Zoology - Online Test
Q1. Blood consists of
Answer : Option B
Explaination / Solution:
Blood is a fluid connective tissue containing plasma. It contains red blood cells (RBC), white blood cells (WBC) and platelets suspended in the plasma.
Q2. Which is NOT the characteristic of viroids?
Answer : Option A
Explaination / Solution:
Viroids are smaller than viruses and caused potato spindle tuber disease. It was found to be a free RNA; it lacked the protein coat that is found in viruses, hence the name viroid. The RNA of the viroid was of low molecular weight.
Q3. To avoid decline or death of bacterial cells in culture we must
Answer : Option B
Explaination / Solution:
Culture medium provide all the nutrients required for the growth of bacteria. To avoid the death or decline of bacterial cells in medium, culture medium must be changed periodically.
Q4. Malnutrition covers :
Answer : Option C
Explaination / Solution:
Malnutrition is the condition of having less than required amount of food or more than required amount of food. Both condition is harmful to health. So, malnutrition covers both undernutrition and overnutrition.
Q5. Which of the following disease is caused by virus and transmitted by mosquito?
Answer : Option D
Explaination / Solution:
The Flavivirus causes yellow fever, and it's transmitted when an infected mosquito bites you. Mosquitoes become infected with the virus when they bite an infected human or monkey. The disease cannot be spread from one person to another.
Q6. Cell organelles with single membrane is
Answer : Option C
Explaination / Solution:
Lysosomes are single membrane structures containing enzymes for digestion of all types of macromolecules.
Q7. DNA sequence that code for protein are known as
Answer : Option D
Explaination / Solution:
Exons are coding sections of an RNA transcript, or the DNA encoding it, that are translated into protein. Exons can be separated by intervening sections of DNA that do not code for proteins, known as introns.
Q8. The “hidden hunger” is due to
Answer : Option D
Explaination / Solution:
If a person get food that do not contain all micronutrient, protein and vitamins in required amount as per age, sex, working condition, this condition is called hidden hunger.
Q9. Conserving biodiversity provides major contribution to economy as :
Answer : Option D
Explaination / Solution:
Ecotourism is a form of tourism involving visiting fragile, pristine, and relatively undisturbed natural areas, intended as a low-impact and often small scale alternative to standard commercial mass tourism.
Conserving biodiversity provides a number of benefits along with contributaion to economy of the country by ecotourism. Large number of foreigner visit to diversity rich countries as tourist.
Q10. Identify the animal given below. Mention its phylum.
Answer : Option D
Explaination / Solution:
The animal is identified as Euspongia which belong to phylum Porifera.
