Podcast
Questions and Answers
What is the defining characteristic of a suffruticose stem?
What is the defining characteristic of a suffruticose stem?
- It grows only in tropical regions.
- Lower parts are woody, while the upper parts are herbaceous. (correct)
- The stem is herbaceous throughout.
- It has a completely woody structure.
Which plant structure is identified as having hollow internodes and enlarged nodes?
Which plant structure is identified as having hollow internodes and enlarged nodes?
- Climbing stem
- Culm (correct)
- Creeping stem
- Suffruticose stem
Which of the following describes a creeping plant stem?
Which of the following describes a creeping plant stem?
- The main axis grows upright.
- It produces vertical shoots exclusively.
- The main axis lies along the ground. (correct)
- It has a thick woody base.
What is a common example of a suffruticose stem?
What is a common example of a suffruticose stem?
What term is used to describe a surface that is smooth and free from hair?
What term is used to describe a surface that is smooth and free from hair?
Which of the following describes a stem characterized by projections or stiff structures?
Which of the following describes a stem characterized by projections or stiff structures?
What distinguishes culm from other types of stems?
What distinguishes culm from other types of stems?
What is the characteristic of a stem that breaks quickly, resulting in a smooth fractured surface?
What is the characteristic of a stem that breaks quickly, resulting in a smooth fractured surface?
Which feature would describe a stem that is not smooth and feels uneven or jagged?
Which feature would describe a stem that is not smooth and feels uneven or jagged?
What term describes a stem that has fine lines or wrinkles on its surface?
What term describes a stem that has fine lines or wrinkles on its surface?
What is the morphology of the stem of Hyoscyamus?
What is the morphology of the stem of Hyoscyamus?
Which characteristic is true about the stem of Lobelia?
Which characteristic is true about the stem of Lobelia?
How do the stems of Hyoscyamus and Lobelia differ?
How do the stems of Hyoscyamus and Lobelia differ?
What describes the stem of Hyoscyamus in terms of texture?
What describes the stem of Hyoscyamus in terms of texture?
What morphology does Lobelia's stem exhibit?
What morphology does Lobelia's stem exhibit?
What is the color range of the powder of ergot?
What is the color range of the powder of ergot?
Which of the following describes the odor of powder of ergot?
Which of the following describes the odor of powder of ergot?
How is the taste of powder of ergot characterized?
How is the taste of powder of ergot characterized?
Which of the following microscopic characteristics is associated with powder of ergot?
Which of the following microscopic characteristics is associated with powder of ergot?
What is the texture of the cell walls found in powder of ergot as seen microscopically?
What is the texture of the cell walls found in powder of ergot as seen microscopically?
What is ergotism primarily caused by?
What is ergotism primarily caused by?
Which type of ergotism is characterized by gangrenous symptoms?
Which type of ergotism is characterized by gangrenous symptoms?
Which of the following is NOT a commonly recognized form of epidemic toxicity associated with ergotism?
Which of the following is NOT a commonly recognized form of epidemic toxicity associated with ergotism?
What consequence does ergotism result from?
What consequence does ergotism result from?
In the context of ergotism, what does the term 'epidemic toxicity' refer to?
In the context of ergotism, what does the term 'epidemic toxicity' refer to?
Flashcards
Suffruticose stem
Suffruticose stem
The lower part of the stem is woody, while the upper part is herbaceous.
Culm
Culm
A type of stem with hollow internodes and enlarged nodes.
Creeping stem
Creeping stem
A stem that grows horizontally along the ground.
Thyme
Thyme
Signup and view all the flashcards
Glabrous
Glabrous
Signup and view all the flashcards
Spiny stem
Spiny stem
Signup and view all the flashcards
Culm's characteristic
Culm's characteristic
Signup and view all the flashcards
Short fracture
Short fracture
Signup and view all the flashcards
Rough stem
Rough stem
Signup and view all the flashcards
Striated stem
Striated stem
Signup and view all the flashcards
Hyoscyamus stem morphology
Hyoscyamus stem morphology
Signup and view all the flashcards
Lobelia stem morphology
Lobelia stem morphology
Signup and view all the flashcards
Difference between Hyoscyamus and Lobelia stems
Difference between Hyoscyamus and Lobelia stems
Signup and view all the flashcards
Hyoscyamus stem texture
Hyoscyamus stem texture
Signup and view all the flashcards
Lobelia stem morphology
Lobelia stem morphology
Signup and view all the flashcards
Ergot powder color range
Ergot powder color range
Signup and view all the flashcards
Ergot powder odor
Ergot powder odor
Signup and view all the flashcards
Ergot powder taste
Ergot powder taste
Signup and view all the flashcards
Microscopic characteristics of ergot powder
Microscopic characteristics of ergot powder
Signup and view all the flashcards
Cell walls texture in ergot powder
Cell walls texture in ergot powder
Signup and view all the flashcards
Ergotism cause
Ergotism cause
Signup and view all the flashcards
Gangrenous type of ergotism
Gangrenous type of ergotism
Signup and view all the flashcards
Hemorrhagic type of ergotism
Hemorrhagic type of ergotism
Signup and view all the flashcards
Cause of ergotism
Cause of ergotism
Signup and view all the flashcards
Epidemic toxicity (ergotism)
Epidemic toxicity (ergotism)
Signup and view all the flashcards
Study Notes
Stem Types
- Suffruticose or shrubby stem: Woody at the base, herbaceous at the top. Example: Thyme.
- Culm: Hollow internodes with enlarged nodes. Example: Maize.
- Creeping: Main axis of plant lies along the ground.
Stem Surface Features
- Glabrous or smooth: No hair or other surface features.
- Glossy: Shiny surface.
- Rough: Uneven surface.
- Hairy: Covered with hairs.
- Spiny: Has spines.
- Striated or wrinkled: Has lines or grooves on the surface.
Stem Fracture
- Short: Breaks easily, leaving a smooth fracture surface.
Hyoscyamus (Henbane)
- Stem: Cylindrical, grayish yellow, hairy, and hollow.
- Flowering Stage: The stem typically reaches its full length towards the end of flowering.
Lobelia
- Stem: Angular, irregularly furrowed.
Ergot (Claviceps purpurea)
- Powder: Greyish to purplish brown.
- Odor: Disagreeable.
- Taste: Disagreeable and oily.
- Microscopic Features: Numerous small, unequal, rounded cells with thin, highly refractive chitinous walls.
- Toxicity: Ergotism is caused by consuming ergotized rye bread. Two main forms of ergotism are:
- Gangrenous type (St. Anthony's Fire): Characterized by gangrene in the extremities.
- Convulsive type: Causes seizures, hallucinations, and other neurological symptoms.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Related Documents
Description
This quiz explores various types of plant stems, their surface features, and specific examples such as Hyoscyamus and Lobelia. Test your knowledge on stem characteristics, fractures, and the unique traits of plants such as maize and henbane.
