Biology Blogs For Class11th, 12th and NEET

      Anatomy Of Dicot Stems In Plants  Good Morning Students !  Do you know what is anatomy ?  What is Anatomy? Anatomy is the study of the internal structure of living organisms. When we talk about anatomy in plants, we're referring to how the different parts of the plant's body are arranged and structured. Today, we're going to focus on the anatomy of a dicot stem in plants. 1. Epidermis The epidermis is the outermost protective layer of the stem. It's the first line of defense against external factors. The epidermis is covered by a thin layer of cuticle , which helps in reducing water loss. It may also have a few stomata , which are tiny pores responsible for gas exchange. 2. Hypodermis Just beneath the epidermis lies the hypodermis . This layer consists of collenchymatous cells , which provide mechanical strength to the young stem. These cells are thickened at the corners, making the stem rigid and helping it to stand upright. 3. Cortex Next, we mov...

                           Mitochondria Structure                                             Mitochondria are filamentous or granular cytoplasmic organelles called "the powerhouse of the cell" . Under light microscope mitochondria are seen in the form of thread like structure , therefore they are named as Mitochondria .  Mitochondria was first observed by Kolliker  in 1880 & later Fleming in 1882. The term Mitochondria was given by Benda (1897).  Distribution - Mitochondria are uniformly distributed in the cytoplasm of all eukaryotic cells. They are absent in the prokaryotic cells.  Shape & Size - Saucer & Oval are two common shapes of mitochondria are found in cells. The size of mitochondria is 1-10 0.5 micrometers (µm).  Structure -  Mitochondria is double mem...