Tag: living world and classification of microbes

Ascus (mother cell) in penicillium is related to its sexual development. Basidium also forms in sexual reproduction of Agaricus during karyogamy. Eglena is single cellular eukaryotes belonging to kingdom Protista. Spirula is dietary supplements which are biomass of cyanobacteria or blue-green algae. Sponges are the most primitive organisms of kingdom Animalia.

The correct answer is E.

Encephalitis is acute inflammation (swelling up) of the brain resulting either from a viral infection or when the body's own immune system mistakenly attacks brain tissue. The most common cause is a viral infection. Encephalitis occurs in 1 in every 1,000 cases of measles. Encephalitis generally begins with fever and headache. The symptoms rapidly worsen and there may be seizures (fits), confusion, drowsiness and loss of consciousness and even coma. It is transmitted to humans through the bite of infected Culex species mosquitoes, particularly Culex tritaeniorhynchus.

Tetanus and typhoid are bacterial diseases caused by bacteria. Syphilis is a sexually transmitted infection caused by the spirochete bacterium Treponema pallidum subspecies pallidum. Yellow fever is caused by a flavivirus and transmitted by the bite of mosquitoes, usually the Aedes aegypti mosquito, which had become infected by biting an infected human. Hence, the correct answer is option A.

Yellow fever is an acute viral fever caused by a flavivirus. It is transmitted by the bite of mosquitoes, usually the Aedes aegypti mosquito. It is characterized by a headache, chills, loss of appetite, nausea etc. In severe cases, yellow fever causes a high fever, bleeding into the skin and the death of cells in the liver and kidneys. Liver damage results in severe jaundice i.e., yellowing of the skin; hence the name "yellow fever". Thus, the correct answer is option A.

• The common cold is a viral disease, which is caused by a viral infection of the upper respiratory tract (nose and throat), whereas, pneumonia is an inflammatory condition of the lung affecting primarily the microscopic air sacs known as alveoli. 
  
  
• It is usually caused by infection with viruses or bacteria and less commonly other microorganisms. Typical symptoms include a cough, chest pain, fever, and difficulty breathing.
  
  Hence, Option D is correct.

• Animalcule is an older term for a microscopic animal or protozoan.
• Rotifers are microscopic and free-living microscopic or near-microscopic pseudocoelomate animals belonging to the phylum Rotifera.
• 90% of rotifers inhabit freshwater habitat but some live in brackish water and few in the ocean.
• Rotifers are called wheel animalcules because their corona is composed of several ciliated tufts around the mouth that in motion resemble a wheel.
• Hence wheel animalcules are Rotifers.
• So, the correct answer is 'Rotifers'.

Amoeba, unicellular protozoan, outerly covered by plasma membrane, cell wall is not present. So amoeba is purely animal cell.

So, the statement is false.

Kingdom Protista is a group in of eukaryotic organisms which have a true nucleus, they are usually unicellular and the cells of these organisms contain nucleus which is bound to the organelle,  algae are one of the classifications of protista which are photosynthetic organisms that are mostly found in freshwater sources or marine lakes. Protists are heterotrophic organism & on the other hand, has to acquire nutrition from other organisms such as plants or animals to survive.

Haemophilus influenzae is a small, pleomorphic bacteria which is the most often cause of pneumonia, a lung infection.
Therefore, the correct answer is option B.