31. How many numbers of bones are present in the middle ear?
[A] Two
[B] Three
[C] Six
[D] Nine
Show Answer
Correct Answer: B [Three]
Notes:
The middle ear contains three tiny bones:
1. Hammer (malleus) — attached to the eardrum.
2. Anvil (incus) — in the middle of the chain of bones.
3. Stirrup (stapes) — attached to the membrane-covered opening that connects the middle ear with the inner ear.
32. Due to which process the waste is removed from our body?
[A] Excretion
[B] Respiration
[C] Exhalation
[D] Double Circulation
Show Answer
Correct Answer: A [Excretion]
Notes:
Due to excretion, waste is removed from our bodies with the help of organs. The kidney excretes urea and carbon dioxide from the lungs.
33. Ovum receives the sperm in the region of__
[A] Animal pole
[B] the Equator
[C] Vegetal pole
[D] Pigmented area
Show Answer
Correct Answer: C [Vegetal pole]
Notes:
Ovum receives the sperm in the region of the Vegetal pole. An embryo is divided into two hemispheres: the animal ovule and the vegetative pole within a blastula.
34. What causes black quarter in cattle?
[A] Euphorbia tirucalli
[B] Clostridium chauvoei
[C] Bacillus anthracis
[D] None of these
Show Answer
Correct Answer: B [Clostridium chauvoei]
Notes:
Clostridium chauvoei causes black quarter in cattle. It is an acute and highly fatal disease.
35. Which of the following disease is transmitted by animal bite and saliva?
[A] Rabies
[B] Tuberculosis
[C] Tetanus
[D] AIDS
Show Answer
Correct Answer: A [Rabies]
Notes:
Rabies disease is transmitted by animal bites and saliva.
36. What disease is caused by Corynebacterium?
[A] Whooping cough
[B] Tuberculosis
[C] Diphtheria
[D] Gonorrhoea
Show Answer
Correct Answer: C [Diphtheria]
Notes:
Diphtheria is a serious infection caused by strains of bacteria called Corynebacterium diphtheriae.
37. Which of the following diseases is not caused by the RNA virus?
[A] Yellow fever
[B] Smallpox
[C] Mumps
[D] German measles
Show Answer
Correct Answer: B [Smallpox]
Notes:
Yellow fever, Mumps, and German measles are caused by the RNA virus. Whereas Smallpox is caused by the DNA virus.
38. Mendel used which of the following one for his experiments.
[A] Pisum sativum
[B] Pisum album
[C] Oryza sativa
[D] Oryza Orientalis
Show Answer
Correct Answer: A [Pisum sativum]
Notes:
Mendel used Pisum sativum (peas)for his experiments because they saw many distinctive features in it and it could be easily grown and self-pollinated.
39. Where is compound manure made?
[A] Rotted vegetable and animal refuse
[B] Farmyard manure and green manure
[C] Farm refuse and household refuse
[D] Organic wastes from which biogas has been extracted
Show Answer
Correct Answer: A [Rotted vegetable and animal refuse]
Notes:
Compound manure is made of Rotted vegetables and animal refuse. A fertilizer that contains two or more nutrients and is also known as a multi-nutrient fertilizer is called Compound manure.
40. ____ being a higher category, is the assemblage of families which exhibit a few similar characters:
[A] Class
[B] Species
[C] Genus
[D] Order
Show Answer
Correct Answer: D [Order]
Notes:
Order is an assemblage of families which exhibit a few similar characters. The similar characters are less in number as compared to different genera included in a family. A class includes one or more orders.
