1. What is the main function of Lymphocytes?
[A] Production of Antibodies
[B] Production of Antigens
[C] Production of White Blood Cells
[D] All of the above
Show Answer
Correct Answer: A [Production of Antibodies]
Notes:
Lymphocytes are a type of white blood cell that are part of the immune system. Their main function is to produce antibodies that protect the body from foreign invaders, such as viruses, bacteria, and toxins. These antibodies help the body respond to and eliminate foreign invaders, which provides protection against infectious diseases.
Lymphocytes also help the body’s immune system remember every antigen it comes in contact with. After an encounter, some lymphocytes turn into memory cells.
There are two main types of lymphocytes: B cells and T cells. B cells produce antibodies that attack invading bacteria, viruses, and toxins. T cells destroy the body’s own cells that have been taken over.
If you have low numbers of lymphocytes (lymphopenia), you are at higher risk of infection. Symptoms can range from mild to serious and are correlated to the severity of the lymphopenia as well as its duration. Some people have no symptoms.
2. Which among the following fishes does not have Central Nervous System?
[A] Dog Fish
[B] Cuttle Fish
[C] Jelly Fish
[D] Star Fish
Show Answer
Correct Answer: C [Jelly Fish]
Notes:
Jellyfish and sea jellies are the informal common names given to the medusa-phase of certain gelatinous members of the sub-phylum Medusozoa. Jellyfish do not have specialized systems for osmoregulation, respiration and circulation, and do not have a central nervous system.
3. Sexual cannibalism is a concept in which the female kills the male after mating and is normally found in _________?
[A] Dragon fly
[B] Spider
[C] Honey Bee
[D] None of the above
Show Answer
Correct Answer: B [Spider]
Notes:
In Honey Bee the male itself dies after copulation.
sexual cannibalism is common in many families of spiders and scorpions
4. Apart from the temporal bone, which among the following is considered as strongest bone in human body?
[A] Humerus
[B] Fibula
[C] Femur
[D] Tibia
Show Answer
Correct Answer: C [Femur]
Notes:
Apart from the temporal bone, femur is considered as strongest bone in human body. It is the only bone located within the human thigh. It is both the longest and the strongest bone in the human body. It extends from the hip to the knee.
5. Which among the following is true attribute to Polar bear?
[A] Herbivore
[B] Omnivore
[C] Carnivore
[D] Marsupial
Show Answer
Correct Answer: C [Carnivore]
Notes:
Please note that Polar Bear is the largest land carnivore animal, weighing about 350 to 700 kgs.
Kodiak bear which is also of same size is a Omnivore
6. Bubo bubo is the scientific name of which of the following species?
[A] Hen
[B] Peacock
[C] Eagle
[D] Owl
Show Answer
Correct Answer: D [Owl]
Notes:
Bubo bubo is the scientific name of owl. The Bubo bubo or the Eurasian eagle-owl is a species of eagle-owl that resides in much of Eurasia.
7. The term “Halitosis” denotes which among the following?
[A] Bad hearing
[B] bad breathe
[C] Baldness
[D] Excessive Sweating
Show Answer
Correct Answer: B [bad breathe]
Notes:
The term “Halitosis” denotes bad breath. It is the persistent, unpleasant odour in exhaled breath, usually not serious, commonly referred to as bad breath.
8. The insect “Apis mellifera” is commonly known as which among the following?
[A] Sand Fly
[B] Domestic Fly
[C] Honey Bee
[D] Spider
Show Answer
Correct Answer: C [Honey Bee]
Notes:
The insect “Apis mellifera” is commonly known as the honey bee. The Western honey bee is the most common of the 7–12 species of honey bees worldwide. The genus name “Apis” is Latin for “bee”, and “mellifera” is Latin for “honey-bearing” or “honey carrying”. Honey bees are known for their role in pollination. They were domesticated for honey production and crop pollination. Honey bees produce honey, wax, propolis, and royal jelly. Honey bees are red/brown with black bands and orange yellow rings on their abdomen. They have hair on their thorax and less hair on their abdomen. The workers and queens have stingers, whereas the drones are stingless.
9. The Science of using mechanical devices with human muscle skeleton and nervous systems to assist or enhance motor control lost by trauma, disease or defect is called:
[A] Gerontechnology
[B] Biomechatronics
[C] Orthotics
[D] Bionics
Show Answer
Correct Answer: B [Biomechatronics]
Notes:
Biomechatronics is an applied interdisciplinary science that aims to integrate mechanical elements, electronics and parts of biological organisms. Biomechatronics includes the aspects of biology, mechanics, and electronics. It also encompasses the fields of robotics and neuroscience. The goal of this science is to make devices that interact with human muscle, skeleton, and nervous systems. The end result is that the devices will help with human motor control that was lost or impaired by trauma, disease or birth defects.
10. Which of the following is present in prokaryotic as well as eukaryotic cells?
[A] Mitochondria
[B] Golgi Bodies
[C] Lysosomes
[D] Ribosomes
Show Answer
Correct Answer: D [ Ribosomes]
Notes:
Mitochondria, Chloroplasts, Golgi Bodies, Lysosomes, Endoplasmic reticulum and Peroxisomes are absent in prokaryotic cells. Ribosomes are smaller in prokaryotic cells and larger in eukaryotic cells.