Zoology - Online Test
Q1. Antibodies are formed by
Answer : Option D
Explaination / Solution:
Antibodies are formed against any foreign body entering the body. It is formed by plasma cell, globulins that develop resistance against particular type of disease.
Q2. Which among the following is not included in the three domains system?
Answer : Option A
Explaination / Solution:
The three domain system includes Archaebacteria, Eubacteria and Bacteria domain.
Q3. “In Competition, the superior competitor eliminates the inferior one”, this statement is called:
Answer : Option B
Explaination / Solution:
In competition, superior competitor eliminates the inferior one. This statement is called Gause’s competitive exclusion principle. Two closely related competing for same resources cannot co-exist indefinitely and inferior will be eliminated.
Q4. Which layer of alimentary canal forms crypts in between the base of villi?
Answer : Option C
Explaination / Solution:
Mucosa forms gastric glands in the stomach and crypts in between the bases of villi in the intestine (crypts of Lieberkuhn).
Q5. AIDS day is
Answer : Option B
Explaination / Solution:
World AIDS Day, designated on 1 December every year since 1988, is dedicated to raising awareness of the AIDS pandemic caused by the spread of HIV infection, and mourning those who have died of the disease.
Q6. The space within cochlea called scala media is filled with
Answer : Option B
Explaination / Solution:
Cochlear duct or scala media has endolymph and high potassium ion concentration that the stereocilia of the hair cells protrude into helicotrema.
Q7. The nucleus was first described by
Answer : Option B
Explaination / Solution:
Nucleus as a cell organelle was first described by Robert Brown as early as 1831.
Q8. Codon is made up of
Answer : Option A
Explaination / Solution:
A codon is a sequence of three DNA or RNA nucleotides that corresponds with a specific amino acid or stop signal during protein synthesis. A codon is a triplet.
Q9.
Read the following statements :
i. Pressure contributed by and individual gas in a mixture of gases is called its partial pressure
ii. in alveolar air is 45 mm Hg and in venous blood is 40 mm Hg.
Answer : Option A
Explaination / Solution:
- In a mixture of gases, each gas has a partial pressure which is the hypothetical pressure of that gas if it alone occupied the entire volume of the original mixture at the same temperature. The total pressure of an ideal gas mixture is the sum of the partial pressures of each individual gas in the mixture.
- The in alveolar air is 40 mm Hg and in venous blood is 45 mm Hg.
Q10. Which of the following fungi is used as food
Answer : Option A
Explaination / Solution:
Mushrooms are eaten by many people and large scale mushroom culture is a growing industry. It is a rich source of protein and other micronutrients.
