Zoology - Online Test
Q1. Which of the following is a primary sex organ of female?
Answer : Option C
Explaination / Solution:
Ovary is the primary sex organ of female reproductive system in human beings. Egg is released from one of the ovary each month. It also release hormone.
Q2. The number of substrate molecules changed per minute by a molecule of enzyme is called
Answer : Option C
Explaination / Solution:
The number of substrate molecules changed per minute by a molecule of enzyme is called turn over number. Higher the turn over number more effective is the enzyme.
Q3. The mature sperms are stored in the
Answer : Option C
Explaination / Solution:
No Explaination.
Q4. Which of the following blood components play a major role in blood coagulation ?
Answer : Option A
Explaination / Solution:
Platelets also called thrombocytes are cell fragments produced from megakaryocytes. Platelets can release a variety of substances most of which are involved in the coagulation or clotting of blood.
Q5. Micro-organisms that grow in milk and convert it to curd is commonly called
Answer : Option A
Explaination / Solution:
The micro-organisms that grow in milk and convert it to curd is commonly called lactic acid bacteria. Micro-organism such as Lactobacillus and others commonly called as lactic acid bacteria (LAB).
Q6. What is the life span of RBC in humans ?
Answer : Option A
Explaination / Solution:
No Explaination.
Q7. Which of the following is correct regarding HIV, hepatitis B, gonorrhoea and trichomoniasis?
Answer : Option C
Explaination / Solution:
No Explaination.
Q8.
Air pollution is:
i. 5th leading cause of deaths in Indian sub-continent.
ii. ranked among top 10 killers in the world.
iii. 7th most dangerous killer in south Asia.
Answer : Option A
Explaination / Solution:
Air pollution causes a number of respiratory disease including lung cancer. It is the 5th leading causes of deaths in Indian sub-constinent and 7th most dangerous killer in south Asia.
Q9. Haemophilia is more common in males because it is a
Answer : Option D
Explaination / Solution:
No Explaination.
Q10. Main function of uriniferous tubules
Answer : Option A
Explaination / Solution:
No Explaination.
