The region of secondary xylem which comprise dead element with highly lignified walls is called
(1) Casparian strip
(2) Heartwood
(3) Sapwood
(4) Bark
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe peripheral region of secondary xylem lighter in colour is
(1) Sapwood
(2) Heartwood
(3) Annular wood
(4) Bark wood
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyCork cambium is also called
(1) Phellogen
(2) Annular ring
(3) Early wood
(4) Late wood
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyPhellogen, phellem and phelloderm are collectively known as
(1) Phellogram
(2) Periderm
(3) Cork
(4) Phalanges
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyBark that is formed early in season is called __________ bark.
(1) Hard
(2) Soft
(3) Turbid
(4) Lenticels
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyBark formed towards the end of the season is called ________ bark.
(1) Soft
(2) Hard
(3) Turbid
(4) Rigid
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe exchange of gases between the outer atmosphere and internal tissue of stem is through ___________.
(1) Lenticels
(2) Legume
(3) Epidermis
(4) Cambium ring
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIn dicot root the vascular cambium is completely _________ in origin.
(1) Primary
(2) Secondary
(3) Tertiary
(4) Quaternary
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich one yields fibres?
(1) Coconut
(2) Oak
(3) Teak
(4) Sisso
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyDeath of protoplasm is a pre-requisite for vital function like
(1) Transport of sap
(2) Transport of food
(3) Absorption of water
(4) Gaseous exchange
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology