Zoology - Online Test
Q1. Ramesh has Rh antigen and Anti-A as well as Anti-B antibodies in his blood. During blood transfusion he can receive blood from :
Answer : Option D
Explaination / Solution:
Since he has both antibodies A and Band has Rh antigen and hence has O+ blood group. So, he can receive blood from O-positive blood group.
Q2. Biogas is produced by
Answer : Option A
Explaination / Solution:
Biogas is mixture of gases like methane, hydrogen and oxygen. It is produced by anaerobic breakdown of biomass like animal dung, animal wastes etc. It is used as fuel in rural areas.
Q3. Which of the following is a wrong matched pair
Answer : Option B
Explaination / Solution:
Dystrophic lake have too low accumulation of dissolved nutrients to support abundant plant life so, they have very low productivity.
Q4. Karyokinesis is the
Answer : Option E
Explaination / Solution:
Cell division consists of karyokinesis and cytokinesis. During karyokinesis division of chromosomes takes place and during cytokinesis division of cytoplasm takes place. Ultimately the cell divides into two halves.
Q5. The first restriction endonuclease discovered was
Answer : Option C
Explaination / Solution:
The first restriction endonuclease discovered was Hind II. Hind II always cut DNA molecules at a particular point by recognizing a specific sequence of six base pairs. This specific base sequence is known as the recognition sequence of Hind II.
Q6.
In human excretory system :
i. kidneys and ureters are paired structures but urinary bladder is single.
ii. Kidneys are situated between the levels of last thoracic and third lumbar vertebra.
Answer : Option D
Explaination / Solution:
The excretory system in human consistsof a pair of kidneys, one pair of ureters, aurinary bladder and a urethra. Kidneys are reddish brown, bean shaped structures situated between the levels of last thoracic and third lumbarvertebra close to the dorsal inner wall of the abdominal cavity.
Q7. Which of the following bird will be called most successfully evolved?
Answer : Option A
Explaination / Solution:
An organism that lays 5 eggs, hatch the 5 eggs to reproduce 5 offspring can be considered as most evolved out of the other given condition. Least evolved organism lays more egg but produce only a few offspring.
Q8. In a scientific name, the name of the author is printed in
Answer : Option B
Explaination / Solution:
Name of the author appears after the specific epithet, i.e., at the end of the biological name and is written in an abbreviated form, e.g., MangiferaindicaLinn. It indicates that this species was first described by Linnaeus. Hence, the correct option is Abbreviated.
Q9. Which of the following statements is/are incorrect about sliding filament theory of muscle contraction?
Answer : Option B
Explaination / Solution:
During contraction, the ‘I’ bands get reduced, whereas the ‘A’ bands retain the length.
Q10. Expand RIA
Answer : Option C
Explaination / Solution:
Radioimmunoassay (RIA) is a very sensitive in vitro assay technique used to measure concentrations of antigens (for example, hormone levels in blood) by use of antibodies. As such, it can be seen as the inverse of a radiobinding assay, which quantifies an antibody by use of corresponding antigens
