A major characteristic of the monocot root is the presence of:
1. | Scattered vascular bundles |
2. | Vasculature without cambium |
3. | Cambium sandwiched between phloem and xylem along the radius |
4. | Open vascular bundles |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyCompared to a dicot root, a monocot root has:
1. Many xylem bundles
2. Inconspicuous annual rings
3. Relatively thicker periderm
4. More abundant secondary xylem
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe annular and spirally thickened conducting elements generally develop in the protoxylem when the root or stem is:
1. maturing
2. elongating
3. widening
4. differentiating
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAnatomically, fairly old dicotyledonous root is distinguished from the dicotyledonous stem by:
1. absence of secondary xylem
2. absence of secondary phloem
3. presence of cortex
4. position of protoxylem
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyPassage cells are thin-walled cells found in:
1. | endodermis of roots facilitating rapid transport of water from cortex to pericycle |
2. | phloem elements that serve as entry points for substances for transport to other plant parts |
3. | testa of seeds to enable emergence of growing embryonic axis during seed germination |
4. | central region of style through which the pollen tube grows towards the ovary |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology