Question:
Which of the following cellular structure is found only in a plant cells?
(1). Glyoxysomes
(2). Vacuoles
(3). Lysosomes
(4). Cytoskeleton
Which of the following cellular structure is found only in a plant cells?
(1). Glyoxysomes
(2). Vacuoles
(3). Lysosomes
(4). Cytoskeleton
(1). Glyoxysomes
(2). Vacuoles
(3). Lysosomes
(4). Cytoskeleton
Show Hint
Associate glyoxysomes with the glyoxylate cycle in germinating seeds.
This lipid-to-sugar pathway is a hallmark of plant metabolism, making glyoxysomes a plant-specific organelle.
This lipid-to-sugar pathway is a hallmark of plant metabolism, making glyoxysomes a plant-specific organelle.
Updated On: Jul 31, 2026
- Glyoxysomes
- Vacuoles
- Lysosomes
- Cytoskeleton
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Verified By Collegedunia
The Correct Option is A
Solution and Explanation
Step 1: Understanding the Concept:
Different eukaryotic kingdoms possess specialized subcellular organelles that are adapted to support their unique metabolic and physiological roles.
Plant cells contain several structures that are absent in animal cells to support photosynthesis, cell wall maintenance, and specialized seed germination.
Step 2: Detailed Explanation:
Let us examine the distribution of each organelle across eukaryotic cells:
- Glyoxysomes (1): Glyoxysomes are specialized microbodies (peroxisomes) found exclusively in plant cells, particularly in the lipid-rich storage tissues of germinating seeds.
They contain the key enzymes of the glyoxylate cycle (isocitrate lyase and malate synthase), which allows the conversion of stored fats into carbohydrates. This conversion is crucial for supplying energy to the developing embryo before photosynthesis begins.
- Vacuoles (2): While large central vacuoles are characteristic of mature plant cells, vacuoles or vacuole-like lysosomal compartments are also found in fungi, protists, and some animal cells.
- Lysosomes (3): Lysosomes are membrane-bound digestive organelles typical of animal cells.
- Cytoskeleton (4): The cytoskeleton (consisting of microtubules, actin filaments, and intermediate filaments) is a universal structural feature found in all eukaryotic cells.
Consequently, glyoxysomes are the only structure listed that is unique to plant cells.
Step 3: Final Answer:
Glyoxysomes are found only in plant cells, which corresponds to option (A).
Different eukaryotic kingdoms possess specialized subcellular organelles that are adapted to support their unique metabolic and physiological roles.
Plant cells contain several structures that are absent in animal cells to support photosynthesis, cell wall maintenance, and specialized seed germination.
Step 2: Detailed Explanation:
Let us examine the distribution of each organelle across eukaryotic cells:
- Glyoxysomes (1): Glyoxysomes are specialized microbodies (peroxisomes) found exclusively in plant cells, particularly in the lipid-rich storage tissues of germinating seeds.
They contain the key enzymes of the glyoxylate cycle (isocitrate lyase and malate synthase), which allows the conversion of stored fats into carbohydrates. This conversion is crucial for supplying energy to the developing embryo before photosynthesis begins.
- Vacuoles (2): While large central vacuoles are characteristic of mature plant cells, vacuoles or vacuole-like lysosomal compartments are also found in fungi, protists, and some animal cells.
- Lysosomes (3): Lysosomes are membrane-bound digestive organelles typical of animal cells.
- Cytoskeleton (4): The cytoskeleton (consisting of microtubules, actin filaments, and intermediate filaments) is a universal structural feature found in all eukaryotic cells.
Consequently, glyoxysomes are the only structure listed that is unique to plant cells.
Step 3: Final Answer:
Glyoxysomes are found only in plant cells, which corresponds to option (A).
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