Write the precise function of
$(a)$ Sieve tube
$(b)$ Interfascicular cambium
$(c)$ Collenchyma
$(d)$ Aerenchyma
$(a)$ Sieve tube : It is located in phloem tissue.It's function is to transport synthesized food into whole plant body.
$(b)$ Interfascicular cambium : It's function is to make secondary growth in dicot stem and root. It is a type of secondary meristematic tissue located between vascular bundles.
$(c)$ Collenchyma : It's function is to provide support to growing of tender parts of the plants. Angular thickening is seen at the corners of cells.
$(d)$ Aerenchyma: It provides buyoncy in aquatic plants.It is a special type of parenchyma. That contains large air spaces.
Definitions / Explanation :
$(i)$ Conjoint vascular bundles
$(ii)$ Secondary growth
In stems, the protoxylem lies towards the _____________ and the metaxylem lies towards the ____________ of the organ
Axillary bud and terminal bud are derived from the activity of
$(i)$ The ...$a$... help in maintaining the pressure gradient in the sieve tubes
$(ii)$ Stomata regulate the process of ....$b$..... and gaseous exchange
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 |