31. What is the function of the optic nerve?
[A] relays signals between the brain and the eyes
[B] relays signals between the brain and the ears
[C] relays signals between the brain and the skin
[D] relays signals between the brain and the tongue
Show Answer
Correct Answer: A [relays signals between the brain and the eyes]
Notes:
The optic nerve relays signals between the brain and the eyes. It acts as the agent of vision.
32. Which of the following is present in the oral cavity or buccal cavity?
[A] teeth
[B] tongue
[C] salivary glands
[D] All of the above
Show Answer
Correct Answer: D [All of the above]
Notes:
Teeth, tongue, and salivary glands are present in the oral cavity or buccal cavity.
33. The nutritive medium for the ejaculated sperms is given by which of the following?
[A] fallopian tube
[B] vaginal fluid
[C] seminal fluid
[D] uterine lining
Show Answer
Correct Answer: C [seminal fluid]
Notes:
The nutrient medium for ejaculated spermatozoa is provided by seminal fluid.
34. Which of the following diseases can be transmitted to humans during milking?
[A] foot and mouth disease
[B] smallpox
[C] Ranikhet
[D] Cowpox
Show Answer
Correct Answer: D [Cowpox]
Notes:
Cowpox diseases can be transmitted to humans during milking. Cowpox is an infectious disease caused by the cowpox virus.
35. Which organ is affected by typhoid?
[A] liver
[B] spleen
[C] muscles
[D] All of the above
Show Answer
Correct Answer: D [All of the above]
Notes:
Typhoid is a bacterial infection that is caused by Salmonella typhi. The bacteria attack the gastrointestinal tract, which includes the liver, spleen, and muscles.
36. How are Infectious Diseases transmitted?
[A] Droplet Infection
[B] They are inherited
[C] By seeing patients
[D] Eating an unhealthy diet
Show Answer
Correct Answer: A [Droplet Infection]
Notes:
Infection can occur when a healthy person inhales droplets from the saliva, sputum, or nasal passages of an infected person.
37. Chicken Pox is caused by which micro-organism?
[A] Virus
[B] Bacteria
[C] Protozoa
[D] Fungus
Show Answer
Correct Answer: A [Virus]
Notes:
Chickenpox, also known as varicella, is a highly contagious infection caused by the varicella zoster virus. The disease results in a characteristic skin rash that forms small, itchy blisters, which eventually scab over. It is an airborne disease which spreads easily through the coughs and sneezes of an infected person.
38. The part of brain which controls emotional reactions in our body is ____:
[A] Hypothalamus
[B] Meninges
[C] Cerebrum
[D] Thalamus
Show Answer
Correct Answer: A [Hypothalamus]
Notes:
The brain’s limbic system controls emotional expression through the hypothalamus, which has control over the body’s emotional responses systems. The hypothalamus is responsible for regulating hunger, thirst, response to pain, levels of pleasure, sexual satisfaction, anger and aggressive behavior, etc. It also regulates pulse, blood pressure, breathing, and arousal in response to emotional circumstances.
39. Root cap is derived from
____:
[A] Dermatogen
[B] Calyptrogen
[C] Protoderm
[D] Histogen
Show Answer
Correct Answer: B [Calyptrogen]
Notes:
Calyptrogen is a layer of rapidly dividing cells at the tip of a plant root, from which the root cap is formed. It occurs in grasses and many other plants. The root cap is formed by several layers of cells that envelop the root tip externally. This covering of cells, of which the outermost ones are dead, envelops and protects the growing tip of root.
40. In male sharks, Claspers are found attached to
____:
[A] Anal fin
[B] Ventral fin
[C] Pectoral fin
[D] Pelvic fin
Show Answer
Correct Answer: D [Pelvic fin]
Notes:
Claspers are organs found in male elasmobranchs. Each male has two claspers. They are located along the inner side of the shark or ray’s pelvic fin and are used in reproduction. During mating, the male deposits his sperm into the female’s cloaca (the opening that serves as the entrance to the uterus, intestine and urinary tract) via grooves that lie in the upper side of the claspers.
