The growth curve of bacterial population in lab is plotted against time. What will be the shape of graph
Sigmoid
Hyperbolic
Ascending straight line
Descending straight line
B.
Hyperbolic
Under continuous supply of food and spacein the laboratory conditions the bacterial population grows exponentially and shows a Jshaped curve, thus the curve would be hyperbolic.
Such populations ultimately crash when the population size grows beyond carrying capacity.
Assertion: Koel does not build nest for egg laying.
Reason: Koel lays its eggs in the nest of tailor bird.
If both assertion and reason are true and reason is the correct explanation of assertion
If both assertion and reason are true but reason is not the correct explanation of assertion
If assertion is true but reason is falsen
If both assertion and reason are false.
Assertion: Persons suffering from haemophilia fail to produce blood clotting factor VIII.
Reason: Prothrombin producing platelets in such persons are found in very low concentration.
If both assertion and reason are true and reason is the correct explanation of assertion
If both assertion and reason are true but reason is not the correct explanation of assertion
If assertion is true but reason is false
If both assertion and reason are false.
Assertion: Hybridoma cells are shifted to a medium deficient in nutrient which cannot be synthesized by myeloma cells.
Reason: This medium allows selection of hybridoma cells.
If both assertion and reason are true and reason is the correct explanation of assertion
If both assertion and reason are true but reason is not the correct explanation of assertion
If assertion is true but reason is false
If both assertion and reason are false.
Assertion: Maize is an albuminous seed.
Reason: Endosperm is completely absorbed by its growing embryo
If both assertion and reason are true and reason is the correct explanation of assertion
If both assertion and reason are true but reason is not the correct explanation of assertion
If assertion is true but reason is false
If both assertion and reason are false.
Assertion: Many plants are propagated vegetatively even though they bear seeds.
Reason: Potatoes multiply by tubers and apple by cutting.
If both assertion and reason are true and reason is the correct explanation of assertion
If both assertion and reason are true but reason is not the correct explanation of assertion
If assertion is true but reason is false
If both assertion and reason are false.
Assertion: Nuclear endosperm is formed by subsequent nuclear division without wall formation.
Reason: Coconut is an example of such endosperm, where the endosperm remains nuclear throughout the development of the fruit
If both assertion and reason are true and reason is the correct explanation of assertion
If both assertion and reason are true but reason is not the correct explanation of assertion
If assertion is true but reason is false
If both assertion and reason are false.
Assertion: In mammals the female secondary sexual characters are developed by gonadotropins.
Reason: Gonadotropins are secreted by graafian follicle.
If both assertion and reason are true and reason is the correct explanation of assertion
If both assertion and reason are true but reason is not the correct explanation of assertion
If assertion is true but reason is false
If both assertion and reason are false.
Assertion: The plant biomass which serves as the food of herbivores and decomposers is said to result from the gross primary productivity.
Reason: Gross primary productivity is the rate of net production of organic material (biomass).
If both assertion and reason are true and reason is the correct explanation of assertion
If both assertion and reason are true but reason is not the correct explanation of assertion
If assertion is true but reason is false
If both assertion and reason are false
Assertion: Dimethyl mercury is a highly persistent pollutant that accumulates in food chains.
Reason: Mercury pollution is responsible for minamata.
If both assertion and reason are true and reason is the correct explanation of assertion
If both assertion and reason are true but reason is not the correct explanation of assertion
If assertion is true but reason is false
If both assertion and reason are false.