1. In context with biology, which among the following is a Zoophyte?
[A] A plant that resembles an animal
[B] An animal that resembles a plant
[C] A plant that grows on an animal
[D] An animal that grows on a plant
Show Answer
Correct Answer: B [An animal that resembles a plant]
Notes:
A zoophyte is an animal that visually resembles a plant.
2. Which among the following causes Hydrophobia?
[A] Virus
[B] Bacteria
[C] Protozoan
[D] worm
Show Answer
Correct Answer: A [Virus]
Notes:
Hydrophobia which is also known as Rabies is a viral disease that causes inflammation of the brain in humans and other mammals. Some of the early symptoms can include fever and tingling at the site of exposure.
3. Plants growing on marshy areas are commonly called as _____?
[A] Oxylophytes
[B] Lithophytes
[C] Helophytes
[D] Psilophytes
Show Answer
Correct Answer: C [Helophytes]
Notes:
Helophyte are those plants which are typical of marshy or lake-edge environments, in which the perennating organ lies in soil or mud below the water level, but the aerial shoots protrude above the water for air.
4. From which part of the plant Glycyrrhiza glabra , Liquorice or Mulethi is obtained?
[A] Leaves
[B] Roots
[C] Fruits
[D] Stem
Show Answer
Correct Answer: B [Roots]
Notes:
Mulethi is powdered liquorice root and is an effective expectorant used since ancient times in Ayurvedic medicines. Its is also used in Jastimadhu which is a tooth powder. many cough syrups today contain Liquorice as an ingredient. It is also used in mouth ulcers and peptic ulcers.
5. The relationship between algae and fungi is an example of _?
[A] Symbiotic
[B] Parasitism
[C] Mutualism
[D] Commensalism
Show Answer
Correct Answer: A [ Symbiotic ]
Notes:
First option is the correct answer
Symbiotic relationships are a special type of interaction between species. Sometimes beneficial, sometimes harmful, these relationships are essential to many organisms and ecosystems. Mutualism is when both organisms involved are benefitted.
6. Which of the following is responsible for exchange of carbon dioxide for oxygen in the lungs?
[A] Alveoli
[B] Pharynx
[C] Tendons
[D] Duodenum
Show Answer
Correct Answer: A [ Alveoli ]
Notes:
Alveoli are tiny sacs in our lungs. The main function of the alveoli is the exchange of carbon dioxide for oxygen in the lungs.
7. The “Deoxyribose” which is a part of DNA and a constituent of hereditary material is a ___:
[A] Nucleic Acid
[B] Protein
[C] Lipid
[D] Carbohydrate
Show Answer
Correct Answer: D [ Carbohydrate]
Notes:
Deoxyribose is a Monosaccharide sugar.
8. The mosquito fern or Azolla is used as a biofertiliser because it__:
[A] Multiplies very fast to produce massive biomass
[B] Has association of nitrogen-fixing Rhizobium bacteria
[C] Has association of nitrogen fixing bluegreen algae
[D] Has association of mycorrhiza
Show Answer
Correct Answer: C [ Has association of nitrogen fixing bluegreen algae]
Notes:
Azolla, also known as mosquito fern, is used as a biofertilizer because it has a symbiotic relationship with nitrogen-fixing cyanobacteria. The cyanobacteria, Anabaena azollae, lives on the leaves of Azolla and can fix atmospheric nitrogen. This nitrogen-fixing ability increases the fertility of the soil and enhances crop yields.
Azolla is a small aquatic fern that grows on the surface of water or moist soil. It is used as a biofertilizer for rice in Asia. Azolla can be grown as a green manure before transplanting rice or as an intercrop with the rice. Both practices are reported to increase the growth and yield of rice.
Azolla is also used as animal feed, human food, medicine, and water purifier.
9. Which of the following diseases is caused by consumption of a wheat bread contaminated with a fungus called Claviceps purpurea?
[A] Lathyrism
[B] Ergotism
[C] Cinchonism
[D] Mushroom Poisoning
Show Answer
Correct Answer: B [ Ergotism]
Notes:
Cleviceps purpurea is an important ascomycete that grows on the grains of rye grass cereals. It produces the drug ergot, which is both a severe poison and a useful medicinal drug. It affects the central nervous system as well as causes the contraction of involuntary muscle. Ergotism, caused by eating infected rye bread, was common in the Middle Ages, when it was known as “St. Anthony’s Fire.
10. Hyponatremia and Hypernatremia are common electrolyte disorders resulting due to imbalance of which of the following?
[A] Sodium
[B] Potassium
[C] Calcium
[D] Iron
Show Answer
Correct Answer: A [ Sodium]
Notes:
Hyponatremia is a low sodium level in the blood. Mild symptoms include a decreased ability to think, headaches, nausea, and poor balance. Hypernatremia is an electrolyte imbalance under which we find high level of sodium in the blood.
