Skip to main content

Stem

The study of varied external options of the plants is understood as a plant morphology. 
The angiosperm is characterized by presence of roots, stems, leaves, flowers, and fruits. 
These are the most characteristics of angiosperms. 
The stem is the ascending part of the axis bearing branches, leaves, flower and fruits. 
It develops from the down feather of the embryo of a germinating seed. 
The stem bears nodes and internodes. 
The regions of the stem wherever leaves are born are known as nodes, whereas, internodes are the parts between 2 nodes. 
The main operate of the stem is spreading out branches, bearing leaves, flowers, and fruits. 
Modification of stem 
1. Rhizome- 
Rhizome are non-inexperienced with distinct nodes and internodes. 
These are brown in color. 
Example- Ginger 
2. Bulb-
The bulb might tunicated. 
A sheath of dry membranes scale leaves protected the chordate bulb. 
Example- Onion 
3. Tuber- 
The tuber could be a fleshy a part of the plant that stores food. 
Example- Potato 
4. Stolen- They grow via aircraft for a few times and so bent downward to the touch the bottom. 
Taken arise from the bottom of stem.
 Example- Jasmin 
5. Climber- 
The stem gets changed into a thread like to defoliate structure is known as tendrils. 
These are meant for rise. 
Example- Passiflora

Comments

Post a Comment

Popular posts from this blog

flower

In this page- - Morphology  - Flowers  - Hypogynous flower Perigynous flower Epigynous flower Estivation Androecium Gynoecium Placentation Morphology  The study of varied external options of the plants is thought as plant morphology.  The Angiosperms are characterized by presence of roots, stems, leaves, flowers, and fruits.  These are the most important characteristics of angiosperms.  Flower  The flower It is the fruitful unit within the angiosperms .  It is meant for reproduction.  A typical flower has four completely different types of whorls organized in turn on the swollen finish of the stalk or pedicle, referred to a as neural structure or receptacle or thalamus .  These are curl, corolla, androeciun, gynoecium.  Calyx and corolla are accent organs.  Androecium and gametoecium and fruitful organs.  Bisexual -When a flower has each gametoecium and gametoecium.  Uni sexual- A flower having eit...
7 comments
Read more

Name of 100 living organisms in the world

  Name of 100 living organisms in the world There are many living organisms in the world. They are Human, tiger, bear, lion, dog, cat, horse, pig, rat, garden lizards, house lizard, Snell, hippopotamus, mango tree, coconut tree, banyan tree, banana tree, mushrooms, polar bear, yak, cow, goat, sheep, wolf, jacket, fox, tortoise, cobra, anaconda, crocodile, pegion, peacock, hen, parrot, bacteria, algae, ant, spider etc. Basis characteristics of living organism Following  basic characteristics of living organisms  distinguish them from non-living. These are the basic  19 characters of living organisms 1. Individuality:  Every  organism  exists as a single unit and has its own individuality. It can't be separated into completely different components for its survival.  2. Form and size:  Every  organism  incorporates a definite form and size. A non-living object will have any form.  3. Chemical organization:   Organisms  a...
1 comment
Read more

Function of the hormones of adenohypophysis

Function of hormones of  adenohypophysis   Adenohypophysis is the real glandular part of the pituitary gland. The cells adenohypophysis secreted several hormones.  The hormones of adenohypophysis are 1. Somatotrophic hormone(STH): Growth hormone is secreted by the acidophill cells of the adenohypophysis.  It is polypeptide in nature consisting of large branches.  The molecular weight in human beings is 21500. The hormone regulates the growth of the body is thus it is necessarily concerned with the growth of skeleton, growth of muscle and growth of other organs.  Function - It stimulates the growth of skeleton in general by promoting ossification.  Hyper activity of gland in the young increases the growth of skeleton and this condition is known as gigantism.  Hypofunction of gland retrads skeletal growth and produce dwarfism.  The hormones promotes protein anabolism.  The hormone elevates the blood glucose level by stimulating glycog...
Post a Comment
Read more