Life Cycle of Filaria Worm

Q. Microfilariae circulate in the peripheral blood vessels during night. What could be a probable reason for this behaviour of the worms?

1. The deep blood vessels do not provide a conducive environment during night
2. It ensures the vector, the night time mosquito, will have a higher chance of transmitting them elsewhere
3. Female adult parasite produces around 50, 000 larvae per day. All of them cannot stay together.
4. Blood flows faster in peripheral blood vessels enabling them to circulate freely

Q. Which of the following pathogens is not transmitted by a vector?

1. Plasmodium
2. Alpha virus
3. Wuchereria bancrofti
4. Salmonella typhi

Q.

Tapeworms infect the digestive tract of human beings.

1. True
2. False

Q. Select the correct statement regarding Trichomonas and the disease it cause.

1. T. vaginalis is immotile in nature
2. It inhabits prostate in females
3. Females experience foul-smelling yellow vaginal discharge, painful urination, reddening of vulva, etc
4. Metronidazole although being an antibiotic proves ineffective against trichomoniasis

Q.

Do nematodes live in humans?

Q. Which of the following stages of the filaria worm is released into the bloodstream of the human host?

1. Adult parasite
2. Microfilariae
3. Parasite eggs
4. None of the above

Q. Ascaris occurs in

1. Stomach
2. Intestine
3. Rectum
4. Urinary bladder

Q. Which organism resides in Lymph nodes?

1. Taenia
2. Wuchereria
   
3. Plasmodium
4. Diplococcus

Q. Lymphatic filariasis is spread by

1. Mosquitoes
2. Parasitic worms
3. Parasitic Bacteria
4. Viruses

Q. In which disease does mosquito transmitted pathogen cause chronic inflammation of lymphatic vessels?

1. Ringworm disease
2. Amoebiasis
3. Ascariasis
4. Elephantiasis

Q.

Incubation period of Plasmodium vivax is

1. 9-14 days
2. 12-17 days
3. None of the above
4. 18-40 days

Q. In cases of filariasis, samples for microscopic detection of microfilariae are taken at night because

1. Since the disease is spread by mosquitoes, it is best to take the sample at night
2. The larvae circulate in the bloodstream of patients only at night
3. Microfilariae circulate in the capillaries in the superficial parts of the body only during the night
4. Microfilariae reproduce during the night and hence, larger numbers can be found in one sample

Q. In cases of filariasis, samples for microscopic detection of microfilariae are taken at night because

1. The larvae circulate in the bloodstream of patients only at night
2. Since the disease is spread by mosquitoes, it is best to take the sample at night
3. Microfilariae circulate in the capillaries in the superficial parts of the body only during the night
4. Microfilariae reproduce during the night so, larger number can be found in one sample

Q. Which of the following stages of the filarial worm is released into the bloodstream of the human host?

1. Adult parasite
2. Microfilariae
3. Parasite eggs
4. None of the above

Q. Ascaris lumbricoides infection occurs through

1. Sole of uncovered feet
2. Contaminated water and food
3. Improperly cooked measly pork
4. From air through inhalation

Q. Why only female mosquitos bite, causes dengue. If mail mosquito bites then what happens?? If male mosquito do not bite than why?

Q. Wuchereria is found in

1. Lymph nodes
2. Liver
3. Lungs
4. Kidneys

Q. In cases of filariasis, sample for microscopic detection of microfilariae is taken at night because

1. The larvae circulate in the bloodstream of patients only at night
2. Since the disease is spread by mosquitoes, it is best to take the sample at night
3. Microfilariae circulate in the capillaries in the superficial parts of the body only during the night
4. Microfilariae reproduce during the night so, larger number can be found in one sample

Q. Write scientific names of the two species of filarial worms causing filariasis. How do they affect the body of infected persons ? How does the disease spread?

Q. Ascaris juvenile causes

1. Appendicitis
2. Pneumonia
3. Hepatitis and brain damage
4. All of the above

Q. Lymphatic filariasis is spread by

1. Mosquitoes
2. Parasitic worms
3. Parasitic Bacteria
4. Viruses

Q. Wuchereria is found in

1. Lungs
2. Lymph nodes
3. Eye
4. Gonads

Q. Name the site and the host where each of the following are formed:
(i) Sporozoites
(ii) Gametoeytes

Q.

During the rainy season, the spread of disease booms. One of the symptoms of this disease is chillness. What disease could it be?

Q. Small blood vessels may get blocked in infection of ____________.

1. Plasmodium vivax
2. Plasmodium malariae
3. Plasmodium ovale
4. Plasmodium falciparum

Q. Which larval stage of Ascaris is infective?

1. First and fourth
2. Second and third
3. Second
4. Third and fourth