Increase in toxic concentration from one trophic level to another trophic level is called
ecological toxification
bio- magnification
bioconcentration
cytological effect
B.
bio- magnification
The phenomenon through which certain pollutants (toxic substances) get accumulated in trophic level in increasing concentrations along the different trophic level is called biological magnification or ecological magnification.
Bioconcentration is the process by which a chemical concentration in an aquatic organism exceeds in water as a result of exposure to a waterborne chemical.
The water logging capacity of garden soil will be determined by measuring the weight of
soil by adding water and humus
water saturated soil then heating the soil till it is dry and then measuring the weight of soil
soil by adding water, biomass and humus
soil from different locations with biomass.
Which of the following is used as bioinsecticide?
Bacillus polymyxa
Cylindrospermum licheniforme
Phytophthora palmivora
Chrysanthemum cinerarifolium
Match column I with column II and select the correct option from the codes given below.
| Column I | Column II |
| A. Commensalism | (i) One inhibited, other unaffected |
| B. Parasitism | (ii) One benefitted, other unaffected |
| C. Mutualism | (iii) Both are benefitted |
| D. Amensalism | (iv) One benefitted, other harmed |
A - (iv), B - (ii), C- (iii), D - (i)
A - (iii), B - (iv), C - (ii), D - (i)
A - (ii), B - (iv), C - (iii), D - (i)
A - (ii), B - (iv), C - (i), D - (iii)
When a natural predator (living being) is applied on the other pathogen organism to control them, this process is called
biological control
genetic engineering
artificial control
confusion technique
Enzyme and carbohydrates dominate in the digestive tract of
carnivores
omnivores
parasites
herbivores
Which of the following workers are related as ecologist, palaeobotanist and embryologist respectively?
B. Salmi, R. Mishra, P. Maheshwari
R Mishra, B. Sahni, P. Maheshwari
B. Sahni, P. Maheshwari, R Mishra
P. Maheshwari, R Mishra, B. Sahni
