1. Which among the following is not present in pure sugar ?
[A] Carbon
[B] Hydrogen
[C] Nitrogen
[D] Oxygen
Show Answer
Correct Answer: C [Nitrogen]
Notes:
Pure Sugar is sucrose C12H22O11.
2. Which among the following is not a function of Sympathetic nerves in Autonomic nervous system?
[A] Enhancing the heart beats
[B] constricting the blood vessels
[C] dilate pupils
[D] contract urinary bladder
Show Answer
Correct Answer: D [contract urinary bladder]
Notes:
contract urinary bladder is a function of Parasympathetic nerves. Sympathetic nerves relax urinary bladder.
3. Which among the following is a correct definition of Saprophytes?
[A] A parasitic plant that can complete its life cycle independent of a host
[B] A heterotrophic plant that feeds upon other living plants
[C] A heterotrophic plant that feeds upon dead organic matter
[D] A plant that is unable to synthesize a particular organic compound
Show Answer
Correct Answer: C [A heterotrophic plant that feeds upon dead organic matter]
Notes:
lysotrophic nutrition or Saprotrophic nutrition is a process of chemoheterotrophic extracellular digestion which is involved in the processing of decayed organic matter. It occurs in saprotrophs, and is most often associated with fungi and soil bacteria.
4. World’s first cloned Buffalo was born in which country?
[A] India
[B] China
[C] USA
[D] Russia
Show Answer
Correct Answer: A [India]
Notes:
The First cloned buffalo was born in February 2009 at National Dairy Research Institute, Karnal.
5. The insect “Apis mellifera” is commonly known as which among the following?
[A] Sand Fly
[B] Domestic Fly
[C] Honey Bee
[D] Spider
Show Answer
Correct Answer: C [Honey Bee]
Notes:
The insect “Apis mellifera” is commonly known as the honey bee. The Western honey bee is the most common of the 7–12 species of honey bees worldwide. The genus name “Apis” is Latin for “bee”, and “mellifera” is Latin for “honey-bearing” or “honey carrying”. Honey bees are known for their role in pollination. They were domesticated for honey production and crop pollination. Honey bees produce honey, wax, propolis, and royal jelly. Honey bees are red/brown with black bands and orange yellow rings on their abdomen. They have hair on their thorax and less hair on their abdomen. The workers and queens have stingers, whereas the drones are stingless.
6. Strontium-90, as a source of health issues after a nuclear disaster is most dangerous for which among the following organs of Human Body?
[A] Liver
[B] Blood
[C] Skin
[D] Bones
Show Answer
Correct Answer: D [ Bones]
Notes:
Strontium-90 is a “bone seeker” that exhibits biochemical behaviour similar to calcium, the next lighter Group 2 element. After entering the organism, most often by ingestion with contaminated food or water, about 70–80% of the dose gets excreted. Virtually all remaining strontium-90 is deposited in bones and bone marrow, with the remaining 1% remaining in blood and soft tissues. Its presence in bones can cause bone cancer, cancer of nearby tissues, and leukaemia. (wikipedia)
7. Which of the following is the characteristic of water present in coconut?
[A] liquid endocarp
[B] liquid nucellus
[C] liquid mesocarp
[D] degenerated liquid endosperm
Show Answer
Correct Answer: D [degenerated liquid endosperm]
Notes:
The coconut water from tender coconut that we are familiar with, is nothing but free nuclear endosperm (made up of thousands of nuclei) and the surrounding white kernel is the cellular endosperm. In the most common types of endosperm development, the Primary Endosperm Nucleus (PEN) undergoes successive.
8. Which organ of the body produces the fluid known as bile?
[A] Liver
[B] Pancreas
[C] Gall bladder
[D] Kidney
Show Answer
Correct Answer: A [Liver]
Notes:
Liver produces a digestive fluid known as bile. Liver release bile into Gall bladder, a small, pear shaped organ located just below your liver in the upper right side of your abdomen.
9. In the context of the organic evolution, the loss of limbs of snakes is explained by which of the following phenomenon? (UPSC Prelims 2002)
[A] Use and disuse of organs
[B] adaptation to living in burrows
[C] natural selection
[D] inheritance of acquired characters
Show Answer
Correct Answer: A [Use and disuse of organs]
Notes:
In organic evolution, Lamarck believed that any particular part of the body that is put into more frequent use has tendency to develop stronger and better while that part of body which is put into less or no use has tendency to gradually disappear. So, loss of limbs in snake is an example of use and disuse of organs.
10. Which among the following branches of science deals with the scientific study of interaction of soils with vegetative matter?
[A] Pedology
[B] Petrology
[C] Hydrology
[D] Edaphology
Show Answer
Correct Answer: D [Edaphology]
Notes:
Edaphology is one of the two branches of soil sciences which deals with the scientific study of influence of soils on the vegetative matter such as plants.
