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Questions and Answers
What is contained within the nuclear envelope?
What are vacuoles primarily filled with?
What term is used for the materials present in vacuoles?
What type of information does the material within the nuclear envelope provide?
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Which of the following is true about ergastic substances?
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What is the result of acid hydrolysis of starch?
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What does hydrolysis of starch with β-amylase enzyme yield?
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Which statement correctly describes the appearance of starch?
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Which sugar is produced when starch is hydrolyzed by enzymes other than β-amylase?
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What role does starch play in identifying plant types?
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What color does starch turn when tested with iodine solution?
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Which of the following is NOT a source of starch that can be detected through microscopic examination?
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Where are proteins primarily stored in plants?
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Which of the following methods is used to detect the source of starch?
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What is the primary purpose of the iodine test in starch identification?
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What is the role of crystals in plants mentioned in the content?
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What happens to calcium carbonate crystals when they are treated with dilute acids?
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Which of the following acids can dissolve calcium carbonate crystals?
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What type of crystals are mentioned as part of a plant's defense mechanism?
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What effect do calcium oxalate crystals have on herbivores?
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What shape are the guard cells of stomata in dicots?
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What type of cells are typically found accompanying guard cells in a stoma?
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What distinguishes monocot stomata from dicot stomata?
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What is a common term used for epidermal modification and appendages on plants?
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How many subsidiary cells are typically found in association with guard cells in a stoma?
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Study Notes
The Nucleus
- Contains genetic information, DNA or RNA.
- Surrounded by a nuclear envelope.
- Directs protein synthesis.
Vacuoles
- Membrane-bound organelles filled with cell sap.
Ergastic Substances (Cell Inclusions)
- Materials present in vacuoles.
- Starch:
- Found in granules of various shapes.
- Used for plant identification.
- Acid hydrolysis produces glucose.
- β-amylase enzyme hydrolysis yields maltose.
- Iodine test: starch turns blue with iodine solution.
- Protein:
- Stored as aleurone grains.
- Acts as a deterrent for animals and pests.
- Crystals:
- Calcium oxalate crystals.
- Calcium carbonate crystals dissolve with effervescence in dilute acetic, hydrochloric, or sulfuric acid.
Stomata Structure
- Consists of:
- Guard cells:
- Kidney-shaped in dicots.
- Dumbbell-shaped in monocots.
- Subsidiary cells (2 or more cells).
- Guard cells:
Epidermal Modification and Appendages
- Commonly known as hairs or trichomes.
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Description
Explore the intricate world of plant cells in this quiz focusing on the nucleus, vacuoles, ergastic substances, and stomata structure. Test your knowledge on the key organelles and their roles in plant biology. Ideal for biology students studying plant cell anatomy.
