Question

explain the parts of a leaf​

Answer 1

The leaf blade and and the petiole...

Answer 2

$\huge\star\:\:{\orange{\underline{\purple{\mathcal{Explanation}}}}}$

$\underline\text{Leaf\:\:is\:\:thin,\:\:flat\:\:and\:\:green\:\:lateral\:\:structure\:\:that\:\:has\:\:following\:\:parts:-}$

$\:\sf\underline\orange{Leaf\:base}\:$ :- leaf comes out from stem or branc from the point on stem or branch from where leaf grows is called leaf - base.

$\:\sf\underline\green{Petiole\:and\:lamina}\:$ :- petiole is commonly called leaf stalk and lamina is commonly called the leaf blade, the green flattened and broad part of leaf is called Lamina.

There runs a main vien in the centre of the lamina it is called the "midrib" from midrib a large number of veins are formed . The design formed by viens is called leaf venation which is of two types :-

$\:\sf\underline\blue{Reticulate\:venation}\:$ In this type of venation midrib runs from the base of the leaf to apex and veins from a network on both the sides of midrib.

Venation is reticulate in the following leaves :-

• mango
• people
• banyan
• guava
• neem
• tulsi
• rose
• pulses and
• coriander

$\:\sf\underline\red{Parallel\:venation}\:$ In this type of venation several Beans from the base of the leaf run parallel to each other .

Venation is parallel in following Leaves :-

• wheat
• sugarcane
• barley and
• grass