Which one of the following polymers is made of protein ?
[amp_mcq option1=”Rubber” option2=”Cotton” option3=”Wool” option4=”Jute” correct=”option3″]
This question was previously asked in
UPSC CAPF – 2017
Biology
192. Consider the following statements: Statement-I: Chameleon changes it
Consider the following statements:
- Statement-I: Chameleon changes its skin colour to match with the colour of the surroundings
- Statement-II: The skin of chameleon emits light of the colour of the surrounding through fluorescence
Which one of the following is correct in respect of the above statements and the code?
[amp_mcq option1=”Both the statements are individually true and Statement II is the correct explanation of Statement I” option2=”Both the statements are individually true but Statement II is NOT the correct explanation of Statement I” option3=”Statement I is true but Statement II is false” option4=”Statement I is false but Statement II is true” correct=”option3″]
This question was previously asked in
UPSC CAPF – 2017
193. Which one of the following statements regarding Zika virus is not corr
Which one of the following statements regarding Zika virus is not correct ?
[amp_mcq option1=”It was first isolated from a monkey in the Zika forest of Uganda” option2=”It is transmitted by daytime-active Aedes mosquitoes” option3=”It does not cause mother to child infection” option4=”Zika virus in pregnant women results in abnormal brain development of the fetus” correct=”option3″]
This question was previously asked in
UPSC CAPF – 2016
A) It was first isolated from a monkey in the Zika forest of Uganda: This is correct. The virus was first identified in rhesus monkeys in the Zika Forest of Uganda in 1947 during research on yellow fever.
B) It is transmitted by daytime-active Aedes mosquitoes: This is correct. Zika virus is primarily transmitted by the bite of infected Aedes species mosquitoes, particularly Aedes aegypti, which are known to bite during the day.
C) It does not cause mother to child infection: This is incorrect. Zika virus can be transmitted from a pregnant woman to her fetus during pregnancy or around the time of birth. This is known as congenital Zika syndrome.
D) Zika virus in pregnant women results in abnormal brain development of the fetus: This is correct. Infection during pregnancy, particularly in the first trimester, is strongly linked to microcephaly and other severe brain abnormalities in the developing fetus.
194. Which of the following are examples of carnivorous plants?
Which of the following are examples of carnivorous plants?
[amp_mcq option1=”Sundew Venus fly trap, Pitcher plant” option2=”Cuscuta, Rafflesia, Mistletoe” option3=”Sandalwood tree, Broom rape, Pitcher plant” option4=”Cuscuta, Bladderwort, Mistletoe” correct=”option1″]
This question was previously asked in
UPSC CAPF – 2016
– Sundews have sticky glands on their leaves to trap insects.
– Venus fly traps have hinged leaves that snap shut to capture prey.
– Pitcher plants have modified leaves forming pitfall traps, often containing digestive enzymes or bacteria.
– Cuscuta (dodder) and Mistletoe are parasitic plants, obtaining nutrients from host plants.
– Rafflesia is a parasitic flowering plant.
– Sandalwood tree can be hemiparasitic.
– Broom rape is a parasitic plant.
– Bladderwort is a carnivorous plant (Option D has one correct example).
195. Vaccination involves :
Vaccination involves :
[amp_mcq option1=”injecting the body with materials that stimulate the body to produce antibodies” option2=”injecting the body with materials that stimulate the body to produce antigens” option3=”the use of monoclonal antibodies to cure a disease” option4=”use of antibiotics to cure diseases” correct=”option1″]
This question was previously asked in
UPSC CAPF – 2016
– The presence of these antigens triggers an immune response, including the production of antibodies and the formation of memory cells.
– This prepares the body to mount a rapid and effective immune response if it encounters the actual, live pathogen later.
– Vaccination prevents disease, while antibiotics (Option D) treat bacterial infections once they occur. Monoclonal antibodies (Option C) are specific antibodies used for therapeutic purposes, different from the principle of vaccination. Option B is incorrect as vaccination stimulates the body *against* antigens, not to produce them.
196. How is the rate of transpiration affected by decreasing humidity and b
How is the rate of transpiration affected by decreasing humidity and by decreasing light intensity ?
