Define the following terms:
$(i)$ Endarch xylem
$(ii)$ Exarch xylem
$(i)$ Endarch xylem
$(ii)$ Exarch xylem
(N/A) $(i)$ Endarch xylem: In this type of development,the protoxylem lies towards the centre (pith) and the metaxylem lies towards the periphery of the organ. This is a characteristic feature of stems in angiosperms.
$(ii)$ Exarch xylem: In this type of development,the protoxylem lies towards the periphery and the metaxylem lies towards the centre. This is a characteristic feature of roots in angiosperms.
$(ii)$ Exarch xylem: In this type of development,the protoxylem lies towards the periphery and the metaxylem lies towards the centre. This is a characteristic feature of roots in angiosperms.
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Similar Questions
Identify the figure:
Medium
View SolutionPolyarch condition is seen in
Medium
View SolutionIdentify the organ from the given internal structure.
$(i)$ Unicellular hair
$(ii)$ Endodermis with passage cells
$(iii)$ Pith$-$small$/$inconspicuous
$(iv)$ Radial vascular bundle
$(v)$ Xylem exarch
$(vi)$ $2-4$ xylem and phloem
The above description refers to which of the following?
$(ii)$ Endodermis with passage cells
$(iii)$ Pith$-$small$/$inconspicuous
$(iv)$ Radial vascular bundle
$(v)$ Xylem exarch
$(vi)$ $2-4$ xylem and phloem
The above description refers to which of the following?
Medium
View SolutionComplete the following analogy-type questions:
$(i)$ Innermost layer of cortex : Endodermis :: Layer just inside the endodermis : ........
$(ii)$ Adaxial epidermis in dorsiventral leaf : Palisade parenchyma :: Abaxial epidermis : ...........
$(i)$ Innermost layer of cortex : Endodermis :: Layer just inside the endodermis : ........
$(ii)$ Adaxial epidermis in dorsiventral leaf : Palisade parenchyma :: Abaxial epidermis : ...........
Medium
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