Zoology - Online Test
Q1. Inter kinesis is followed by which type of cell division that helps in regeneration?
Answer : Option C
Explaination / Solution:
The stage between the two meiotic divisions is called interkinesis and is generally short lived. Interkinesis is followed by prophase II, a much simpler prophase than prophase I.
Q2. Which of the following is used as selectable marker?
Answer : Option D
Explaination / Solution:
The Ampicillin resistance gene is used as selectable marker as it prevents the growth of non-transformants cells and promotes the growth of transformants only
Q3. Dev consumes large amount of alcohol and result is polyuria and dehydration due to :
Answer : Option B
Explaination / Solution:
Polyuria is usually the result of drinking excessive amounts of fluids (polydipsia), particularly water and fluids that contain caffeine or alcohol. Person suffering from polyuria may develop excessive production of urea and suffer from dehydration due to decrease in level of antiduretic hormone or vasopressin.
Q4. Vermiform appendix in man, nictitating membrane and wisdom teeth are
Answer : Option B
Explaination / Solution:
Vermiform appendix in man, nictitating membrane and wisdom teeth are vestigial organs of human beings. These organs are functional in our ancestors but in present human beings they have become functionless and only present as remain.
Q5. A true species consist of a population
Answer : Option C
Explaination / Solution:
A true species consists of a population which is reproductively isolated. Populations of a species can interbreed among themselves and not with the other populations.
Q6. Dead parts of plants and animals that fall on the earth surface constitute
Answer : Option D
Explaination / Solution:
Dead parts of plants and animals that fall on earth surface constitute litter. These litter get decomposed due to action of microbes to form humus and release nutrients in soil.
Q7.
During vigorous exercise :
i. lactic acid accumulates in muscle cells to meet its energy needs immediately.
ii. lactic acid is formed by anaerobic respiration hence oxygen consumption by muscles is reduced.
iii. This reduction in oxygen consumption is called oxygen debt of muscle.
Answer : Option D
Explaination / Solution:
During vigorous exercise, lactic acid accumulates in muscles cells to meet the energy requirement of muscle cell. Lactic acid is formed due to insufficient availability of oxygen.
Q8. Gene transfer in biotechnology can be done by
Answer : Option C
Explaination / Solution:
Gene transfer in biotechnology can be done by number of methods. Microinjection is the use of a glass micropipette to inject a liquid substance at a microscopic or borderline macroscopic level. The target is often a living cell but may also include intercellular space.
Microinjection is one of the best methods to transfer desired gene into suitable host.
Q9. Which of the following is mechanical barrier used for birth control
Answer : Option C
Explaination / Solution:
Diaphragm is mechanical barrier used for birth control. It is made up of rubber and prevents meeting of sperm and ovum.
Q10. Mature erythrocytes cannot utilise glucose because they lack
Answer : Option D
Explaination / Solution:
Mature erythrocytes or red blood corpuscles cannot utilize glucose because these cells lack mitochondria as well as nucleus. Though glycolysis or glucose breakdown occurs in the cytoplasm, the final breakdown of pyruvate takes place inside mitochondria. Also the electron transport chain is located inside mitochondria. Hence presence of mitochondria is essential for a cell to utilize glucose and release energy.
