iman adalah mutiara...

LOVE ALLAH...=D

“Tiga perkara yang barangsiapa terdapat (ketiga-tiga perkara itu) padanya nescaya dia memperolehi kemanisan iman : (iaitu) Allah dan Rasul-Nya adalah lebih dia cintai daripada selainnya (Allah dan Rasul), dan dia mencintai seseorang semata-mata kerana Allah, dan dia benci untuk kembali kepada kekufuran (maksiat) sebagaimana dia benci dilemparkan ke dalam api”. (Hadis Sahih Riwayat Bukhari dan Muslim dan lain-lain)

Manisnya coklat berkualiti itu menggembirakan. Manisnya, lazatnya makanan kegemaran itu menyeronokkan. Manisnya senyuman dan wajah itu menenangkan. Manisnya tutur bahasa itu membahagiakan.

Namun halawatul (kemanisan) iman itu bagaimana? Ianya suatu rasa yang lebih hebat.

Kemanisan iman, satu anugerah daripada Allah.

Kemanisan iman, rasa nikmat ketika melakukan ketaatan kepada Allah.

Kemanisan iman itu adalah kegembiraan hati, tenangnya jiwa dan bahagianya hidup.

من لم يذوق لا يفهم

Siapa yang belum merasa, tidak memahami.

Halawatul iman itu tidak dapat dirasai melainkan oleh mereka yang sempurna iman dan benar-benar mencintai Allah s.w.t dan Rasul-Nya

Kemanisan iman, adalah sesuatu yang kita perlu berusaha sedaya-upaya untuk merasainya. Kita taat dan mencintai Allah dan Rasul-Nya, demi kemanisan Iman.

inDAHNYA ciPtAAN ALLAH~

          

Plant Histology

Introduction

     A tissue is an aggregation of cells that have a common origin and structure, and perform similar functions. Tissues are meant for meeting the physical and physiological needs of the plant body.

Meristematic Tissue (Meristem)

     The meristematic tissue is formed exclusively by undifferentiated or embryonic cells. These cells, known as meristematic cells, are responsible for bringing about growth of the plant body due to their capacity to undergo continuous mitotic divisions.

Permanent Tissues (Mature Tissues)

     The permanent tissues are formed by the differentiated cells, which become specialised to perform specific functions like protection, support, storage and conduction. The permanent tissues always differentiate from the meristematic cells, during the process of growth.

Simple Permanent Tissues

     These tissues are described as homogenous, since the constituent cells are identical in their structure.

Parenchyma

     It is the main tissue in the plant body, occurring in almost all regions. It is particularly abundant in the root and stem. It is the least specialised among the permanent tissues. The cells of the tissues are called parenchyma cells. These cells are usually spherical or oval in shape. Sometimes the cells may be elongated. Very rarely, the cells become irregular in shape. They are usually loosely arranged with prominent intercellular spaces. In certain regions like epidermis, the cells become compactly arranged and hence, intercellular spaces are absent.

Collenchyma

     It is a type of simple permanent tissue, which is mainly meant for providing mechanical support to the shoot system of a plant. Collenchyma is completely absent in the root.

Sclerenchyma

     It is a type of simple permanent tissue mainly meant for providing mechanical support and protection to different parts of the plant body. Hence, sclerenchyma occurs in all the parts of the plant body, including the fruit and seed.

Xylem

     It is a complex permanent tissue, which is specialized for the conduction of water and mineral substances in the plant body. Xylem is a heterogenous tissue made up of four different types of cellular elements.

Phloem

     Phloem is a complex permanent tissue, which is specialized for the conduction of food and other organic substances. Phloem is also a heterogenous tissue.