Science Biology MCQ-236

General Science-Biology Practice Test for RBI, CDS, UPSC, NDA, UPPSC, SSC, CivilsPrelims, JPSC Exams



How do most insects respire?

 
 
 
 

In human beings, normally in which one of the following parts, does the sperm fertilize the ovum?

 
 
 
 

Which one of the following parts of the human brain is the regulating centre for swallowing and vomiting?

 
 
 
 

Production of which one of the following is a function of the liver?

 
 
 
 

Which one of the following is not a digestive enzyme in the human system?

 
 
 
 

Which one of the following is the correct sequence in the order of decreasing length of the three structural parts given below of small intestine in the human body?

 
 
 
 

In which of the following kinds of organisms is the phenomenon found wherein the female kills the male after copulation?

 
 
 
 

For which one of the following snakes is the diet mainly composed of other snakes?

 
 
 
 

Assertion (A): In human body, liver has important role in fat digestion.
Reason (R): Liver produces two important fat-digesting enzymes.

 
 
 
 

Among the following, which one lays eggs and does not produce young ones directly?

 
 
 
 

The release of which one of the following into ponds and wells helps in controlling the mosquitoes?

 
 
 
 

Among the following, which one is not an ape?

 
 
 
 

In the context of genetic disorders, consider the following: A woman suffers from colour blindness while her husband does not suffer from it. They have a son and a daughter. In this context, which one of the following statements is most probably correct?

 
 
 
 

In the context of Indian wild life, the flying fox is a

 
 
 
 

With reference to the evolution of living organisms, which one of the following sequences is correct?

 
 
 
 

The Panda belongs to the same family as that of

 
 
 
 

The marine animal called Dugong which is vulnerable to extinction is

 
 
 
 

Widespread resistance of malarial parasite to drugs like chloroquine has prompted attempts to develop a malarial vaccine to combat malaria. Why is it difficult to develop an effective malaria vaccine ?

 
 
 
 

Consider the following statements.
1. Hepatitis B is several times more infectious than HIV/AIDS
2. Hepatitis B can cause liver cancer
Which of the statements given above is/ are correct?

 
 
 
 

At present, scientists can determine the arrangement or relative positions of genes or DNA sequences on a chromosome. How does this knowledge benefit us?
1. It is possible to know the pedigree of livestock.
2. It is possible to understand the causes of all human diseases.
3. It is possible to develop disease-resistant animal breeds.
Which of the statements given above is/are correct ?

 
 
 
 

Microbial fuel cells are considered a source of sustainable energy. Why?
1. They use living organisms as catalysts to generate electricity from certain substrates.
2. They use a variety of inorganic materials as substrates.
3. They can be installed in waste water treatment plants to cleanse water and produce electricity.
Which of the following statements given above is/ are correct?

 
 
 
 

Human activities in the recent past have caused the increased concentration of carbon dioxide in the atmosphere, but a lot of it does not remain in the lower atmosphere because of
1. its escape into the outer stratosphere.
2. the photosynthesis by phytoplankton in the oceans.
3. the trapping of air in the polar ice caps.
Which of the statements given above is/are correct?

 
 
 
 

In the context of ecosystem productivity, marine upwelling zones are important as they increase the marine productivity by bringing the
1. decomposer microorganisms to the surface.
2.nutrients to the surface.
3 bottom-dwelling organisms to the surface.
which of the statements given above is/are correct?

 
 
 
 

A company marketing food products advertises that its items do not contain trans-fats. What does this campaign signify to the customers ?
1. The food products are not made out of hydrogenated oils.
2. The food products are not made out of animal fats/oils.
3. The oils used are not likely to damage the cardiovascular health of the consumers.
Which of the statements given above is/are correct?

 
 
 
 

A married couple adopted a male child. A few years later, twin boys were born to them. The blood group of the couple is AB positive and O negative. The blood group of the three sons is A positive, B positive, and O positive. The blood group of the adopted son is?

 
 
 
 

Regular intake of fresh fruits and vegetables is recommended in the diet since they are a good source of antioxidants. How do antioxidants help a person maintain health and promote longevity?

 
 
 
 

Consider the following kinds of organisms
1. Bacteria
2. Fungi
3. Flowering plants
Some species of which of the above kinds of organisms are employed as biopesticides?

 
 
 
 

Which one of the following sets of elements was primarily responsible for the origin of life on the Earth?

 
 
 
 

Consider the following kinds of organisms:
1. Bat
2.Bee
3. Bird
Which of the above is/are pollinating agent/agents?