloem in vascular plants?
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Which of the following correctly describes vessel elements?
Which of the following correctly describes vessel elements?
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Which type of vascular tissue is characterized by lacking end walls for free movement of water?
Which type of vascular tissue is characterized by lacking end walls for free movement of water?
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What type of stem is known for storing food and aiding in asexual reproduction?
What type of stem is known for storing food and aiding in asexual reproduction?
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What are sieve tube members primarily recognized for?
What are sieve tube members primarily recognized for?
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Which structure in the root helps protect the underlying tissues as the root grows?
Which structure in the root helps protect the underlying tissues as the root grows?
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Which of the following is a characteristic of herbaceous stems?
Which of the following is a characteristic of herbaceous stems?
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What process occurs through stomata that helps in water regulation in leaves?
What process occurs through stomata that helps in water regulation in leaves?
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Which component of leaves is directly responsible for optimizing the process of photosynthesis?
Which component of leaves is directly responsible for optimizing the process of photosynthesis?
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Study Notes
Plant Cells
- Plant cells are identifiable by their cell walls and large central vacuole.
- Plant cells have many types of cells adapted for specific purposes.
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Parenchyma Cells
- Storage
- Photosynthesis
- Gas exchange
- Protection
- Tissue repair and replacement
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Collenchyma Cells
- Support for surrounding tissues
- Provides flexibility for plant
- Tissue repair and replacement
-
Sclerenchyma Cells
- Support
- Transport of materials
Plant Tissues
- A tissue is a group of cells that work together to perform a function.
- A plant tissue can be composed of one or many types of cells.
- There are four different tissue types found in plants:
- Meristematic
- Dermal
- Vascular
- Ground
Plant Tissues - Vascular
-
Xylem: water carrying vascular tissue, composed of specialized cells called vessel elements & tracheid.
- Vessel elements: tubular cells stacked end to end, lack end walls, allowing free movement of water from one element to the next.
- Tracheid: tubular cells with pitted ends and end walls, less efficient at moving water than vessel elements.
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Phloem: main food-carrying tissue in vascular plants.
- Contains two types of cells:
- Sieve tube members: Contain cytoplasm but lack nuclei and ribosomes when mature.
- Companion cells: Occur next to sieve tube cells and have a nucleus.
- Contains two types of cells:
Roots
- The tip of a root is covered by the root cap.
- The root cap consists of parenchyma cells to help protect root tissues as the root grows.
- Between the epidermis and vascular tissue is the cortex.
- Next to the endodermis, towards the center of the root, is the pericycle, which produces lateral roots.
Stems
- Herbaceous stems: soft, flexible, and capable of photosynthesis.
- Woody stems: rigid and fibrous.
- Main function: support of leaves and reproductive structures.
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Stem Types & Functions:
- Tuber: food storage
- Rhizome: food storage, asexual reproduction.
- Runner: asexual reproduction.
- Bulb: food storage
- Corm: food storage
Leaves
-
Structure:
- Water travels from the roots up through the stems and into the leaves, replacing water used in photosynthesis and lost from the plant by evaporation.
- Water evaporates from the inside of a leaf to the outside through stomata in a process called transpiration, which helps pull the water column upward.
-
Function:
- The main function of leaves is photosynthesis, with many adaptations to optimize this purpose.
- Most plants have a flattened portion called the blade with a large surface area.
- The blade is attached to the stem by a stalk called a petiole
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Description
Explore the fascinating world of plant cells and tissues with this quiz. Learn about various cell types such as parenchyma, collenchyma, and sclerenchyma, and understand their functions. Dive into the four main types of plant tissues and their importance in plant structure and growth.
