1. In Gymnosperms seeds are__________?
[A] Always naked
[B] Always covered
[C] Naked in some and covered in others
[D] Absent
Show Answer
Correct Answer: A [Always naked]
Notes:
Gymnosperms are called so because they have naked ovules / seeds. In terms of plant evolution, they are first seed-bearing plants. They are inferior to Angiosperms because in Angiosperms, the ovules are covered.
2. A person develops resistance to the action of insulin in the body’s cells , it is called as___________?
[A] Type 1 Diabetes
[B] Type 2 Diabetes
[C] Hyabrid Diabetes
[D] None of the above
Show Answer
Correct Answer: B [Type 2 Diabetes]
Notes:
A person develops resistance to the action of insulin in the body’s cells , it is called as Type 2 Diabetes. Type 2 diabetes is a lifelong disease that prevents your body from using insulin the way it should be using.
3. Maximum Proteins part of our food are digested in which part of our alimentary canal ?
[A] Oral cavity
[B] Small intestine
[C] Large intestine
[D] Stomach
Show Answer
Correct Answer: B [Small intestine]
Notes:
Maximum Proteins part of our food are digested in stomach and duodenum part of small intestine. Enzyme pepsin is secreted in the stomach and trypsin, chymotrypsin, and carboxypeptidase are secreted from the pancreas for digestion of protein.
4. Who among the following coined the term Bacterium?
[A] Antonie van Leeuwenhoek
[B] Christian Gottfried Ehrenberg
[C] Louis Pasteur
[D] Robert Koch
Show Answer
Correct Answer: B [Christian Gottfried Ehrenberg]
Notes:
Christian Gottfried Ehrenberg was a was one of the most famous and productive scientists of his time. He was a German naturalist, zoologist, comparative anatomist, geologist, and microscopist. He coined the term Bacterium.
5. Dehydration in human body is caused due to the deficiency of which of the following?
[A] Water
[B] Hormones
[C] Vitamin
[D] Salt
Show Answer
Correct Answer: A [Water]
Notes:
Dehydration is a deficiency of water in thebody. Vomiting, diarrhea, excessive sweating, burns, kidney failure, and use of diuretics maycause dehydration. People feel thirsty, and asdehydration worsens, they may sweat less and excrete less urine.
6. HIV often changes its shape due to the presence of which of the following enzymes?
[A] Reverse Transcriptase
[B] Enterokinase
[C] Nucleoditase
[D] None of the above
Show Answer
Correct Answer: A [Reverse Transcriptase]
Notes:
A reverse transcriptase is an enzyme used to generate complementary DNA from an RNA template, a process termed reverse transcription. The viral DNA is cut and paste into the host cell DNA. The host cell gets tricked into making lots of proteins for the virus.
7. Auxiliary bud develops into which of the following parts of the plant?
[A] Fruit
[B] Leaf
[C] Roots
[D] Branch
Show Answer
Correct Answer: D [Branch]
Notes:
The axillary bud is a bud that develops in the axil of a leaf of a plant (synonymous with lateral bud). Axillary buds develop from the nodes which then becomes a new stem.
8. Which of the following diseases is hereditary? (UPSC Prelims 1987)
[A] Haemophilia
[B] Tuberculosis
[C] Cancer
[D] Dysentery
Show Answer
Correct Answer: A [Haemophilia]
Notes:
Haemophilia is a mostly inherited genetic disorder that impairs the body’s ability to make blood clots, a process needed to stop bleeding. This results in people bleeding longer after an injury, easy bruising, and an increased risk of bleeding inside joints or the brain.
9. What is the scientific name of sea fan?
[A] Psittaciformes
[B] Pavo cristatus
[C] Alcyonacea
[D] Corvus
Show Answer
Correct Answer: C [Alcyonacea]
Notes:
The scientific name of sea fan is Alcyonacea. Alcyonacea are an order of corals that do not produce calcium carbonate skeltons. They are found throughout the oceans of the world.
10. Which of the following branch of biology deals with the study of viruses?
[A] Cytology
[B] Mycology
[C] Virology
[D] Taxonomy
Show Answer
Correct Answer: C [Virology]
Notes:
Virology, the branch of microbiology that deals with the study of viruses.
