Biology - Biology and Human Welfare
Exam Duration: 45 Mins Total Questions : 30
Cerebral malaria is caused by
- (a)
Plasmodium vivax
- (b)
Plasmodium ovale
- (c)
Plasmodium malariae
- (d)
Plasmodium falciparum
An insect bite may result in inflammation of that spot.This is triggered by the alarm chemicals such as
- (a)
histamine and dopamine
- (b)
histamine and kinins
- (c)
interferons and opsonin
- (d)
interferons and histones
Industrial production of ethanol from starch is brought about by a certain species of
- (a)
Azotobacter
- (b)
Lactobacillus
- (c)
Saccharomyces
- (d)
Pencillium
Consider the following four statements (i-iv) and select the option which includes all the correct ones only.
(A) Single cell spirulina can produce large quantities of food rich in protein, minerals, vitamins ete.
(B) Body weight -wise the microorganism Methylophilus methylotrophus may be able to produce several times more proteins than the cows per day
(C) common button mushrooms are a very rich source of vitamin C.
(D) A rice variety has been developed which is very rich in calcium
- (a)
Statements (C), (D)
- (b)
Statements (A), (C), (D)
- (c)
Statements (B), (C), (D)
- (d)
Statements (A), (B)
Which of the following enzyme is used for leather tanning?
- (a)
Pectinase
- (b)
Proteases
- (c)
Oxidases
- (d)
Lipase
Choose the correct statement about bioinsecticides.
(a) Predator bug is used to control sugarcane leaf hopper in Hawaii
(b) Bacillus papillae and B. lentimorbus mixture is called doom
(c) Boverin is an effective fungus against citrus rust mite
- (a)
(a) only
- (b)
(b) only
- (c)
(a) and (b)
- (d)
(a) and (c)
Trichoderma harzianum has proved a useful microorganism for
- (a)
biological control of soil - brone plant pathogens
- (b)
bioremedication of contaminated soils
- (c)
reclamation of wastelands
- (d)
gene transfer In higher plants
Baculoviruses are/have
- (a)
pathogens that attack insects and other arthropods
- (b)
members of genus Nucleopolyhedrovirus that are never used as biocontrol
- (c)
species - specific, bread spectrum insecticides
- (d)
few negative impacts on plants, mammals, birds, fishes or even on non-target insects
Mark the mismatched pair:
- (a)
Dragon fly ---- Biocontrol agent
- (b)
Oscillatoria ---- Increase alkalinity of soil
- (c)
Anaerobic sludge digester ---- Biogas
- (d)
VAM ---- Biofertilizer
The common nitrogen fixer in paddy fields is
- (a)
Rhizobium
- (b)
Azospirillum
- (c)
Oscillatoria
- (d)
Frankia
Ringworm in humans is caused by
- (a)
bacteria
- (b)
fungi
- (c)
nematodes
- (d)
viruses
Select the correct statement from the ones given below.
- (a)
Barbiturates when given to criminals make them tell the truth
- (b)
Morphine is often given to persons who have under gone surgery as a pain kille
- (c)
Chewing tobacco lowers blood pressure and heart rate
- (d)
Cocaine is given to patients after surgery as it stimulates recovery
The long-term prospects for a truly human civilisation depend in a large measure on
- (a)
the ability of humanity to moderate its fecundity
- (b)
increasing the food production
- (c)
colonisation of under populated areas
- (d)
control of human diseases
If you suspect major deficiency of antibodies in a person, to which of the following would you look for confirmatory evidence?
- (a)
Serum albumins
- (b)
Serum globulins
- (c)
Fibrinogen in plasma
- (d)
Haemocytes
Which of the following will be curable in next two decades?
- (a)
tuberculosis
- (b)
cancer
- (c)
polio myelitis
- (d)
None of these
High milk yielding cross bred Frieswal cow is the product of
- (a)
Brown Swiss\(\times\) Sahiwal
- (b)
Friesian \(\times\) Sahiwal
- (c)
Holstein\(\times\)Tharparkar
- (d)
Brown Swiss \(\times\)Red sindhi.
Hairy leaves of many plants are associated with
- (a)
resistance to insect pests
- (b)
resistance to viruses
- (c)
resistance to fungi
- (d)
resistance to bacteria
Study the following statements regarding lactic acid bacteria (LAB) which are used to convert milk into curd
(i) They produce acids that coagulate and partially digest the milk proteins.
(ii) A small amount of curd added to the fresh milk as an inoculum contains millions of LAB, which at suitable temperature, multiply and convert milk into curd.
(iii) Conversion of milk into curd improves its nutritional quality by increasing vitamin B12.
(iv) LAB may result in acidity in the stomach of human beings.
Which of the given statements are correct?
- (a)
(i) and (ii)
- (b)
(ii) and (iii)
- (c)
(i), (ii) and (iii)
- (d)
(i), (ii), (iii) and (iv)
Somaclones are
- (a)
somatic hybrids
- (b)
genetically identical to the original plant
- (c)
used to recover disease free plants
- (d)
sterile plants
Bacillus thuringiensis (Bt) strains have been used for designing novel
- (a)
biofertilisers
- (b)
bio-metallurgical techniques
- (c)
bio-mineralisation process
- (d)
bio-insecticidal plants.
In the following question, a statement of assertion is followed by a statement of reason. Mark the correct choice as :
Assertion: Nucleic acid complexes alone cannot cause diseases.
Reason: Only nucleoproteins can function as infectious agents.
- (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.
Assertion: Single cell proteins can help to meet increasing demands of growing population.
Reason: SCP now can be produced in high amount commercially, using low cost substrates.
- (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
Which of the following bacterium is associated with production of bioinsecticide is?
- (a)
Bacillus aubstills
- (b)
Bacillus thuringgensis
- (c)
Agrobacterium
- (d)
Azotobactor
Yeast is used in the production of:-
- (a)
Bread and beer
- (b)
Cheese and butter
- (c)
Citric acid and lactic acid
- (d)
Lipase and pectinase
Which of the following physical mutagen is used for including mutations in plants?
- (a)
X - rays
- (b)
Sodium azide
- (c)
Gamma rays
- (d)
Ethyl methane sulphonate
Which of the following is wrongly matched in the given table?
- (a)
Microbe Product Application Clostridium butylicum Lipase removal of oil stains - (b)
Microbe Product Application trichoderma polysporum Cyclosporin A immunosuppressive drug - (c)
Microbe Product Application Monascus Purpureus Statins Lowering of blood cholestrerol - (d)
Microbe Product Application Streptococcus Streptokinase removal of clot from blood vessel
Bacillus anthracis causes
- (a)
Rhinderpest
- (b)
Tick fever
- (c)
Anthrax
- (d)
Diarrhoea
In dairy farm management, we deal with processes and systems that increase yield and improve quality of milk. Which of the following statement is incorrect in this regard?
- (a)
Milk yield is primaruy dependent on the quality of milk, therefore selection of high yielding breed is very important.
- (b)
The quality and quantity of fodder provided to cattle do nut contribute much to the milk yield
- (c)
Cleanliness and hyqiene both of the cattle and handlers are of paramount importance while milking, storage and transport of the milk and its products
- (d)
Regular inspections, visits by a veterinary doctor with proper record keepirg help identify and rectify the problems of cattle as early as possible thus ensuring a proper milk yield
The causative agent of mad-cow disease is a
- (a)
Bacterium
- (b)
Prion
- (c)
Worm
- (d)
Virus
White revolution is associated with enhancement of
- (a)
Fish Production
- (b)
Egg Production
- (c)
Milk Production
- (d)
Wheat ann rice Production