Draw a labelled diagram of stomatal apparatus with closed stomatal pore.
Draw a labelled diagram of stomatal apparatus with closed stomatal pore.
Official answer
The stomatal apparatus consists of two guard cells that surround the stomatal pore. The guard cells are kidney-shaped and have a thick inner wall. The stomatal pore is the opening between the guard cells. When the guard cells are turgid, the stomatal pore is open, allowing for gas exchange. When the guard cells are flaccid, the stomatal pore is closed, preventing gas exchange.
Marking scheme
- 1.Guard cells
- 2.Stomatal pore
- 3.Cell wall
- 4.Cuticle
- 5.Epidermal cells
Hint
The stomatal apparatus is a critical structure in plant leaves that regulates gas exchange.
Quick oral answer
The stomatal apparatus is a critical structure in plant leaves that regulates gas exchange. It consists of two guard cells that surround the stomatal pore, which is the opening between the guard cells. The guard cells control the opening and closing of the stomatal pore, allowing for the exchange of carbon dioxide and oxygen.
Common mistakes
- 1.Drawing the guard cells as circular instead of kidney-shaped
- 2.Not labeling the stomatal pore
- 3.Not including the cell wall
Analysis and explanation
The stomatal apparatus is responsible for regulating gas exchange in plants. The guard cells control the opening and closing of the stomatal pore, which allows for the exchange of carbon dioxide and oxygen. When the guard cells are turgid, the stomatal pore is open, allowing for gas exchange. When the guard cells are flaccid, the stomatal pore is closed, preventing gas exchange.
Interesting facts
The stomatal apparatus is found in the epidermis of plant leaves.
The guard cells are sensitive to light and CO2 levels.
The stomatal apparatus plays a crucial role in photosynthesis.
Question details
Q36 of 36 questions
- Board
- CBSE
- Class
- Class 10
- Subject
- Science
- Year
- 2014
- Section
- Section SECTION-B
- Marks
- 2
- Type
- Short Answer
- Chapter
- Life Processes
- Topic
- Photosynthesis
- Bloom's level
- Knowledge
- Syllabus topic
- Nutrition
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Frequently asked questions
How many marks does this question carry in CBSE Class 10 Science 2014?
This question carries 2 marks in the CBSE Class 10 Science 2014 examination.
Which chapter does this question come from in Science?
This question is from the chapter "Life Processes" in the CBSE Class 10 Science syllabus.
What topic does this question cover in Science?
This question covers the topic "Photosynthesis" from CBSE Class 10 Science.
What type of question is this in the CBSE Class 10 Science 2014 paper?
This is a Short Answer question from Section SECTION-B in the CBSE Class 10 Science 2014 paper.