Match the following columns:Column-IColumn-II | vedclass

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(D) The correct matching is as follows:$(a)$ Sporopollenin is the most resistant organic material known,which forms the outer layer of pollen grain ca

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$a-2, b-3, c-4, d-1$

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(D) The correct matching is as follows:$(a)$ Sporopollenin is the most resistant organic material known,which forms the outer layer of pollen grain called the Exine $(a-2)$.$(b)$ The inner wall of the pollen grain is called the Intine,which is thin and made up of cellulose and pectin $(b-3)$.$(c)$ The vegetative cell is bigger,has abundant food reserve,and a large irregularly shaped nucleus $(c-4)$.$(d)$ The generative cell is small and floats in the cytoplasm of the vegetative cell. It is spindle-shaped with dense cytoplasm and a nucleus $(d-1)$.Therefore,the correct sequence is $a-2, b-3, c-4, d-1$.

Column-$I$	Column-$II$
$(a)$ Sporopollenin	$(1)$ Spindle-shaped nucleus
$(b)$ Cellulose,Pectin	$(2)$ Exine
$(c)$ Vegetative cell	$(3)$ Intine
$(d)$ Generative cell	$(4)$ Irregularly shaped nucleus

Match the following columns:
Column-$I$ Column-$II$
$(a)$ Sporopollenin $(1)$ Spindle-shaped nucleus
$(b)$ Cellulose,Pectin $(2)$ Exine
$(c)$ Vegetative cell $(3)$ Intine
$(d)$ Generative cell $(4)$ Irregularly shaped nucleus

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Match the following columns:Column-$I$Column-$II$$(a)$ Sporopollenin$(1)$ Spindle-shaped nucleus$(b)$ Cellulose,Pectin$(2)$ Exine$(c)$ Vegetative cell$(3)$ Intine$(d)$ Generative cell$(4)$ Irregularly shaped nucleus