Read different components from (i) to (iv) in list given below and tell correct order of components

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6.Anatomy of Flowering Plants

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Read the different components from $(i)$ to $(iv)$ in the list given below and tell the correct order of the components with reference to their arrangement from outer side to inner side in a woody dicot stem.

$(i)$ Secondary cortex $(ii)$ Wood $(iii)$ Secondary phloem $(iv)$ Phellem The correct order is

$(iv), (i), (iii), (ii)$

$(iv), (iii), (i), (ii)$

$(iii), (iv), (ii), (i)$

$(i), (ii), (iv), (iii).$

(NEET-2015)

Solution

(a) : In a woody dicot stem, phellem (cork) forms the outermost layer followed by phellogen and then secondary cortex (phelloderm). Secondary phloem forms a narrow circle on the outer side of vascular cambium whereas secondary xylem occurs on the inner side of vascular cambium.

Standard 11

Biology

Identify the plant parts whose transverse section shows a clear and prominent pith.

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What part of the plant would show the following :

$(a)$ Radial vascular bundle

$(b)$ Polyarch xylem

$(c)$ Well developed pith

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Match the following

Column $-I$ Column $-II$

$(a)$ Dicot leaf $(p)$ Polyarch

$(b)$ Dicot stem $(q)$ Pallisade and spongy mesophy $II$

$(c)$ Monocot root $(r)$ Endarch

$(d)$ Monocot leaf $(s)$ Bulli form Cell

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Abundant pith is characteristic of

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Assertion : Higher plants have meristematic regions for indefinite growth.
Reason : Higher plants have root and shoot apices.

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(AIIMS-1999)

Column $-I$	Column $-II$
$(a)$ Dicot leaf	$(p)$ Polyarch
$(b)$ Dicot stem	$(q)$ Pallisade and spongy mesophy $II$
$(c)$ Monocot root	$(r)$ Endarch
$(d)$ Monocot leaf	$(s)$ Bulli form Cell

Solution

Similar Questions

Identify the plant parts whose transverse section shows a clear and prominent pith.

What part of the plant would show the following : $(a)$ Radial vascular bundle $(b)$ Polyarch xylem $(c)$ Well developed pith

Match the following Column $-I$ Column $-II$ $(a)$ Dicot leaf $(p)$ Polyarch $(b)$ Dicot stem $(q)$ Pallisade and spongy mesophy $II$ $(c)$ Monocot root $(r)$ Endarch $(d)$ Monocot leaf $(s)$ Bulli form Cell

Abundant pith is characteristic of

Assertion : Higher plants have meristematic regions for indefinite growth. Reason : Higher plants have root and shoot apices.

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What part of the plant would show the following :

$(a)$ Radial vascular bundle

$(b)$ Polyarch xylem

$(c)$ Well developed pith

Match the following

Column $-I$ Column $-II$

$(a)$ Dicot leaf $(p)$ Polyarch

$(b)$ Dicot stem $(q)$ Pallisade and spongy mesophy $II$

$(c)$ Monocot root $(r)$ Endarch

$(d)$ Monocot leaf $(s)$ Bulli form Cell

Assertion : Higher plants have meristematic regions for indefinite growth.
Reason : Higher plants have root and shoot apices.