[amp_mcq option1=”Decreasing humidity: Decreases, Decreasing light intensity: Decreases” option2=”Decreasing humidity: Increases, Decreasing light intensity: Decreases” option3=”Decreasing humidity: Increases, Decreasing light intensity: Increases” option4=”Decreasing humidity: Decreases, Decreasing light intensity: Increases” correct=”option2″]
This question was previously asked in
UPSC CAPF – 2016
– Humidity affects the water potential gradient: Lower humidity in the air increases the difference in water potential between the leaf’s interior and the surrounding air, driving water vapor out faster.
– Light intensity affects stomatal opening: Generally, stomata open in the light to allow CO2 intake for photosynthesis. Reduced light intensity causes stomata to close, reducing water loss through transpiration.
197. The subunits of DNA are known as :
The subunits of DNA are known as :
[amp_mcq option1=”Nucleotide” option2=”Nucleosome” option3=”Nucleoside” option4=”Polypeptide” correct=”option1″]
This question was previously asked in
UPSC CAPF – 2016
– DNA is a polymer formed by linking many nucleotides together through phosphodiester bonds, creating a polynucleotide chain.
– Two such chains typically form a double helix structure, held together by hydrogen bonds between the bases.
– A nucleosome is a basic structural unit of DNA packaging in eukaryotes, consisting of a segment of DNA coiled around a core of histone proteins.
– A polypeptide is a linear organic polymer consisting of a large number of amino-acid residues bonded together in a chain, forming a protein.
198. Which one of the following is the correct taxonomic hierarchy ?
Which one of the following is the correct taxonomic hierarchy ?
[amp_mcq option1=”Kingdom – phylum – order – genus – family – class – species” option2=”Kingdom – order – class – phylum – family – genus – species” option3=”Kingdom – class – order – phylum – family – species – genus” option4=”Kingdom – phylum – class – order – family – genus – species” correct=”option4″]
This question was previously asked in
UPSC CAPF – 2016
– It is a hierarchical system used to classify organisms based on shared characteristics.
– ‘Kingdom’ is the broadest category, while ‘Species’ is the most specific.
– Organisms within a lower rank (e.g., Genus) are more closely related to each other than organisms in a higher rank (e.g., Family).
199. From which among the following pairs of species, a small quantity of f
From which among the following pairs of species, a small quantity of fine quality wool is obtained in India ?
[amp_mcq option1=”Pashmina goats and Angora rabbits” option2=”Pashmina rabbits and Angora goats” option3=”Pashmina rabbits and Angora sheep” option4=”Pashmina goats and Angora sheep” correct=”option1″]
This question was previously asked in
UPSC CAPF – 2015
200. Match List I with List II and select the correct answer using the code
Match List I with List II and select the correct answer using the code given below the Lists :
List-I
(Scientist)
A. J.D. Watson
B. Louis Pasteur
C. Carl Linnaeus
D. Charles Darwin
List-II
(Area of study)
1. Microbiology
2. Taxonomy
3. Molecular Biology
4. Evolution
Code :
| A | B | C | D | |
| (a) | 4 | 2 | 1 | 3 |
| (b) | 4 | 1 | 2 | 3 |
| (c) | 3 | 1 | 2 | 4 |
| (d) | 3 | 2 | 1 | 4 |
[amp_mcq option1=”A-4, B-2, C-1, D-3″ option2=”A-4, B-1, C-2, D-3″ option3=”A-3, B-1, C-2, D-4″ option4=”A-3, B-2, C-1, D-4″ correct=”option3″]
This question was previously asked in
UPSC CAPF – 2015
– Louis Pasteur was a pioneering microbiologist and chemist, famous for his work on germ theory, pasteurization, and vaccines. His major contributions are in the field of Microbiology.
– Carl Linnaeus was a Swedish botanist, zoologist, and physician who formalized binomial nomenclature, the modern system of naming organisms. He is considered the “father of modern taxonomy”.
– Charles Darwin was a British naturalist whose theory of evolution by natural selection revolutionized the understanding of life on Earth. His primary area of study was Evolution.