Zoology - Online Test
Q1. Technique associated with DNA amplification is
Answer : Option C
Explaination / Solution:
DNA amplification is done by using the technique of polymerase chain reaction in which millions of copies of DNA segments are produced.
Q2. Reema is on dialysis and she is unable to conceive due to high levels of waste products in her body fluids. Her doctor can suggest her
Answer : Option A
Explaination / Solution:
When both kidney of a person get damaged and not able to filter the blood, dialysis is used to remove nitrogenous wastes. High wastes accumulation unable a woman to conceive. The ultimate solution to this problem is kidney transplant.
Q3. Assertion: Organic evolution explains that new species originated from pre-existing life forms and there is gradual variation in trait to adjust in particular habitats.
Reason: existing living forms share similarities to various degrees among themselves and also with life forms that existed millions of years ago.
Reason: existing living forms share similarities to various degrees among themselves and also with life forms that existed millions of years ago.
Answer : Option C
Explaination / Solution:
Organic evolution are the events involved in the evolutionary development of a species. It means that all life descended from other life, although features may have changed dramatically along the way.
Charles Robert Darwin collected the observations on animal distribution and the relationship between living and extinct animals. He found that existing living forms share similarities to varying degrees not only among themselves but also with the life forms that existed millions of years ago, some of which have become extinct.
Q4. The housefly belong to order
Answer : Option D
Explaination / Solution:
Houseflies are insects of the order Diptera, the name being derived from the Greek di = two, and ptera = wings
Q5. An ecological succession on bare land proceeds towards
Answer : Option B
Explaination / Solution:
An ecological succession on bare land proceeds towards increasing wetness. Availability of water help in faster growth of organism including plants.
Q6.
Read the following about joint replacement therapy :
i. Artificial joints are made from the similar material that makes our bones.
ii. Metal or plastic is used to prepare an artificial joint.
iii. Following figure shows a disfunctional joint in the knee.
iv. Above figure shows an artificial joint in the knee.
Answer : Option D
Explaination / Solution:
Artificial joints are made up of metal and plastic. The figure shown above shows artificial joint in the knee.
Q7. Bio-weapons are conventionally used by terrorists as they are
Answer : Option B
Explaination / Solution:
Bio-weapons are conventionally used by terrorists as they are invisible and extremely difficult to detect. It includes addition of microbes in water, food etc. that can cause disease in large number of people.
Q8. Contraceptive pills are taken for _______ days starting from 5th day menstruation
Answer : Option C
Explaination / Solution:
Contraceptive pills are taken for 21days starting from 5th day of menstruation. They increase the female hormone levels to obstruct in ovulation process.
Q9. Which layer produces new cell by mitosis?
Answer : Option C
Explaination / Solution:
Stratum Malpighi is the basal layer of skin epidermis having basal layer and generative layer that produces new cells by mitosis.
Q10. Sexual reproduction is by copulation of male and female followed by embryological development is characteristic feature of
Answer : Option D
Explaination / Solution:
The sexual reproduction in kingdom Animalia is by copulation of male and female followed by embryological development.
