31. Dirofilariasis is another name for an infection of which parasite?
[A] Heartworm
[B] Roundworm
[C] Hookworm
[D] Tapeworm
Show Answer
Correct Answer: A [Heartworm]
Notes:
Dirofilariasis is a disease caused by Dirofilaria worm infection. Dirofilaria immitis are also known as heartworm or dog heartworm.
32. Wooden tongue in cattle is caused by which of the following bacteria?
[A] Sphaerophorus necrophorus
[B] Clostridium chauvoei
[C] Actinobacillus lignieresi
[D] Erysipelothrix insidiosa
Show Answer
Correct Answer: C [Actinobacillus lignieresi]
Notes:
Wooden tongue in cattle is caused by Actinobacillus lignieresi bacteria.
33. What is the main cause of gout in the human body?
[A] too much uric acid in the body
[B] too much lactic acid in the body
[C] too much vitamins in the body
[D] too much iron in the body
Show Answer
Correct Answer: A [too much uric acid in the body]
Notes:
The main cause of gout is too much uric acid in the human body. This is a condition called hyperuricemia.
34. What is Bt cotton?
[A] cloned plant
[B] transgenic plant
[C] hybrid plant
[D] mutated plant
Show Answer
Correct Answer: B [transgenic plant]
Notes:
Bt cotton is a transgenic plant. Plants in which one or more genes of another species have been introduced into the genome using genetic engineering procedures are called transgenic plants.
35. Approximately how many pairs are there in the human genome?
[A] 6 billion base pairs
[B] 5 billion base pairs
[C] 3 billion base pairs
[D] 4 billion base pairs
Show Answer
Correct Answer: C [3 billion base pairs]
Notes:
Approximately 3 billion base pairs are there in the human genome. The complete set of nucleic acid sequences for humans encoded as DNA within 23 chromosome pairs in the cell nucleus and a small DNA molecule found within individual mitochondria is called the human genome.
36. ___ is the study of the physical form and external structure of plants:
[A] Physiology
[B] Anatomy
[C] Phytomorphology
[D] Cytology
Show Answer
Correct Answer: C [Phytomorphology]
Notes:
Plant morphology or phytomorphology is the study of the physical form and external structure of plants. This is usually considered distinct from plant anatomy, which is the study of the internal structure of plants, especially at the microscopic level. It is useful in the visual identification of plants.
37. Yeast is a ____:
[A] Bacteria
[B] Fungi
[C] Algae
[D] Bryophyte
Show Answer
Correct Answer: B [Fungi]
Notes:
Yeast are eukaryotic, single-celled microorganisms classified as members of the fungus kingdom. They are estimated to constitute 1% of all described fungal species. Yeasts, such as Candida albicans, are opportunistic pathogens and can cause infections in humans. Commercially they are widely used in production of alcohol and carbon dioxide. Hence, they are known to lay foundation of bakery and brewery industries.
38. The average life span of red blood corpuscles is about ____:
[A] 100 – 120 days
[B] 100 – 200 days
[C] 160 – 180 days
[D] 150 – 200 days
Show Answer
Correct Answer: A [100 – 120 days]
Notes:
The red blood cells develop in the bone marrow and circulate for about 100–120 days in the body before their components are recycled by macrophages in liver and spleen (Grave yard of RBC). The old, worn out and dead RBC are destroyed mainly in an organ called spleen.
39. Which of the following is a CORRECT relation of length of small intestines of an herbivore and a carnivore?
[A] Herbivore = Carnivore
[B] Herbivore < Carnivore
[C] Herbivore > Carnivore
[D] None of the above
Show Answer
Correct Answer: C [Herbivore > Carnivore]
Notes:
Herbivorous animals have longer intestines than that of carnivorous animals. This is because their diet is grass and plants, made up of fibre and cellulose which are hard to digest. As a result, the herbivorous animals need a longer digestive track to digest their foods completely.
40. How many canine teeth does an adult human have?
[A] 8
[B] 4
[C] 3
[D] 2
Show Answer
Correct Answer: B [4]
Notes:
A normal adult mouth has 32 teeth, which (except for wisdom teeth) have erupted by about age 13. The canines are situated at the ‘corners’ of the dental arches. They have a sharp, pointed biting surface. Their function is to grip and tear food. There are four canine teeth in both primary and permanent dentitions.
