Which one of the following population interactions is widely used in medical science for the production of antibiotics?
Commensalism
Mutualism
Amensalism
Parasitism
C.
Amensalism
Amensalism/Antibiosis (0, –)
Antibiotics are chemicals secreted by one microbial group (eg : Penicillium) which harm other microbes (eg :Staphylococcus)
It has no effect on Penicillium or the organism which produces it.
Which of the following options correctly represents the lung conditions in asthma and emphysema, respectively?
Inflammation of bronchioles; Decreased respiratory surface
Increased number of bronchioles;Increased respiratory surface
Decreased respiratory surface;Inflammation of bronchioles
Increased respiratory surface;Inflammation of bronchioles
Which of the following is not an autoimmune disease?
Psoriasis
Rheumatoid arthritis
Vitiligo
Alzheimer's disease
In which disease does mosquito-transmitted pathogen cause chronic inflammation of lymphatic vessels?
Elephantiasis
Ascariasis
Amoebiasis
Ringworm disease
All of the following are included in ‘ex-situ conservation’ except
Wildlife safari parks
Sacred groves
Seed banks
Botanical gardens
Which of the following characteristics represent ‘Inheritance of blood groups’ in humans?
a. Dominance
b. Co-dominance
c. Multiple allele
d. Incomplete dominance
e. Polygenic inheritance
b, c and e
a, b and c
a, c and e
b, d and e
In a growing population of a country,
pre-reproductive individuals are more than the reproductive individuals
reproductive individuals are less than the post-reproductive individuals.
pre-reproductive individuals are less than the reproductive individuals.
reproductive and pre-reproductive individuals are equal in number.
Match the items given in Column I with those in Column II and select the correct option given below :
Column I | Column II | ||
a | Eutrophication | i | UV-B radiation |
b | Sanitary landfill | ii | Deforestation |
c | Snow blindness | iii | Nutrient enrichment |
d | Jhum cultivation | iv | Waste disposal |
a | b | c | d |
ii | i | iii | iv |
a | b | c | d |
i | iii | iv | ii |
a | b | c | d |
i | ii | iv | iii |
a | b | c | d |
iii | iv | i | ii |
The similarity of bone structure in the forelimbs of many vertebrates is an example of
Homology
Analogy
Adaptive radiation
Convergent evolution