Definitions / Explanation : (i) Conjoint vascular bundles (ii) Secondary growth

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6.Anatomy of Flowering Plants

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Definitions / Explanation :

$(i)$ Conjoint vascular bundles

$(ii)$ Secondary growth

Option A

Option B

Option C

Option D

Solution

$(i)$ The vascular bundle in which xylem tissue and phloem tissue are arranged together, such a vascular bundle is called conjoint vascular bundle.

$(ii)$ In most of the dicot plants, after completion of primary growth due to formation of secondary tissue, the increase in girth is called secondary growth.

Standard 11

Biology

The transverse section of a plant material shows the following anatomical features, $(a)$ the vascular bundles are conjoint, scattered and surrounded by clerenchymatous undle sheaths $(b)$ phloem parenchyma is absent. What will you identify it as?

easy

Match the following:

Column $- I$ Column $- II$

$(1)$ Monocot stem $(a)$ Bulliform cells

$(2)$ Monocot root $(b)$ Casperian strips

$(3)$ monocot leaf $(c)$ Polyarch xylem bundles

$(d)$ Vascular bundles conjoint and closed

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Cambium causes growth in

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Assertion : In angiosperms, the conduction of water is more efficient because their xylem has vessels.
Reason : Conduction of water by vessel elements is an active process with energy supplied by xylem parenchyma rich in mitochondria

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(AIIMS-2006)

Vascular tissues in flowering plants develop from

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(AIPMT-2008)

Column $- I$	Column $- II$
$(1)$ Monocot stem	$(a)$ Bulliform cells
$(2)$ Monocot root	$(b)$ Casperian strips
$(3)$ monocot leaf	$(c)$ Polyarch xylem bundles
	$(d)$ Vascular bundles conjoint and closed

Definitions / Explanation : $(i)$ Conjoint vascular bundles $(ii)$ Secondary growth

Solution

Similar Questions

The transverse section of a plant material shows the following anatomical features, $(a)$ the vascular bundles are conjoint, scattered and surrounded by clerenchymatous undle sheaths $(b)$ phloem parenchyma is absent. What will you identify it as?

Match the following: Column $- I$ Column $- II$ $(1)$ Monocot stem $(a)$ Bulliform cells $(2)$ Monocot root $(b)$ Casperian strips $(3)$ monocot leaf $(c)$ Polyarch xylem bundles $(d)$ Vascular bundles conjoint and closed

Cambium causes growth in

Assertion : In angiosperms, the conduction of water is more efficient because their xylem has vessels. Reason : Conduction of water by vessel elements is an active process with energy supplied by xylem parenchyma rich in mitochondria

Vascular tissues in flowering plants develop from

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Definitions / Explanation :

$(i)$ Conjoint vascular bundles

$(ii)$ Secondary growth

Match the following:

Column $- I$ Column $- II$

$(1)$ Monocot stem $(a)$ Bulliform cells

$(2)$ Monocot root $(b)$ Casperian strips

$(3)$ monocot leaf $(c)$ Polyarch xylem bundles

$(d)$ Vascular bundles conjoint and closed

Assertion : In angiosperms, the conduction of water is more efficient because their xylem has vessels.
Reason : Conduction of water by vessel elements is an active process with energy supplied by xylem parenchyma rich in mitochondria