Questions and Answers
Where does the quiescent center, where initial cells divide and produce all other cells of the root, located?
Root cap
Which zone is responsible for the geotropic growth of the root?
Root cap
Where do the rhizodermis tissue (root hairs) develop and water and nutrients are absorbed?
Absorption zone
In which zone do cells start to acquire secondary walls and lateral roots develop?
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In which zone is the primary growth through apical meristem tissue found?
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Which type of plants protect their seeds within the body of a fruit?
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Which class of angiosperms has two seed leaves?
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Which type of pollen has three furrows or pores?
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In which class of angiosperms are flower parts in multiples of three?
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Which type of plants have stem vascular bundles scattered?
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Study Notes
Root Development
- The quiescent center, where initial cells divide and produce all other cells of the root, is located at the center of the root apical meristem.
- The geotropic growth of the root is controlled by the elongation zone.
- The rhizodermis tissue, where root hairs develop and water and nutrients are absorbed, forms in the zone of maturation.
- Cells start to acquire secondary walls and lateral roots develop in the zone of differentiation.
- Primary growth through apical meristem tissue is found in the zone of cell division.
Plant Characteristics
- Fleshy fruits, such as apples and bananas, protect their seeds within their body.
- Dicotyledonous plants, such as beans and peas, have two seed leaves.
- Monosulcate pollen grains have three furrows or pores.
- Monocotyledonous plants, such as grasses and lilies, have flower parts in multiples of three.
- Monocotyledonous plants also have stem vascular bundles scattered throughout the stem.
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