Tag: biodiversity and need of classification

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Multiple choice zoology biodiversity and conservation hotspots and methods of conservation biodiversity: conservation conservation of biodiversity basis of classification in animals basis of the classification of animals criteria for animal classification five kingdoms of living organisms biodiversity and need of classification biodiversity and classification

Latitude range with maximum species diversity is 

  1. $23.5^0 N -66.5 ^0 N $
  2. $23.5^0 S -66.5 ^0 S $
  3. $23.5^0 N -23.5 ^0 S $
  4. $66.5^0 N -66.5 ^0 S $
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
  • Latitudinal gradients of biodiversity are biogeographic patterns that quantify the ways in which taxonomic, phylogenetic, functional, genetic, or phenetic biodiversity change with the latitudinal position on the surface of the earth.
  • Species richness, or biodiversity, increases from the poles to the tropics. So the latitude range with maximum species diversity is the equator region, which is option C.
Multiple choice zoology biodiversity and conservation hotspots and methods of conservation biodiversity: conservation conservation of biodiversity basis of classification in animals basis of the classification of animals criteria for animal classification five kingdoms of living organisms biodiversity and need of classification biodiversity and classification

Rate of photosynthesis is maximum at

  1. Equator

  2. Tropic of Cancer

  3. Tropic of Capricorn

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

The rate of photosynthesis would be maximum at the equator because the the rate of photosynthesis depends on the light intensity. Maximum intensity of light occurs at the equator, and gradually decreases with increasing distance from the equator to the south and north poles. So the correct answer is 'Equator'.

Multiple choice biology biodiversity and classification monera five kingdoms of living organisms biodiversity and need of classification

Golgi apparatus does not occur in

  1. Yeast

  2. Liver cells

  3. Higher plants

  4. Bacteria and blue green algae
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Prokaryotes are unicellular organisms. They lack membrane-bound organelles like mitochondria, golgi apparatus. They also lack true nucleus. Instead, they have nucleoid or incipient nucleus. Nucleoid is an undifferetiated, unorganised, fibrillar nucleus without any limiting membrane. They have ribosomes in the cytoplasm. Examples include bacteria like E. coli, blue green algae. 

Thus, the correct answer is 'Bacteria and blue green algae.'

Multiple choice biology biodiversity and classification monera five kingdoms of living organisms biodiversity and need of classification

Which of the following is not a moneran?

  1. Spirulina

  2. Nostoc

  3. Oscillatoria

  4. Euglena
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Moneran are prokaryotic unicellular organisms. They lack membrane-bound organelles. They lack true nucleus. They have genetic material without nuclear envelope. The examples of Moneran include bacteria, blue green algae like Nostoc, Spirulina, Oscillatoria. Euglena is an eukaryotic organism

So, the correct answer is 'Euglena'

Multiple choice biology biodiversity and classification monera five kingdoms of living organisms biodiversity and need of classification

Prokaryotes are placed in a group known as 

  1. Monera

  2. Pteridophytes

  3. Bryophyta

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

Prokaryotes are placed in a group Monera. These includes bacteria, Cyanobacteria, Eubacteria, etc. They are unicellular organisms. They have cell wall. They lack membrane-bound organelles like mitochondria. They also lack true nucleus. Instead, they have nucleoid, a genetic material without nuclear envelope.

Thus, the correct answer is 'Monera.'

Multiple choice biology classification of plants monera five kingdoms of living organisms biodiversity and need of classification

Comma shaped bacteria are

  1. Bacilli

  2. Spirilla

  3. Vibrios

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

  • Bacteria having rod-shaped structure are called as Bacilli. Examples include Clostridium tetani, Corynebacterium.
  • Bacteria having spiral shape are called as Spirilla. Examples include Spirillum, Campylobacter.
  • Bacteria having a comma-like single curve in their body are Vibrio. Examples include Vibrio cholerae, Vibrio vulnificus.
  • Bacteria that are round in shape are called as cocci. Examples include Streptococcus pneumoniae, Staphylococcus aureus. 
Thus, the correct answer is 'Vibrios.'

Multiple choice biology biodiversity and classification monera five kingdoms of living organisms biodiversity and need of classification

In Whittaker's classification, non-nucleated unicellular organisms$/$ prokaryotes are included under

  1. Plantae

  2. Monera

  3. Protista

  4. Animalia
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Whittaker's classification includes five kingdom classification system. The five kingdoms include Monera, Protista, Fungi, Plantae, and Animalia. Monera includes Eubacteria and Archeobacteria. They include non-nucleated unicellular organisms. They are prokaryotes. They have a cell wall. They have no membrane-bound organelles and true nucleus.

Thus, the correct answer is 'Monera.'

Multiple choice biology biodiversity and classification monera five kingdoms of living organisms biodiversity and need of classification

These are the organisms which are called prokaryotes.

  1. Green algae, brown algae and red algae

  2. Yeasts and other fungi

  3. Mycoplasmas, bacteria, cyanobacteria

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

Prokaryotes are all single-celled organisms eg, Mycoplasmas, bacteria, cyanobacteria. So, the correct option is C.(Mycoplasmas, bacteria, cyanobacteria)

Multiple choice biology biodiversity and classification monera five kingdoms of living organisms biodiversity and need of classification

Death factor is secreted by 

  1. BGA

  2. Archaebacteria

  3. Fungi

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

Cyanobacteria (Blue-green algae or BGA) sometimes reproduce exponentially to form blooms. Blooming cyanobacteria can secrete death factors in such concentrations that they poison and even kill animals and humans. It can also accumulate in other animals such as fish and shellfish and cause poisonings such as shellfish poisoning.

So, the correct answer is 'BGA'.