Class 11

Numerous objects in life are categorised, that is, assigned to categories or groups according to their qualities. Naturally, biology, as the study of life and living things, has a classification system. Classification of living things enables us to classify and group organisms based on their properties in a variety of ways. Biological classification  Biological classification […]

Introduction  The classification of Monera forms a part of the taxonomic system of hierarchy. This taxonomic classification has seen several modifications over the years. This system began with the two kingdom classification given by Linnaeus in 1735. The last mega taxonomic hierarchy that used the classification of Monera was the five-kingdom classification given by Whittaker

A lichen, rather than being a single creature, is a symbiosis of various species such as fungus and cyanobacteria or algae. Cyanobacteria are commonly referred to as blue-green algae, despite the fact that they are not algae. Chlorophyll is found in photobiont, which is a non-fungal component. One photobiont and one mycobiont are common lichen

It is quite astounding to discover that microorganisms are the only living organisms who have a complete domain in the evolving system of living life forms. They are the life forms that may be found everywhere in the living landscape. We can find tiny creatures in a variety of environments. Due to the fact that

Chromosomes are thread-like or rod-shaped structures in biological organisms that carry DNA information. The two strands of a chromosome that are identical to each other are known as chromatids. Cell division is aided by chromatids, which allow cells to duplicate and replicate one other. A chromosome is a piece of genetic material that carries all

Characteristics of Kingdom Protista All single-celled eukaryotes are classified as Protista. On the other hand, the kingdom’s borders are not clearly defined. The phylum Protista is primarily an aquatic one. Plants, animals, and fungi are all connected to this kingdom. Like other eukaryotes, the protist cell body has a very well nucleus as well as

A centrosome is an organelle that usually consists of two cylindrical structures. These structures are known as centrioles. Both the centrioles in a centrosome lie perpendicular to each other and form an arrangement like a cartwheel concerning each other. An indeterminate pericentriolar material surrounds centrioles in the centrosome. The two centrioles found on the centrosome

A centromere is a constricted section of a chromosome that divides it into two arms (p) and a long arm (q). The chromosomes first replicate during cell division so that each daughter cell has a complete set of chromosomes. The chromosome is made up of two identical structures termed sister chromatids, which are joined at

The cytoskeleton is a redesigned fibrous proteinaceous framework found in the cytoplasm of the cell. It provides mechanical support to cells. It also assists the cell in maintaining its own form and movement. Microtubules are also called tubulin polymers and are larger than the other two. Their diameter is around 25 nanometers. The main function

Animal cells contain an organelle called centriole which is found in pairs in the cell. They are also present in lower plants but are absent in higher plants. They are located near the nucleus and cannot be seen unless the cell is dividing. They divide themselves during cell division. Its structure is simple, and it