Question

Looking at the food web below, what organism is NOT a secondary consumer. 5 Food Web Zooplankton Phytoplankton A. Crab e B. Gull C. Fish D. Lobster E. Whelk

Answer 1

• (C) Fish is not a secondary consumer. Looking at the food web, fish eat prawns which is a secondary consumer making fishes the tertiary consumer.
• Following is the shannon weiner index
  o ot individuals (n) Date: lapi Pi lmpi 20/s3 20 .371 0.36 -0.935 sp 2 13 13/3 -1.406 -0.344 0.245 -0-161 -2.882 0.0S6 4 -0.26 - 2.024 0.132 Ap 5 0.095 -0.223 -2.353 Ap 4 4/63 -0.194 0.075 -2.590 6 N 2 53 H- Piln pi --0-341 D344+ )0-161 + )0-247 +(-)0.223+-0199
  Here, n= number of individuals of particular species

N= total number of individuals

p is the proportion (n/N) of individuals of one particular
species found (n) divided by the total number of individuals found (N)

ln is the natural log

Σ is the sum of the calculation

• Under low soil phosphorus, mycorrhiza are most likely to benefit plants through phosphorus intake because at high concentrations, phosphorus interacts with the phospholipid structure of mycorrhiza thereby reducing spore size and phosphorus uptake efficiency.

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