Tag: biology

Pseudopodia (false feet) are extensions of the cytoplasm used by amoeboid protozoa for both locomotion and engulfing food particles (phagocytosis).

Yellow fever is an acute viral disease and spread by the Aedes aegypti mosquito. It is characterized by the fever, chill, loss of appetite, nausea
Thus, the correct answer is option A.

Smallpox is an acute contagious disease caused by the variola virus of the orthopoxvirus family. It was one of the world's most devastating diseases known to humanity. But now it is completely eradicated from India through successful campaigns run by Indian Government. Hence, the correct answer is option C.

Dengue is the most common arboviral disease.
Plague is caused by the bacterium, Yersinia pestis.
Sleeping sickness is a parasitic disease of humans and other animals and is caused by the protozoa, Trypanosoma gambiense or T. brucei.
Syphilis is a sexually transmitted disease caused by the spirochete bacterium, Treponema pallidum. While Trichuris trichiura causes trichuriasis, a type of helminthic infection.
Therefore, the correct answer is option C.

The term 'Asd' is likely a typo for 'Asci' or 'Ascocarps'. Asci are the sexual spore-bearing cells found in Ascomycota fungi, which include Ascobolus, Saccharomyces, and Penicillium.

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.