Zoology - Online Test
Q1.
A 5 year old girl Sita and her grandmother, together met an accident. Her grandmother got her leg fractured but Sita didn’t suffer from any fractures :
i. At young age bones are more flexible and contain lots of organic matter.
ii. Sita’s has a more powerful immune system than her grandmother.
iii. In old people bones become hard and brittle.
Answer : Option B
Explaination / Solution:
Generally bones are flexible at young age and become hard and brittle at old age.
Q2. Expand GEAC
Answer : Option A
Explaination / Solution:
The Genetic Engineering Approval Committee (GEAC) is the apex body constituted in the Ministry of Environment and Forests under 'Rules for Manufacture, Use, Import, Export and Storage of Hazardous Microorganisms/Genetically Engineered Organisms or Cells 1989', under the Environment Protection Act, 1986.
Q3. The function of copper-T is to prevent
Answer : Option C
Explaination / Solution:
Copper-T is an intra-uterine device that is used by female to avoid unwanted pregnancy. This device prevents implantation and decrease the motility of sperm by releasing copper ions.
Q4. The ciliated columnar epithelium cells in human are known to occurs in
Answer : Option B
Explaination / Solution:
Ciliated columnar epithelium cells in human occur in bronchioles and fallopian tube. They contain small hair like cilia on free surface. This helps to move egg in to fallopian tube. In bronchioles it helps to move mucus or dust particles.
Q5. Diener discovered
Answer : Option A
Explaination / Solution:
T.O. Diener discovered a new infectious agent that was 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.
Q6. At high altitudes our body compensates for deficiency of oxygen by
Answer : Option A
Explaination / Solution:
At higher altitudes concentration of oxygen decreases in air due to decreae in air pressure. Our body compensate the deficiency of oxygen at higher altitude by reducing affinity of hemoglobin (Hb) for oxygen binding.
Q7. Which digestive disorder reduces the absorption of food?
Answer : Option B
Explaination / Solution:
The abnormal frequency of bowel movement and increased liquidity of the faecal discharge reduces the absorption of food leading to diarrhoea.
Q8. Which of the following birth control measure can be considered as the safest?
Answer : Option D
Explaination / Solution:
A number of birth control measures are used to prevent unwanted pregnancy. Sterilization technique is considered as the safest way. Condom prevents unwanted pregnancy as well as sexually transmitted disease.
Q9. Ramesh is suffering from cough and cold. However his taste receptors are working quite well, yet his food do not give him characteristic flavour and is thus less enjoyable because :
Answer : Option D
Explaination / Solution:
During cough and cold, taste buds works properly but olfactory receptors present in nose are badly affected. Due to this foods become less enjoyable as smell play role in tasting food.
Q10. Who was the first to explain that cells divide?
Answer : Option C
Explaination / Solution:
The German doctor Rudolf Virchow proposed in 1855 that all cells result from the division of previously existing cells, and this idea became a key piece of modern cell theory.
