Biology in Human Welfare Online Test

Introduction of food plants developed by genetic engineering is not desirable because
economy of developing countries may suffer
these products are less tasty as compared to the already existing products
this method is costly
there is danger of entry of viruses and toxins with introduced crop
What is the step pH of soil for cultivation of plants?
3.4 - 5.4
6.5 - 7.5
4.5 - 8.5
5.6 - 6.5
The new varieties of plants are produced by
selection and hybridization
mutation and selection
introduction and mutation
selection and intro
The first transgenic crop was
Lathyrism which is caused by consumption of kesridal is a disease characterised by
reproductive failure, susceptibility to diabetes mellitus and skeletal abnormalities
retardation of body growth, precocious puberty and renal dysfunction
mental retardation, delay in the onset of puberty and cardiovascular abnormalities
gross skeletal deformation and thinning of collagen fibres and fibrils
The reason why vegetatively reproducing crop plants are best suited for maintaining hybrid vigour is that
once a desired hybrid has been produced there are few chances of losing it
they have a longer life span
they are more resistant to diseases
they can be easily propagated
The use of Cannabis products (bhang , ganja, charas, marijuana or hashish) causes
depression of brain activity and feeling of calmness
alters thoughts, perceptions and feelings
suppresses brain function and relieves pain
stimulates the nervous system and increases alterness and activity.
Which of the following is likely to be achieved in the coming two decades?
A complete understanding of the brain– mind interaction
Control of cancer
Correction of genetic basis of diabetes mellitus
Production of biodegradable plastic rather than cellulose by higher plants
Two microbes found to be very useful in genetic engineering are
Vibrio cholerae and a tailed bacteriophage
Diplococcus sp. and pseudomonas sp.
Crown gall bacterium and Caenorhabditis elegans
Escherichia coli and Agro bacterium tumefaciens
Farmers in a particular region were concerned that pre- mature yellowing of leaves of a pulse crop might cause decrease in the yield. Which treatment could be most beneficial to obtain maximum seed yield?
Treatment of the plants with cytokinins along with a small dose of nitrogenous fertilizer
Removal of all yellow leaves and spraying the remaining green leaves with 2,4,5- trichlorophenoxy acetic acid
Application of iron and magnesium to promote synthesis of chlorophyll
Frequent irrigation of the crop
Crop plants grown in monoculture are
free from intraspecific competition
characterised by poor root system
highly prone to pests
low in yield
In order to obtain virus- free plants through tissue culture the best method is
Embryo rescue
Anther culture
Meristem culture
Protoplast culture
The world’s highly prized wool yielding ‘Pashmina’ breed is:
goat- sheep cross
Kashmir sheep- Afghan sheep cross
The name of Norman Borlaug is associated with :
White Revolution
Green Revolution
Yellow Revolution
Blue Revolution
An important step in the manufacture of pulp for paper industry from the woody tissues of plants is the:
preparation of pure cellulose by removing lignin
treatment of wood with chemicals that break down cellulose
removal of oils present in the wood by treatment with suitable chemicals
removal of water from the wood by prolonged heating at approximately 50°C
Three crops that contribute maximum to global food grain production are:
Wheat, rice and maize
Wheat, rice and barley
Wheat, maize and sorghum
Rice, maize and sorghum
Golden rice is a transgenic crop of the future with the following improved trait:
insect resistance
high lysine (essential amino acid) content
high protein content
high vitamin-A content
Which one thing is not true about antibiotics?
The term “antibiotic” was coined by Selman Waksman in 1942
First antibiotic was discovered by Alexander Flemming
Each antibiotic is effective only against one particular kind of germ
Some persons can be allergic to a particular antibiotic
The technique of obtaining large number of plantlets by tissue culture method is called
Plantlet culture
Organ culture
Micro propagation
Macro propagation

This test covers the questions from Biology for AIPMT



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