BPSC (Bihar) Exam > BPSC (Bihar) Questions > Ginger is a stem and not root becausea)it sto...
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Ginger is a stem and not root because
- a)it stores food material
- b)it has nodes and internodes
- c)it grows horizontally in the soil
- d)it lacks chlorophyll
- e)None of the above / More than one of the above
Correct answer is option 'B'. Can you explain this answer?
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Ginger is a stem and not root becausea)it stores food materialb)it has...
Ginger is a stem and not a root because it has nodes and internodes.
Explanation:
Ginger is a plant that is widely used as a spice and has medicinal properties. It is an underground stem called a rhizome, which is commonly mistaken for a root. Here's why ginger is considered a stem and not a root:
1. Nodes and Internodes:
One of the key characteristics of a stem is the presence of nodes and internodes. Nodes are the points on a stem where leaves, branches, or buds emerge, while internodes are the spaces between the nodes. In the case of ginger, it has distinct nodes and internodes, which are visible when the rhizome is cut or observed closely. This presence of nodes and internodes indicates that ginger is a stem.
2. Storage of Food Material:
While it is true that stems generally store food material, this alone is not sufficient to categorize ginger as a stem. Both roots and stems can store food material. However, the presence of nodes and internodes in ginger distinguishes it as a stem.
3. Growth Pattern:
The growth pattern of ginger also supports its classification as a stem. Ginger grows horizontally in the soil, similar to other underground stems such as potatoes and tubers. Roots, on the other hand, typically grow vertically into the soil.
4. Lack of Chlorophyll:
Another characteristic of ginger that supports its classification as a stem is the lack of chlorophyll. Chlorophyll is responsible for the green color in plants and is usually found in leaves and stems. Since ginger lacks chlorophyll, it cannot carry out photosynthesis like leaves do. Instead, it relies on the stored food in its rhizome for energy.
In conclusion, ginger is considered a stem and not a root because it possesses nodes and internodes, which are characteristic of stems. While it also stores food material and lacks chlorophyll, these factors alone do not determine its classification.
Explanation:
Ginger is a plant that is widely used as a spice and has medicinal properties. It is an underground stem called a rhizome, which is commonly mistaken for a root. Here's why ginger is considered a stem and not a root:
1. Nodes and Internodes:
One of the key characteristics of a stem is the presence of nodes and internodes. Nodes are the points on a stem where leaves, branches, or buds emerge, while internodes are the spaces between the nodes. In the case of ginger, it has distinct nodes and internodes, which are visible when the rhizome is cut or observed closely. This presence of nodes and internodes indicates that ginger is a stem.
2. Storage of Food Material:
While it is true that stems generally store food material, this alone is not sufficient to categorize ginger as a stem. Both roots and stems can store food material. However, the presence of nodes and internodes in ginger distinguishes it as a stem.
3. Growth Pattern:
The growth pattern of ginger also supports its classification as a stem. Ginger grows horizontally in the soil, similar to other underground stems such as potatoes and tubers. Roots, on the other hand, typically grow vertically into the soil.
4. Lack of Chlorophyll:
Another characteristic of ginger that supports its classification as a stem is the lack of chlorophyll. Chlorophyll is responsible for the green color in plants and is usually found in leaves and stems. Since ginger lacks chlorophyll, it cannot carry out photosynthesis like leaves do. Instead, it relies on the stored food in its rhizome for energy.
In conclusion, ginger is considered a stem and not a root because it possesses nodes and internodes, which are characteristic of stems. While it also stores food material and lacks chlorophyll, these factors alone do not determine its classification.
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Ginger is a stem and not root becausea)it stores food materialb)it has...
Ginger is a stem and not a root because it has nodes and internodes.
- It is a rhizome, an underground modification of the stem.
- The rhizome is a branched, prostrate, horizontally growing stem having nodes and internodes.
- It has a brownish line that represents nodes and internodes.
- It has scale leaves at nodes, axillary buds & a terminal bud.
- These leaves lack chlorophyll.
- The terminal bud gives rise to aerial shoot at the onset of a favorable condition.
- It grows above the ground & runs parallel to the ground.
- It helps the plant to propagate vegetatively.
- The nodes present in ginger give rise to both root & shoot.
- Underground modifications of stems:
- Underground stems are modified to store food inside them.
- It becomes thick & tuberous because of the storage of food.
- Various types of modifications are:
- Stem tuber: Potato.
- Bulb: Onion, Garlic, Tulips, Lilies, etc.
- Corm: Gladius, Sativus, etc.
- Rhizome: Ginger, Turmeric, Banana, Ferns, etc.
Rhizome:
- The rhizome which grows with lateral buds is called a sympodial rhizome.
- E.g: Ginger.
- The rhizome which grows through terminal buds is called a monopodial rhizome.
- E.g: Lotus.
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Ginger is a stem and not root becausea)it stores food materialb)it has nodes and internodesc)it grows horizontally in the soild)it lacks chlorophylle)None of the above / More than one of the aboveCorrect answer is option 'B'. Can you explain this answer?
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