Organisms and Populations Test - 4

Living organisms present in an ecosystem forms biotic components. It includes all plants, animals and microbes. The biotic components share and compete for resources present in particular ecosystem.

The process of maintaining consistency of its internal environmental conditionis called homeostasis. It is in terms of optimal temperature , body fluid concentration etc.

The factors which is responsible for wide variety of habitats within each biome includes local and regional variations of temperature, soil type, water availability etc.

Hypersaline lagoons have very high concentration of salt (>100). Some organisms can survive in wide range of salinity. These organisms are called euryhaline species.

Xerophytes are plants that grows in deserts having very less water. Sunken stomata, leaves reduced into spines and CAM photosysnthesis are the characteristicfeatures of these plants. Cuticle is present on leaves to prevent loss of water.

Biotic potential can be decribed as natural capacity of organisms in an ecosystem to reproduce. Biotic potential depends upon availability of food, water and numberof organisms in reproductive age group.

Edaphic factors includes pH, topography and substratum of the soil present in a geographical area. Edaphic factors influence the type of vegetation in greographical area large extent.

Vultures will not be considered as predator. Vultures feed on dead animals on the other hand predators kill or harms the prey for obtaining food.

A hyperparasite is a parasite whose host is a parasite. Plasmodium is causal organism of malaria that have two host human being and female anopheles mosquito. Mosquito itself is parasitic to human beings.

The body temperature of any homeotherm falls or rises suddenly it would become ill due to change in homeostasis of individual. At higher temperature enzymatic activity get altered that change the physiological activities of organisms.