Home
Entrance Exams
Medical Entrance Exam
OTI365 - Medical Jipmer
JIMPER Biology - Biology and Human Welfare Practice Questions with Answer

Biology - Biology and Human Welfare

Exam Duration: 45 Mins Total Questions : 30

1 )

Flit is used for the large scale on control of malaria.The main constituent of flit is

(a)
malathion
(b)
atrazine
(c)
aldrin
(d)
dialdrin

2 )

The term 'humulin' is used for

(a)
human insulin synthesised using rDNA
(b)
isoenzyme
(c)
chemically synthesised hormone
(d)
human antibodies

3 )

The Genetically Modified(GM) brinjal in India has been developed for

(a)
insect-resistance
(b)
enhancing self life
(c)
enhancing mineral content
(d)
drought resistance

4 )

Which of the following is generally used for induced mutagenesis in crop plants?

(a)
x-rays
(b)
uv (260 nm)
(c)
Gamma rays (from cobalt 60)
(d)
Alpha particles

5 )

Domestication of honey-bees is called

(a)
Sericulture
(b)
Apiculture
(c)
Horticulture
(d)
Pisciculture

6 )

Secondary sewage treatment is mainly a

(a)
biological process
(b)
physical process
(c)
mechanical process
(d)
chemical process

7 )

Which of the following fern is an excellent biofertiliser?

(a)
Marsilea
(b)
Pteridium
(c)
Azolla
(d)
Salvinia

8 )

Monascus purpureus is a yeast used commercially in the production of

(a)
Citric acid
(b)
Blood cholesterol lowering statins
(c)
Ethanol
(d)
Streptokinase for removing clots from the blood vessels

9 )

In order to obtain virus-free plants through tissue culture the best method is

(a)
meristem culture
(b)
protoplast culture
(c)
embryo rescue
(d)
anther culture

10 )

During sewage treatment, biogases are produced, which include

(a)
methane, hydrogen sulphide and carbon dioxide
(b)
methane, oxygen and hydrogen sulphide
(c)
hydrogen sulphide, methane and sulphur dioxide
(d)
hydrogen sulphide, nitrogen and methane

11 )

Which one among the following chemicals is used for causing defoliation of forest trees?

(a)
Amo-1618
(b)
Phosphon-D
(c)
Maleic hydrazide
(d)
2, 4-D

12 )

Which one of the following is the -correct statement regarding the particular' psychotropic drug specified?

(a)
Hashish causes alter thought perceptions and hallucinations
(b)
Opium stimulates nervous system and causes hallucinations
(c)
Morphine leads to delusions and disturbed emotions
(d)
Barbiturates cause relaxation and temporary euphoria

13 )

A person showing unpredictable moods, outbursts of emotion, quarrelsome behaviour and conflicts with others is suffering from

(a)
schizophrenia
(b)
Borderline Personality Disorder (BPD)
(c)
mood disorders
(d)
addictive disorders

14 )

Reason of lung cancer is

(a)
coal mining
(b)
calcium fluoride
(c)
cement factory
(d)
bauxite mining

15 )

Small proteins produced by vertebrate cells naturally in response to viral infections and which inhibit multiplication of viruses are called

(a)
immunoglobulins
(b)
interferons
(c)
antitoxins
(d)
lipoproteins

16 )

Which of the following diseases is due to an allergic reaction?

(a)
Goitre
(b)
Skin cancer
(c)
Hay fever
(d)
Enteric fever

17 )

Germplasm collection is the collection of

(a)
germ cells
(b)
semens
(c)
plants/seeds with all the diverse alleles for all genes
(d)
egg cells

18 )

Match column I with column II and select the correct answer from the given codes.

Column I	Column II
A. Methanogens	(i) BOD
B. Fermentors	(ii) Methane rich fuel gas
C. Organic waste in water	(iii) Production of methane
D. Biogas	(iv) Large vessels for growing microbes

(a)
A - (ii), B - (iv), C - (iii), D - (i)
(b)
A - (iv), B - (iii), C - (ii), D - (i)
(c)
A - (ii), B - (i), C - (iv), D - (iii)
(d)
A - (iii), B - (iv), C - (i), D - (ii)

19 )

A group of animals which are related by descent and share many similarities are referred to as

(a)
breed
(b)
race
(c)
variety
(d)
species.

20 )

Biogas is produced by

(a)
aerobic breakdown of biomass
(b)
anaerobic breakdown of biomass
(c)
with the help of methanogenic bacteria
(d)
both (b) and (c).

21 )

Which one of the following microorganisms forms symbiotic association with plants and helps them in their nutrition?

(a)
Glomus
(b)
Azotobacter
(c)
Klebsiella
(d)
Azospirillum

22 )

Which of the following statements is/are correct?

(a)
In paddy fields, cyanobacteria serve as an important biofertiliser.
(b)
Vermicompost consists of organic matter prepared by the action of earthworms on human or animal waste.
(c)
The important examples of cyanobacteria as biofertilisers are Anabaena, Nostoc and Oscillatoria.
(d)
All of these

23 )

Study the given differences between primary sludge and activated sludge and select the incorrect ones.

	Primary sludge	Activated sludge
(i)	It is sludge formed during primary sewage treatment.	It is sludge formed during secondary sewage treatment
(ii)	It possesses flocs of decomposer microbes	It does not possess flocs of decomposer microbes.
(iii)	It does not require aeration.	Formation of activated sludge requires aeration,
(iv)	A lot of decomposition occurs during formation of primary sludge.	Very little decomposition occurs during formation of activated sludge.

(a)
(i) and (ii)
(b)
(ii) and (iv)
(c)
(i), (iii) and (iv)
(d)
(ii) and (iii)

24 )

In the following question, a statement of assertion is followed by a statement of reason. Mark the correct choice as :
Assertion: Acetic acid production involves both aerobic and anaerobic processes.
Reason: Production of alcohol from glucose is an aerobic process and production of acetic acid from alcohol is an anaerobic process

(a)
If both assertion and reason are true and reason is the correct explanation of assertion
(b)
If both assertion and reason are true but reason is not the correct explanation of assertion
(c)
If assertion is true but reason is false.
(d)
If both assertion and reason are false.

25 )

Assertion: Artificial insemination is very economical method.
Reason: Fewer sperms are required in artificial insemination.

(a)
If both assertion and reason are true and reason is the correct explanation of assertion.
(b)
If both assertion and reason are true but reason is not the correct explanation of assertion.
(c)
If assertion is true but reason is false.
(d)
If both assertion and reason are false.

26 )

Protoplast is

(a)
another name for protoplasm
(b)
an animal cell
(c)
a plant cell without a cell wall
(d)
a plant cell

27 )

saccharomyces cerevisiae is used in the formation

(a)
Ethanol
(b)
Methanol
(c)
Acetic acid
(d)
Antibiotics

28 )

Biogas contains

(a)
30% - 40% methane
(b)
50% - 70% CO₂
(c)
50% - 70% methane
(d)
20% methane

29 )

Assertion:- Bacteria farming is very benifical for farmers to increase crop production
Reason:-Bacteria,fungi, mycorrhiza, cyanobacteria are better biofertilizer which fix nitrogen and increase soil fertillity.