The type of ecological pyramid that can be inverted in a parasitic food chain is the:
A. Pyramid of numbers
B. Pyramid of productivity
C. Pyramid of biomass
D. Pyramid of energy
Answer: Option A
Solution (By JKExamLibrary)
A pyramid of numbers can be inverted when a single tree (producer) supports many herbivores, or many parasites live on a single host. Energy pyramids are always upright. Biomass pyramid can be inverted in aquatic systems.
Explanation:
Trypsinogen, secreted by the pancreas, is activated to trypsin by enterokinase (intestinal enzyme). Trypsin then activates other zymogens. Pepsin is active in the stomach, rennin in infants, amylase digests starch. This cascade prevents premature protein digestion in the pancreas.
Explanation:
Blood group O lacks A and B antigens on red cells but contains both anti-A and anti-B antibodies in plasma. This makes it the universal donor for packed red cells but dangerous plasma donor. Group AB has no antibodies. So, the presence of both antibodies is correct.
Explanation:
The Hardy-Weinberg equation is a fundamental principle in population genetics used to calculate the expected frequencies of genotypes in a population that is not evolving (in genetic equilibrium). 'p' represents the frequency of the dominant allele, and 'q' represents the frequency of the recessive allele. p^2 is the frequency of the homozygous dominant genotype, 2pq is the heterozygous genotype, and q^2 is the homozygous recessive genotype.
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