Question

Patchiness of animals may be due to all the following except:

A)reproductive and social patterns(ex: swarming and schooling behavior)

B)Physiochemical gradients (ex:Temperature and nutrients)

C)Interspecific competition

D)Benthic homogeneity

E)Mass water transport

A fish that eats zooplankton occupies what trophic energy level? First,Second,third, or Fourth

Single-celled micro-organisams, known for their well-organized membrane-stacks which can metabolize small carbon compounds are named ____?

Answer 1

Ans) Patchiness of animals may be due to all of the following except:

D) Benthic homogeneity

Explanation- Patchiness can be defined only statistically: individuals are found more frequently together than one could predict from an expectation of randomness.

Causes of patchiness in the distributions of benthic
invertebrates is due to benthic heterogeneity rather than benthic homogeneity.
Physical environmental factors, such as water depth
and movement and sediment type, are believed to
determine large-scale patterns of distribution. Within these patterns, however, spatial heterogeneity exists at various scales, forming a mosaic of patches.

The scale of this heterogeneity spans many orders of magnitude in its spatial extent, ranging from planetary down to microscale

Rest all are the correct causes of Patchiness in animals

Ans) A fish that eats zooplankton occupies third trophic energy level.

Explanation-

Phtoplankton (1st trophic energy level) is eaten by zooplankton (2nd trophic energy level) which is further eaten by fish (3rd trophic energy level).

Ans) Single-celled micro-organisams, known for their well-organized membrane-stacks which can metabolize small carbon compounds are named Eukaryotes.

Eukaryotes are the first organisms having choroplasts which are involved in carbon metabolism

Within the space enclosed by a chloroplast’s inner membrane is a set of interconnected and stacked, fluid-filled membrane sacs called thylakoids. Each stack of thylakoids is called a granum. The fluid enclosed by the inner membrane and surrounding the grana is called the stroma.

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