What is common about Trypanosoma, Noctiluca, Monocystis and Giardia?
- These are all unicellular protists
- They have flagella
- They produce spores
- These are all parasites
The Correct Option is A
Solution and Explanation
All four of these organisms belong to the group of protists, which are single-celled eukaryotic microorganisms. They have diverse characteristics and lifestyles, but they share the common feature of being unicellular.
So, the correct option is (A): These are all unicellular protists
Top Questions on Biological Classification
- Which of the following organisms is correctly matched with its kingdom?
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Each of the following characteristics represents a Kingdom proposed by Whittaker. Arrange the following in increasing order of complexity of body organization.
A. Multicellular heterotrophs with cell wall made of chitin.
B. Heterotrophs with tissue/organ/organ system level of body organization.
C. Prokaryotes with cell wall made of polysaccharides and amino acids.
D. Eukaryotic autotrophs with tissue/organ level of body organization.
E. Eukaryotes with cellular body organization.
Choose the correct answer from the options given below:- NEET (UG) - 2025
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- The difference in characters within very closely related groups of organisms are called:
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- Which kingdom is included in all kingdom system classifications?
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- Match List I with List II
List I List II A Typhoid I Fungus B Leishmaniasis II Nematode C Ringworm III Protozoa D Filariasis IV Bacteria
Choose the correct answer from the options given below:- NEET (UG) - 2024
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Questions Asked in NEET exam
The current passing through the battery in the given circuit, is:
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- Current electricity
A bob of heavy mass \(m\) is suspended by a light string of length \(l\). The bob is given a horizontal velocity \(v_0\) as shown in figure. If the string gets slack at some point P making an angle \( \theta \) from the horizontal, the ratio of the speed \(v\) of the bob at point P to its initial speed \(v_0\) is :
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- Pendulums
- Two cities X and Y are connected by a regular bus service with a bus leaving in either direction every T min. A girl is driving scooty with a speed of 60 km/h in the direction X to Y. She notices that a bus goes past her every 30 minutes in the direction of her motion, and every 10 minutes in the opposite direction. Choose the correct option for the period T of the bus service and the speed (assumed constant) of the buses.
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- Relative Velocity
- The intensity of transmitted light when a polaroid sheet, placed between two crossed polaroids at \(22.5^\circ\) from the polarization axis of one of the polaroids (\(I_0\) is the intensity of polarised light after passing through the first polaroid):
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A full wave rectifier circuit with diodes (\(D_1\)) and (\(D_2\)) is shown in the figure. If input supply voltage \(V_{in} = 220 \sin(100 \pi t)\) volt, then at \(t = 15\) msec:
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- Semiconductor Diode
Concepts Used:
Biodiversity and Conservation
The term ‘biodiversity’ is derived from the two words- ‘bios' which means life and ‘diversity’ i.e, differentiation or variation. Edward Wilson, the sociobiologist was the first to popularise the term ‘biodiversity’ in the year 1992. The term implies the occurrence of various plants and animals along with their variants such as biotypes, ecotypes and genes on earth. In our biosphere, the immense diversity or heterogeneity remains not only at the species level but also, at every level of biological organization that ranges from macromolecules in the cells to biomes.
Biodiversity and Conservation is a topic covered under the fifteenth chapter and Unit 5 of NCERT class 12 biology.