Tag: biology

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

The vector of 'break bone fever' is

  1. Culex

  2. Aedes

  3. Anopheles

  4. None of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Break bone fever is another name for dengue fever. It is a mosquito-borne tropical disease caused by the dengue virus. It is transmitted by several species of the mosquito within the genus Aedes aegypti.
Therefore, the correct answer is option B.

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

Influenza is caused by 

  1. Virus

  2. Bacteria

  3. Algae

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

Influenza is commonly known as 'flu' and is a contagious respiratory illness caused by influenza viruses. It can cause mild to severe illness and at times can lead to death. The best way to prevent the flu is by getting a flu vaccination each year.

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

Dengue is transmitted by

  1. Aedes

  2. Male Anopheles

  3. Female Anopheles

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

Aedes aegypti, the principal mosquito vector of dengue viruses is an insect closely associated with humans and their dwellings. People not only provide the mosquitoes with blood meals but also water-holding containers in and around the home needed to complete their development. The mosquito lays her eggs on the sides of containers with water and eggs hatch into larvae after a rain or flooding. A larva changes into a pupa in about a week and into a mosquito in two days. 

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

Match the following with refernce to the insects and diseases.

List I List II
(A) Aedes (I) Dermatobiasis
(B) Cimex (II) Typhoid
(C) Psorophora (III) Encephalitis
(D) Musca (IV) Bubonic plague
(V) Break bone fever

Identify the sequence of list II with respect to List I.

  1. A- (V), B- (I), C- (III), D- (II)

  2. A- (IV), B- (V), C- (III), D- (I)

  3. A- (V), B- (IV), C- (I), D- (II)

  4. A- (V), B- (IV), C- (II), D- (I)
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The Aedes aegypti mosquito can transmit the viruses that cause dengue fever or breakbone fever.
Psorophora columbiae mosquito is a known vector of encephalitis.
Diseases carried by house flies (musca domestica) include typhoid, cholera and dysentery.
Cimex (bed bug) causes dermatobiasis.

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

Which of the following disease is now considered nearly eradicated from India?

  1. Plague

  2. Kala azar

  3. Small pox

  4. Influenza
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Smallpox is a very serious illness caused by a virus, called the variolavirus. Smallpox gets its name from the pus-filled blisters (or pocks), that form during the illness. Small pox is an acute highly communicable disease. It is caused by virus named variolavirus. Now it is nearly eradicated from India.

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

What are plant-like protists collectively called?

  1. Protozoans

  2. Algae

  3. Fungi

  4. Pseudopodia
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
The five kingdom classification was proposed by R. H. Whittaker which classifies all the living organisms into these five kingdoms. The Protista is a kingdom of simple single-celled eukaryotic organisms. They have well-developed cell organelles on the basis of which they have been classified into plant and animals like protists. The plant-like protists have chlorophyll, can perform photosynthesis and are collectively known as protists.
Thus, the correct answer is option B. 
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

A group of biology students were studying about the algae. They prepared a sample slide using a water sample drawn from a puddle. While observing the sample under microscope, they noted that those were living in the colony and the colony was coated with a jelly-like substance. Using these hints identify the organism.

  1. Ulva

  2. Sargassum

  3. Volvox

  4. Diatom
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Volvox is a freshwater green alga. It is found in multicellular colonies. These colonies are known as "coenobium". They also move together in colonies.

So, in this case, option C " Volvox" is the correct answer.

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

Colourless, unicellular, cell wall bound, spherical or rod-shaped micro-organism lacking organized nucleus is called as

  1. Mycoplasma

  2. Virus

  3. Bacteria

  4. Cyanobacteria
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

According to five kingdom classification, bacteria are placed in kingdom monera. Organisms of kingdom monera are single celled and they have cell wall made up of peptidoglycans. Their nuclear membrane is absent, have single chromosome and do not have membrane bound cell organelles. DNA is double stranded and suspended in cytoplasm (called nucleoid).

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

Exoskeleton of coelenterates is

  1. Siliceous

  2. Chitinous

  3. Calcareous

  4. Both B and C.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Coelenterates (Cnidarians) like corals often produce a calcareous exoskeleton. Some species also have chitinous components in their structure.

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 kingdom includes Amoeba?

  1. Porifera

  2. Protozoa

  3. Platyhelminthes

  4. None of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
The kingdom protozoa include single-celled eukaryotic organisms. Amoeba is a single-celled eukaryotic organism that has no definite shape and that moves by means of pseudopodia. As amoeba is single-celled eukaryotic organism it is placed is kingdom Protozoa.
So, the correct answer is 'Protozoa'.