Question

50 points ♥

How do following respond to abiotic stresses:

a) Zooplankton

b) Bacteria

c) Polar bear

d) Angiosperms

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Answer 1

Zooplankton:

Zooplankton is a trophic link between primary producers (phytoplankton) and higher trophic levels (e.g., fish). It may be constrained by food availability or by predation, i.e., it may be bottom-up or top-down controlled in the trophic web. At the same time, depending on their density, zooplankton may control phytoplankton productivity and biomass and prevent blooms

Bacteria:

Various abiotic stresses like drought, salinity, nutrient imbalances (including deficiencies and mineral toxicities), and extremes of temperature hinder the growth, development, and yield of agricultural crops.

Polar Bear:

The major abiotic factors that affect polar bears are the cold, snow and water. ... The fur of a polar bear flattens down when swimming which forms a waterproof barrier, and the layer of blubber means that they are not affected by the extreme cold.

Angiosperms:

Abiotic stress imposed on angiosperms by environment may be either physical or chemical, while as biotic stress exposed to the crop plants is a biological unit like diseases, insects, etc.

Hope it helps..........

Answer 2

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