Question

What are the factors may be responsible losses grains of biotic abiotic storage

Answer 1

 (i) Biotic factors such as insects, fungi,bacteria, rodents, mites, birds, etc. (ii) Abiotic factors such as moisturecontent in grains and temperature at which they are stored

Answer 2

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Responses To The Abiotic Factors :

An organism needs to change its physical and behavioral patterns with respect to seasonal changes in climate,to maintain the internal body temperature , water levels. In short to maintain homeostasis.

Such responses can be in the form of Regulation, Conformation , Migration , Suspension and Adaptation

Regulators :

Homeostasicity of these organisms is self regulatory. In other words, independent of the external environment

Regulation of Temperature is known as Thermoregulation and Regulation of Water Concentration is known as Osmoregulation

Large amounts of energy is dissipated while regulation.

For example,

On a hot sunny day,the blood vessels dilate (vasodilation) to compensate for the heat gained while in a cold winter the blood vessels constrict (vasoconstriction) to stop any heat loss from the body

Conformers :

Organisms whose internal environment is variable with the external conditions

Conformers have an evolutionary advantage over regulators,that Conformers dissipate relatively lower amounts of energy for regulation of internal equipoise

For example,

Observed in Reptiles

Migration :

Migration is an example of Behavioral Response to Abiotic Factors

Organisms in order to escape the changing unfavorable climate , travel to distant more suitable places for the purposes of survival and even breeding

For example,

The artic tern flies from the breeding grounds artic to the antartic as the fall starts

Suspension :

Period of minimal or no growth

Dormancy : During unfavorable conditions,seed doesn't germinate rather stays dormant. Nutrition and protection during dormancy are provided to the seed by Endosperm and Seed Coat respectively.

Hibernation : As the winter starts to set in the antartic,animals like polar bear go into sleep for a long period of time

Aestivation : "Summer sleep",organisms hid deep underground to escape the scorching heat during the summer. Example,earthworm

Diapause : A suspended stage of growth,seen in zooplanktons

Adaptation :

Change in physical, behavioral , mental attributes of an organism for the better is known as Adaptation. Penguins have a blubber of fat that insulates them from the chills of antartica

Allen's Rule : Warm blooded animals with distinct populations, inhabitating the poles have shorter limbs and ears than their cousins in the tropic and savanna

For example,

Fennec Fox has larger limbs and ears when compared to Artic Fox.