Biological Classification - NEET - Vr Education

Methanogens are bacteria that are utilized in gober gas plants. They are responsible for the production of methane gas through the process of anaerobic digestion. Methanogens are able to break down organic matter in the absence of oxygen, converting it into methane and carbon dioxide. This methane gas can then be used as a source of energy in gober gas plants.

Cyanobacteria are often referred to as blue-green algae because they possess characteristics of both bacteria and algae. They are prokaryotic organisms that can perform photosynthesis, similar to algae. However, they lack a true nucleus and other membrane-bound organelles, which are characteristics of bacteria. The term "blue-green" refers to their pigmentation, as they often have a bluish or greenish color due to the presence of pigments such as chlorophyll.

Phylogenetic classification is based on common evolutionary descent. This means that organisms are grouped together based on their shared ancestry and evolutionary history. It is believed that species that share a more recent common ancestor will have more similarities in their genetic makeup and physical characteristics. By studying these similarities, scientists can determine the relationships and evolutionary connections between different species. This classification system helps to understand the evolutionary relationships and patterns of biodiversity on Earth.

Single celled eukaryotes are included in the Protista kingdom. This kingdom consists of various organisms that are eukaryotic and mostly unicellular. They exhibit a wide range of characteristics and can be found in various habitats such as water, soil, and even within other organisms. Examples of single celled eukaryotes in the Protista kingdom include amoebas, paramecia, and euglenas.

Tse-Tse flies are the vectors for sleeping sickness. Sleeping sickness, also known as African trypanosomiasis, is caused by a parasite called Trypanosoma brucei. Tse-Tse flies become infected with the parasite when they bite an infected human or animal. The parasites multiply in the fly's gut and salivary glands. When the infected fly bites another human or animal, it transmits the parasite through its saliva, causing sleeping sickness. Tse-Tse flies are mainly found in sub-Saharan Africa and are responsible for the transmission of this disease to humans and animals in the region.

Flagella are long, whip-like appendages that protrude from the surface of bacteria. They are responsible for the movement of bacteria. The rotation of the flagella propels the bacteria forward, allowing them to move towards or away from certain stimuli. Fimbriae, pili, and cilia are also structures found in bacteria, but they serve different functions such as attachment to surfaces or the transfer of genetic material. Therefore, flagella are specifically responsible for the motility of bacteria.

Anabaena is a type of cyanobacteria that lacks a true nucleus. Cyanobacteria are prokaryotic organisms, meaning they do not have a membrane-bound nucleus like eukaryotic organisms. Instead, their genetic material is located in a region called the nucleoid, which is not enclosed by a membrane. This allows for efficient gene expression and adaptation to various environments.

Enzymes are absent in viruses because viruses are not considered living organisms. Unlike bacteria, algae, and fungi, viruses do not have cells and cannot carry out metabolic processes on their own. They rely on host cells to replicate and carry out their life cycle. Therefore, they do not possess enzymes, which are essential for catalyzing biochemical reactions and metabolic processes in living organisms.

Nitrogen fixer soil organisms belong to bacteria. Bacteria have the ability to convert atmospheric nitrogen into a usable form, such as ammonia. This process, known as nitrogen fixation, is crucial for the nitrogen cycle and the availability of nitrogen for plant growth. While other organisms like mosses, green algae, and soil fungi play important roles in soil ecosystems, bacteria are specifically known for their nitrogen-fixing abilities.

Lichens are symbiotic organisms composed of a fungus (ascomycetes) and a photosynthetic partner, usually blue-green algae (cyanobacteria). The algae provide the lichen with food through photosynthesis, while the fungus provides a protective environment and absorbs nutrients from the surroundings. This mutualistic relationship allows lichens to survive in harsh environments and play important roles in soil formation and ecological processes. Therefore, the correct answer is "Blue-green algae and ascomycetes".

Glycogen is the correct answer because it is the main storage form of glucose in fungi. Similar to animals, fungi store excess glucose as glycogen for energy reserves. This polysaccharide is stored in the cytoplasm and can be broken down into glucose when needed for energy production. Starch is the main storage carbohydrate in plants, while sucrose is a disaccharide composed of glucose and fructose. Glucose is a monosaccharide and is not typically stored as a reserve in fungi.

Archaebacteria differ from eubacteria in their cell membrane structure. Archaebacteria have a unique cell membrane composition that is different from eubacteria. This difference in cell membrane allows archaebacteria to survive in extreme environments such as hot springs, salt flats, and deep-sea hydrothermal vents. Eubacteria, on the other hand, have a cell membrane structure similar to other bacteria and can be found in a wide range of environments.

Chromatophores are specialized structures found in photosynthetic bacteria that contain pigments. These pigments are responsible for capturing light energy and converting it into chemical energy through the process of photosynthesis. Unlike other types of plastids like leucoplasts, chloroplasts, and chromoplasts, chromatophores are specifically adapted for photosynthesis and are able to adjust their pigmentation to optimize light absorption. Therefore, the presence of pigments in chromatophores is a characteristic feature of photosynthetic bacteria.

Cauliflower mosaic virus contains ds DNA, which stands for double-stranded DNA. This means that the genetic material of the virus consists of two complementary strands of DNA that are joined together. This is different from ss DNA, which stands for single-stranded DNA, where there is only one strand of DNA present. Similarly, ss RNA refers to single-stranded RNA, and ds RNA refers to double-stranded RNA. However, in the case of cauliflower mosaic virus, the correct answer is ds DNA.

A natural system of classification is based on the natural relationships and evolutionary history of organisms. It considers a large number of traits and characteristics to group organisms together. This approach aims to reflect the true relationships between species and their shared ancestry. It takes into account various factors such as morphology, genetics, behavior, and ecological roles. By considering a wide range of traits, a natural system provides a more comprehensive understanding of the relationships between different organisms.