Chapter Exam

Chapter 6 ZOOLOGY : Biology in Human Welfare — Online MCQ Test

Q: Which of the following is the causative agent of Amoebiasis in humans?

Answer: A. Entamoeba histolytica — Entamoeba histolytica is a protozoan parasite that causes amoebiasis, infecting the large intestine of humans.

Q: The primary vector responsible for transmitting malaria to humans is:

Answer: B. Female Anopheles mosquito — The female Anopheles mosquito acts as a biological vector for the transmission of Plasmodium parasites.

Q: Which organ in the human body is primarily affected by the exo-erythrocytic cycle of Plasmodium?

Answer: C. Liver — Before entering red blood cells, the sporozoites invade liver cells and undergo multiplication.

Q: A student finds a parasite in a patient's blood sample that is actively producing gametocytes. Where will the subsequent sexual reproduction of this parasite occur?

Answer: C. In the gut of a female Anopheles mosquito — Gametocytes are formed in human blood, but they only fuse to form a zygote within the gut of the female Anopheles mosquito.

ZOOLOGY · CLASS 11 INTER I YEAR · Andhra State Board

Practice Chapter 6 ZOOLOGY : Biology in Human Welfare with a free chapter-wise online MCQ test for Andhra State Board CLASS 11 INTER I YEAR ZOOLOGY. This chapter covers: This chapter details human parasites Entamoeba Plasmodium Wuchereria life cycles disease transmission prevention vectors and biomedical applications.. AI-generated questions from basic to board-exam level, with instant results and explanations.

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Chapter 6 ZOOLOGY : Biology in Human Welfare — Important Questions & Answers (FAQ)

Frequently asked questions from Andhra State Board CLASS 11 INTER I YEAR ZOOLOGY — Chapter 6 ZOOLOGY : Biology in Human Welfare, with answers and explanations. These are sample questions; the exam has its own separate question set.

Which of the following is the causative agent of Amoebiasis in humans?

A. Entamoeba histolytica ✓
B. Plasmodium vivax
C. Wuchereria bancrofti
D. Ascaris lumbricoides

Answer: A. Entamoeba histolytica
Entamoeba histolytica is a protozoan parasite that causes amoebiasis, infecting the large intestine of humans.

The primary vector responsible for transmitting malaria to humans is:

A. Male Culex mosquito
B. Female Anopheles mosquito ✓
C. Female Aedes mosquito
D. Housefly

Answer: B. Female Anopheles mosquito
The female Anopheles mosquito acts as a biological vector for the transmission of Plasmodium parasites.

Which organ in the human body is primarily affected by the exo-erythrocytic cycle of Plasmodium?

A. Spleen
B. Heart
C. Liver ✓
D. Kidney

Answer: C. Liver
Before entering red blood cells, the sporozoites invade liver cells and undergo multiplication.

Why do malaria patients experience chills and high fever periodically?

A. Due to the release of toxins like haemozoin during RBC rupture ✓
B. Due to the rapid division of parasites in the liver
C. Due to the immune response against the mosquito saliva
D. Due to the formation of gametocytes in the blood

Answer: A. Due to the release of toxins like haemozoin during RBC rupture
The cyclic release of toxic substance 'haemozoin' during the rupture of infected erythrocytes triggers fever and chills.

A student finds a parasite in a patient's blood sample that is actively producing gametocytes. Where will the subsequent sexual reproduction of this parasite occur?

A. In the human liver cells
B. In the human red blood cells
C. In the gut of a female Anopheles mosquito ✓
D. In the human lymph nodes

Answer: C. In the gut of a female Anopheles mosquito
Gametocytes are formed in human blood, but they only fuse to form a zygote within the gut of the female Anopheles mosquito.