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Questions and Answers
Secondary roots in the fusiform tap root extend uniformly across the swollen root.
Secondary roots in the fusiform tap root extend uniformly across the swollen root.
False (B)
What is the process called when nitrogen-fixing bacteria convert atmospheric nitrogen into organic nitrogen compounds?
What is the process called when nitrogen-fixing bacteria convert atmospheric nitrogen into organic nitrogen compounds?
Nitrogen fixation
Which type of fleshy tap root is characterized by being broad at the base and tapering towards the apex?
Which type of fleshy tap root is characterized by being broad at the base and tapering towards the apex?
- Napiform
- Fusiform
- Conical (correct)
- Tuberous
The roots that arise vertically upwards from the soil and are found in mangroves are known as __________ roots.
The roots that arise vertically upwards from the soil and are found in mangroves are known as __________ roots.
Match the type of fleshy tap root with its description:
Match the type of fleshy tap root with its description:
What is the shape characteristic of a napiform root?
What is the shape characteristic of a napiform root?
Which type of root is primarily responsible for increasing the fertility of soil through nitrogen fixation?
Which type of root is primarily responsible for increasing the fertility of soil through nitrogen fixation?
Which of the following statements about fusiform roots is true?
Which of the following statements about fusiform roots is true?
What type of root would you expect to find in a plant growing in a swampy area, which rises vertically out of the soil?
What type of root would you expect to find in a plant growing in a swampy area, which rises vertically out of the soil?
What distinguishes tuberous tap roots from other types of fleshy tap roots?
What distinguishes tuberous tap roots from other types of fleshy tap roots?
Which type of fleshy tap root tapers towards the apex while having secondary roots all over the swollen root?
Which type of fleshy tap root tapers towards the apex while having secondary roots all over the swollen root?
What is a common feature of fleshy tap roots?
What is a common feature of fleshy tap roots?
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Study Notes
Fleshy Tap Roots
- Modified for food storage, resulting in swollen primary roots.
- Serve as a food reservoir for the plant.
Types of Fleshy Tap Roots
-
Conical Roots
- Broad at the base, tapering towards the apex.
- Secondary roots distributed throughout the swollen region.
-
Fusiform Roots
- Swollen in the middle, tapering at both ends.
- Characterized by a spindle-like shape.
-
Napiform Roots
- Thick at the base, forming a spherical shape, thinning towards the bottom.
- Food is primarily stored in the upper swollen section.
-
Tuberous Tap Roots
- No specific shape; these roots are fleshy and irregular.
- Function primarily to store reserved food.
-
Modulated Roots
- Secondary, tertiary, or primary roots develop small nodule-like swellings.
- Root nodules are home to nitrogen-fixing bacteria that convert atmospheric nitrogen into organic nitrogen compounds.
- Play a vital role in enhancing soil fertility.
-
Respiratory Roots
- Found in mangroves or coastal swamp plants.
- Emerge vertically from soil/water, equipped with lenticels for gas exchange.
- Adapted to facilitate respiration in waterlogged conditions.
Fleshy Tap Roots
- Modified for food storage, resulting in swollen primary roots.
- Serve as a food reservoir for the plant.
Types of Fleshy Tap Roots
-
Conical Roots
- Broad at the base, tapering towards the apex.
- Secondary roots distributed throughout the swollen region.
-
Fusiform Roots
- Swollen in the middle, tapering at both ends.
- Characterized by a spindle-like shape.
-
Napiform Roots
- Thick at the base, forming a spherical shape, thinning towards the bottom.
- Food is primarily stored in the upper swollen section.
-
Tuberous Tap Roots
- No specific shape; these roots are fleshy and irregular.
- Function primarily to store reserved food.
-
Modulated Roots
- Secondary, tertiary, or primary roots develop small nodule-like swellings.
- Root nodules are home to nitrogen-fixing bacteria that convert atmospheric nitrogen into organic nitrogen compounds.
- Play a vital role in enhancing soil fertility.
-
Respiratory Roots
- Found in mangroves or coastal swamp plants.
- Emerge vertically from soil/water, equipped with lenticels for gas exchange.
- Adapted to facilitate respiration in waterlogged conditions.
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