SureDen
Morphology of Flowering Plants
Stem:
Bears branches, leaves, flowers, and fruits
Conducts water a
Forms of Stem:
Strong Stem:
The following terms are important in relation to strong stems.
Underground modifications of stem
Tuber :
It is the swollen tip of the underground branch or stolon. The ti
Inflorescence
Leaves :
A leaf is a dissimilar, green, flat, expended lateral outgrowth of stem or its branches on a node.
Each leaf consists
Modification of tap root:-
Fleshy roots:-
Fusiform: In these roots the middle portion becomes t
Type of Roots:-
Root are divided into two types:
Tap roots:- Tap root or primary root develops
Placentation
Types of placentation
Marginal : In the monocarpellary (Pea) or each carpel of mul
Seeds and its types
Seeds
The fertilized ovule forms seed. The study of seed of called Spermology .The seeds are of two
Parts of a Root:-
A root consists of four zones or regions from the lower most part to the upper most part. These are:
Root cap
Aestivation
The mode of arrangement of plants (also sepals) in a flower bub with respect to members of the same whorl is known as aestivati
Types of Angiosperms on the basis of life span:-
Annuals:- Such plants which complete their life cycle within one season. e.g. mus
Fixation of anthers:
It is the attachment of the filament to the anthers.
The anthers is said to be adnate
Types of Leaves
Depending upon the indentation or incision of lamina, the leaves are of two t
Fruits and seeds
Fruit and Seeds :
The fruit is a ripened ovary mostly developed after fertilization.
Modifications of leaf
Leaves with different functions or modification of leaves:
They can
Primary function of leaf
Primary function of leaves:
Photosynthesis: The principal functi
Dispersal of fruit and Seeds
It takes place by the following methods :
Dispersal by w
Defense Mechanisms in Plants
Thoms &
Calyx:
It is the outermost whorl of the flower. Sepals of flower are usually leaf like gree
Perianth
When the two outer accessory whorls are not differentiated into sepals and petals and all the floral leaves are alike in these whorls or
The function of flower are :
It is the part of a plant which helps in sexual reproduction.
It bears male sex organs i.e. stame
Stem :
It can be defined as the ascending part of shoot axis which is negative geotropic, positively phototropic and develops from plumule
Bud:-
A bud is a condensed young shoot with underdeveloped leaves. Cabbage is the largest bud.
There are three types of buds- (i
Flower:
The flower is a highly modified shoot meant essentially for the sexual reproduction of the plant.
Parts of a typical flo
Relative Position of floral parts on the thalamus:
The arrangement of floral leayes on the thalamus varies and is of the following types:
Corolla:
It is second floral whorl present inner to calyx and composed of petals. The petals are usually brightly coloured due to the presence of p
Androecium
Androecium is the third essential whorl which consists of stamens or male reproductive part of a flower. Each stamen is composed o
Gynoecium:
The gynoecium or pisit is the fourth essential whorl of female reproductive part of the flower and may be composed of one or
Style:-
The style is the slender projection of the ovary which is meant for raising the stigma on which pollen grains are deposited during p
Coming Soon...