Tag: economic importance of bacteria and fungi

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Questions Related to economic importance of bacteria and fungi

Multiple choice biology living world and classification of microbes pathogen and their mode of transmission economic importance of bacteria and fungi diseases and immunity five kingdoms of living organisms

Which of the following pairs is not correctly matched?

  1. Dengue fever- Arbovirus

  2. Plague- Yersinia pestis

  3. Syphilis- Trichuris trichiura

  4. Sleeping sickness- Trypanosoma Gambiense
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

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.

Multiple choice biology living world and classification of microbes pathogen and their mode of transmission economic importance of bacteria and fungi diseases and immunity five kingdoms of living organisms

Asd are formed in _____________.

  1. Ascobolus

  2. Saccharomyces

  3. Penicillium

  4. All the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

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.

Multiple choice biology living world and classification of microbes pathogen and their mode of transmission economic importance of bacteria and fungi diseases and immunity five kingdoms of living organisms

Match the items in column I with column II and choose the
correct option

Column I Column II
(A) Ascus (1) Spirulina
(B) Basidium (2) Penicillum
(C) Protista (3) Agaricus
(D) Cyanobaderia (4) Euglena
(E) Animalia (5) Sponges


  1. (A)- (2),(,B ) - (3), (C) - (4), (D)- (5) , (E) - (1)

  2. (A) - (1), (B) - (2), (C) - (3), (D) - (5) , (E) - (4)

  3. (A) - (2), (B) - (5), (C) - (3), (D) - (1) , (E) - (4)

  4. (A) - (1), (B) - (2), (C) - (3), (D) - (4) , (E) - (5)

  5. (A) - (2), (B) - (3), (C) - (4), (D) - (1) , (E) - (5)
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

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.

Multiple choice biology living world and classification of microbes pathogen and their mode of transmission economic importance of bacteria and fungi diseases and immunity five kingdoms of living organisms

Encephalitis is a viral disease of humans which is transmitted by

  1. Anopheles

  2. Culex

  3. Aedes

  4. Culex and Aedes
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

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.

Multiple choice biology living world and classification of microbes pathogen and their mode of transmission economic importance of bacteria and fungi diseases and immunity five kingdoms of living organisms

Which one of the following is a common disease caused by a virus?

  1. Yellow fever

  2. Typhoid

  3. Syphilis

  4. Tetanus
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

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.

Multiple choice biology living world and classification of microbes pathogen and their mode of transmission economic importance of bacteria and fungi diseases and immunity five kingdoms of living organisms

The vector carrying virus which causes yellow fever in humans is a

  1. Mosquito

  2. Bug

  3. Louse

  4. Beetle
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

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.

Multiple choice biology living world and classification of microbes pathogen and their mode of transmission economic importance of bacteria and fungi diseases and immunity five kingdoms of living organisms

Common cold differs from pneumonia in, that 

  1. Pneumonia is a communicable disease, whereas, the common cold is a nutritional deficiency disease.

  2. Pneumonia can be prevented by a live attenuated bacterial vaccine, whereas, the common cold has no effective vaccine.

  3. Pneumonia is caused by a virus while the common cold is caused by the bacterium Haemophilus influenzae.

  4. Pneumonia pathogen infects alveoli, whereas, the common cold affects nose and respiratory passage but not the lungs.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
  • 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.
Multiple choice biology living world and classification of microbes pathogen and their mode of transmission economic importance of bacteria and fungi diseases and immunity five kingdoms of living organisms

Wheel animalcules are

  1. Coelenterates

  2. Echinoderms

  3. Rotifers

  4. Protozoans
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
  • 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'.
Multiple choice biology living world and classification of microbes pathogen and their mode of transmission economic importance of bacteria and fungi diseases and immunity five kingdoms of living organisms

In most simple type of canal system of Porifera, which of the following ways exhibit water flow?

  1. Ostia $\longrightarrow$ Spongocoel $\longrightarrow$ Osculum $\longrightarrow$ Exterior
  2. Spongocoel $\longrightarrow$ Ostia $\longrightarrow$ Osculum $\longrightarrow$ Exterior
  3. Osculum $\longrightarrow$ Spongocoel $\longrightarrow$ Ostia $\longrightarrow$ Exterior
  4. Osculum $\longrightarrow$ Ostia $\longrightarrow$ Spongocoel $\longrightarrow$ Exterior
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
The central body cavity of sponges is called spongocoel. Their body is porous. The inhalent pores are called ostia and exhalent pores are known as oscula. The body of a sponge is organised in such a manner as to form a complex system of pores and canals. This system is called canal system. Water flows In through ostia to spongocoel and comes out to exterior via osculum. The continuous water current flowing through the canal system is very important for the life of a sponge. It brings in food and oxygen and canes away carbon dioxide, nitrogenous wastes and reproductive bodies. Thus, the canal system helps the sponge in nutrition, respiration, excretion and reproduction. So, the correct answer is 'Ostia $\longrightarrow$ Spongocoel $\longrightarrow$ Osculum $\longrightarrow$ Exterior'.
Multiple choice biology living world and classification of microbes pathogen and their mode of transmission economic importance of bacteria and fungi diseases and immunity five kingdoms of living organisms

State whether the following statement is true or false:
Some organisms, like amoeba, can be classified as animals and plants.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

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

So, the statement is false.