Zoology - Online Test
Q1. Viral infection can be treated by
Answer : Option D
Explaination / Solution:
Interferons can be sued to treat viral infection as interferon are proteins made and released by host cells in response to presence of pathogen as viruses, bacteria or tumor cells.
Q2. Identify the figure of the contraceptive used for birth control
Answer : Option C
Explaination / Solution:
The birth control implant is a thin, flexible plastic implant about the size of a cardboard matchstick. It is inserted under the skin of upper arm. It protects against pregnancy for up to three years.
Q3. The lymph in frog lacks
Answer : Option B
Explaination / Solution:
The lymph is different from blood. It is known as tissue fluid. Lymph is yellowish in colour as it lacks RBCs and few proteins.
Q4.
Identify the virus in figure given below
Answer : Option B
Explaination / Solution:
A bacteriophage is a virus that infects and replicates within a bacterium.Bacteriophages are composed of proteins that encapsulate a DNA or RNA genome, and may have relatively simple or elaborate structures.
Q5. In deep lakes;littoral,limnetic and profundal zones represent:
Answer : Option C
Explaination / Solution:
In deep lakes differenet zones are formed according to availabilityof light, food and temperature. These zones are called littoral, limnetic and profundal zone. It is a kind of community stratification or separation.
Q6. Regurgitation is more common in infants than in adults. The reason will be:
Answer : Option C
Explaination / Solution:
Regurgitation is the expulsion of material from the pharynx, or esophagus, usually characterized by the presence of undigested food or blood. Regurgitation is used by a number of species to feed their young. Regurgitation is more common in infants than adults because cardiac sphincter is much less effective in infants.
Q7. The formation of both peptide and glycosidic bonds involves
Answer : Option C
Explaination / Solution:
In a polypeptide or a protein, amino acids are linked by a peptide bond which is formed when the carboxyl (-COOH) group of one amino acid reacts with the amino (-NH2) group of the next amino acid with theelimination of a water moiety (the process is called dehydration). In polysaccharide the individual monosaccharides are linked by a glycosidic bond. This bond is also formed by dehydration.
Q8. A metastatic cancerous tissue is termed ‘sarcoma’ if the disorder is in
Answer : Option A
Explaination / Solution:
A metastatic cancerous tissue is called sarcoma if the disorder is in fibroblast. The property of cancerous cells to reach from one part of the body to other through blood is called metastasis.
Q9. Select the incorrect matching
Answer : Option C
Explaination / Solution:
The nucleus contains the chromosomes which in turn contain the genetic material, DNA.
Q10. A gene of operon which synthesizes a repressor protein is
Answer : Option C
Explaination / Solution:
No Explaination.
