31. Filariasis is also known as elephantiasis because?
[A] disease Spreads through Elephants
[B] excessive enlargement of teeth
[C] excessive enlargement of legs
[D] the patient starts looking like an elephant
Show Answer
Correct Answer: C [excessive enlargement of legs]
Notes:
Filariasis is also known as elephantiasis because of excessive enlargement of the legs.
32. Which of the following is the earliest geological period?
[A] Cambrian
[B] Permian
[C] Jurassic
[D] Quaternary
Show Answer
Correct Answer: A [Cambrian]
Notes:
Cambrian is the earliest geological period. The Cambrian period was the first geological period of the Paleozoic Era and the Phanerozoic Eon.
33. Which of the following is not used as biomass?
[A] Hybrid poplar
[B] Willow algae
[C] Iron nails
[D] Trap grease
Show Answer
Correct Answer: C [Iron nails]
Notes:
Hybrid poplar and willow algae are energy crops. These can be used as biomass. Trap grease belongs to urban waste which can be used as biomass. Iron nails are not biomass.
34. A molecule that contains nitrogen and has the chemical properties of a base is called __
[A] RNA
[B] Nitrogenous base
[C] Bacteria
[D] Plasmid
Show Answer
Correct Answer: B [Nitrogenous base]
Notes:
A molecule that contains nitrogen and has the chemical properties of a base is called a Nitrogenous base. Nucleic acids are composed of a combination of 5 nitrogenous bases:
1. Guanine and adenine are double-ringed purine molecules.
2. Cytosine, thymine, and uracil are single-ringed pyrimidine molecules.
35. Animal protein is called first class protein because it is _____:
[A] Rich in essential amino acids
[B] d
Delicious in taste
[C] Cheaper in the market
[D] Easily digestible
Show Answer
Correct Answer: A [Rich in essential amino acids]
Notes:
Proteins from animals are called ‘first class’ proteins – they provide all the essential amino acids, including those that the body can’t make. Proteins from plants are ‘second class’ proteins.
36. “Slipper animalcule” is the common name for ___:
[A] Paramecium
[B] Trypanosoma
[C] Monocystis
[D] Plasmodium
Show Answer
Correct Answer: A [Paramecium]
Notes:
“Animalcule” is a old term for a microorganism first used by Anton Van Leeuwenhoek means “small animal”. A paramecium is shaped somewhat like a slipper (a soft shoe), so it is called the slipper animalcule. Other better-known animalcules include: Amoeba, called Proteus animalcule etc.
37. The plant from which cocoa and chocolate are obtained is a ___:
[A] Herb
[B] Shrub
[C] Small tree
[D] Very big tree
Show Answer
Correct Answer: C [Small tree]
Notes:
Chocolate production starts with harvesting cocoa in a forest. Cocoa comes from tropical evergreen Cocoa trees, such as Theobroma Cocoa which are small trees. These trees live in the understory of tropical forests and require other, taller trees to shelter them from wind and sun.
38. Which is the most abundant Vitamin found in carrot?
[A] Vitamin A
[B] Vitamin B
[C] Vitamin C
[D] Vitamin D
Show Answer
Correct Answer: A [Vitamin A]
Notes:
Vitamin A is a fat soluble vitamin that plays a critical role in maintaining healthy vision, neurological function. Carrots are rich in beta-carotene, which is converted to Vitamin A in the body. Carrots are a good source of several other vitamins and minerals, especially biotin, vitamin K (phylloquinone), potassium and Vitamin B6.
39. The smallest flowering plant is ____:
[A] Lemma
[B] Wolffia
[C] Ficus
[D] Azolla
Show Answer
Correct Answer: B [Wolffia]
Notes:
Wolffia is a genus of 9 to 11 species which include the smallest flowering plants on Earth. Commonly called water-meal or duckweed, these aquatic plants resemble specks of cornmeal floating on the water. Wolffia species are free-floating thalli, green or yellow-green, and without roots. The flower is produced in a depression on the top surface of the plant body. It has one stamen and one pistil.
40. The presence of air bubble in blood stream is dangerous to life because _____:
[A] The flow of blood is obstructed
[B] The flow of blood increases manifold
[C] Air combines with blood forming a complex
[D] The pressure of blood increases manifold
Show Answer
Correct Answer: A [The flow of blood is obstructed]
Notes:
The presence of air bubble in blood, known as air embolism, occludes blood vessels. The flow of blood is obstructed causing strokes, heart attacks, pulmonary complications. An arterial air embolism is far more dangerous than a venous embolism since it prevents oxygenated blood from reaching the target organ and cause ischemia. It can even lead to heart attack or stroke leading to death.
