Zoology - Online Test
Q1. The statement incorrect about human heart is :
Answer : Option D
Explaination / Solution:
Human being is triploblastic. The different organs are evolved from different layers of foetus. Human heart is derived from mesoderm.
Q2. Spirulina is a
Answer : Option C
Explaination / Solution:
Spirulina is an Algae found in water. It is unicellular and rich in proteins. It is used as single cell protein as substitute of plant or animal protein.
Q3. Water bodies and aquatic flora will be badly affected by :
Answer : Option D
Explaination / Solution:
Acid rain is the rainwater that contain Sulphuric acid and Nitric acid. These acids make the water bodies acidic by changing pH. At higher pH aquatic organisms are badly affected.
Q4. Various phases of cell cycle are controlled by proteins
Answer : Option C
Explaination / Solution:
Cycline and CDKs can modify various protein substrates involved in cell cycle progression. Cancer results due to mutations of these proteins leading to uncontrolled cell divisions.
Q5. DNA is extracted by
Answer : Option C
Explaination / Solution:
The piece of DNA obtained by gel electrophoresis contains agrose gel also. Ethanol precipitation is a commonly used technique for concentrating and de-salting nucleic acids (DNA or RNA) preparations in aqueous solution. The basic procedure is that salt and ethanol are added to the aqueous solution, which forces the precipitation of nucleic acids out of solution.
Q6. Which of the following is not a part of glomerular filtrate?
Answer : Option A
Explaination / Solution:
Glomerular filtrate contains glucose, inorganic salts and creatinine but it do not contain globulins protein.
Q7. By studying analogous structures we look for
Answer : Option B
Explaination / Solution:
In evolutionary biology, the term analogous structures pertain to the various structures in different species having the same function but have evolved separately, thus do not share common ancestor.
Examples of analogous structures are as follows: wings of insects and birds used for flying
Q8. The number of species that are known and described is
Answer : Option A
Explaination / Solution:
Each different kind of plant, animal or organism represents a species. The number of species known and described ranges between 1.7-1.8 million. This refers to biodiversity or the number and types of organisms present on earth. Hence, the correct option is 1.7 – 1.8 million.
Q9. Which of the following hormones will stimulate gluconeogenesis?
Answer : Option B
Explaination / Solution:
Glucocorticoids stimulate gluconeogenesis. Similarly, glucagon also stimulates the process of gluconeogenesis which also contributes to hyperglycemia.
Q10. Myoglobin was the first protein to have its three-dimensional structure revealed. Ravi was diagnosed with myoglobin in his bloodstream. This had occurred due to :
Answer : Option C
Explaination / Solution:
Myoglobin is an iron and oxygen binding protein found in the muscle tissue of mammals. Presence of myoglobin in blood stream may be due to muscle injury of Ravi due to accident or sudden jerk.
