Summer wood is:
(1) the same as heartwood.
(2) found to the outside of each annular ring of xylem.
(3) found to the inside of each annular ring of xylem.
(4) formed throughout the growing season.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe given transverse section is of:
(1) Monocot stem
(2) Dicot stem
(3) Monocot root
(4) Dicot root
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe vascular bundle shown in the diagram is most likely to be seen in:
1. Monocot stem
2. Dicot stem
3. Monocot root
4. Dicot root
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe main function of the plant tissue shown below is:
1. Storage of nutrients
2. Providing buoyancy to submerged plants
3. Mechanical support to growing parts of a plant
4. Increase in the length of the plant
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIdentify the wrong statement in context of heartwood.
(1) Organic compounds are deposited in it
(2) it is highly durable
(3) It conducts water and minerals efficiently
(4) It comprises dead elements with highly lignified walls
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following is made up of dead cells?
(1) Xylem parenchyma
(2) Collenchyma
(3) Phellem
(4) Phloem
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe vascular cambium normal gives rise to.
(1) phelloderm
(2) primary phloem
(3) secondary xylem
(4) periderm
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyCortex is the region found between
(1) Epidermis and stele
(2) Pericycle and endodermis
(3) Endodermis and pith
(4) Endodermis and vascular bundle
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe balloon-shaped structures called tyloses
(1) Original in the lumen of vessels
(2) characterise the sapwood
(3) are exetentions of xylem parenchyma cells into vessels
(4) are linked to the ascent of sap through xylem vessels
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologySpecialised epidermal cells surrounding the guard cells are called ?
1. subsidiary cells
2. bulliform cells
3. lenticels
4. complementary cells
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology