Zoology - Online Test
Q1. Exponential growth pattern in a population results into
Answer : Option D
Explaination / Solution:
Exponential growth pattern in population results into j-shaped curve. During exponential growth faster growth occurs and j-shaped curve is formed when time v/s growth is drawn.
Q2. Which layer of alimentary canal is formed of loose connective tissues?
Answer : Option D
Explaination / Solution:
The submucosa consists of a dense and irregular layer of loose connective tissue with blood vessels, lymphatics, and nerves branching into the mucosa and muscular layer. It contains the submucous plexus, and enteric nervous plexus, situated on the inner surface of the muscular layer.
Q3. Where memory cells are formed?
Answer : Option D
Explaination / Solution:
Memory cells are formed in lymphocytes of WBC. Immunization against the particular disease based on the function of memory cell induced due to mild, heat killed pathogen administrated during immunization.
Q4. Part of brain that acts as relay centre to receive and transmit general sensations except smell :
Answer : Option A
Explaination / Solution:
Thalamus is the part of brain that acts as relay centre to receiveand transmit general sensations except smell. Thalamus is located in the forebrain superior to the midbrain.
Q5. In prokaryotes, the reserved food material is stored in
Answer : Option B
Explaination / Solution:
Reserve material in prokaryotic cells are stored in the cytoplasm in the form of inclusion bodies.
Q6. What does A & B represent?
Answer : Option C
Explaination / Solution:
In figure above, A represent helicase and B represents single strand binding protein. These structures are formed during semi-conservative replication of DNA.
Q7. Conditions favouring decomposition are
Answer : Option C
Explaination / Solution:
Decomposition rate accelerate at high temperature and high humidity. At higher temperature and high humidity number of decomposer increases substantially that accelerate the decomposition.
Q8. After a forceful expiration :
Answer : Option B
Explaination / Solution:
After a forceful expiration gaseous exchange continues uninterrupted because there is always a residual volume of air that continues the diffusion of gasese.
Q9. Which one of the following is commonly used in transfer of foreign DNA into crop plants?
Answer : Option B
Explaination / Solution:
Genetically modified foreign DNA is transferred into crops plants through a vector. Agrobacterium tumefaciens is most common bacterium used for this purpose.
Q10. Identify the odd combination of the habitat and the particular animal concerned
Answer : Option D
Explaination / Solution:
Dachigam National Park is located 22 kilometers from Srinagar, Jammu and Kashmir. It covers an area of 141 km. The name of the park literally stands for "ten villages" which could be in memory of the ten villages that were relocated for its formation.
The main animal species that Dachigam is known for is the hangul, or the Kashmir stag.
