DEFINITIONS AND KEY POINTS OF MORPHOLOGY AND PHYTOGRAPH

Root

The cylindrical plant organ without

chlorophyll. growing towards the gravity is  called root.

Tap root

The root directly raised from the seed is called tap root.

Fibrous roots

tap

The long and slender tap root with Slender branches is called fibrous tap root.

Tuberous molts

tap

The thick or swollen tap roots with reserve food arc known as tuberous tap roots. 

Stem

The portion of the primary axis of plant which develops from which plumulc is called main stem.

Annuals

The plants which live only for single grossing season are called annual&

Biennials

The plants which live for two growing seasons are called biennials.

Herb

An annual green small sized plant is called herb. .

Shrub

The woody green plant whose main stem cannot he distinguished from its branches is called shrub.

Tree

It is perennial green woody plant with a distinct upright (straight) stem of 6 led or inote is called tree.

Trailer

In these plants. the stems spread out or trail on the ground. Their stein is called prostate stem.

Rhizome

The elongated, horizontal. thick and fleshy underground stein is called rhizome.

Corm

The thick solid. rounded. condensed underground stem with few internodesis
called corm.

Bulb

A spec la Ii/cu in tic h reduced short underground stern composed of broadly

conical disc is called bulb.

 

Imbricate bulb

The bulb in which leaves overlap each other at their margins is called imbricate bulb.

Tunicated bulb

The bulb in which leaves surround each other is called tunicated bulb.

Stem tuber


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The smollen underground tips of branches of vertical axis which store food and use for vegetative propagation is called stem tuber. .

Phylloclades

Phylloclades are composed of more than one internode. .

Cladodes

cladodes are composed of single internode.

Leaves

Leaves are gredi flat structures borne on the stem or on th.: britches.

Bracts

The special leaf in the axil of which flower

arises is called brad. .

Bracteoles

One or two lea present on the stalk of flower are called bra. teoles.

Stipules

pair of outgrowth developed at the base of the petiole of a leaf are called stipules

Stiples

Phyllotaxis

The arrment of the leaves on the stem is called Phyllotaxis

Venation

The arrment of the veins  on the lemina  is called Venation

Reticulate venation

The Venation in which smaller neins arise from the midrib and form network is called reticulate venation.

Parallel venation

In this type, the veins run parallel or nearly parallel to each other and are connected by smaller veins.

Compound leaf

a leaf consisting of several or many distinct parts (leaflets) joined to a single stem.

Flower

the finest individuals out of a number of people or things.

Bract

A special leaf in the axil of which flower borne is called bract.

Thalamus

The terminal swollen part of the flower, which bears sepals. petals, stamens and carpels, is called thalamus.

Nectaries

The fleshy or glandular outgrowths borne in flowers are called nectaries.

Corona

In some flower’s, small outgrowths or ligules are developed in a circle on the corolla. Such outgrowths are called corona

Placentation

The cushion like ridges inside the ovary on which ovules are attached is called placenta. The arrangement of placentas in the ovary is called placentation.

Floral diagram

The diagram representation of the

arrangement of floral leaves on the mother axis of flower is called floral diagram.

Floral formula

The short symbolic representation of the

various parts of flower is called floral
formula.

 

 

 

 

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