Start Discovering Solved Questions and Your Course Assignments
TextBooks Included
Active Tutors
Asked Questions
Answered Questions
energy flow - ecosystemour world is a solar-powered system and green plants are the entry gates of energy into ecosystem the total incoming solar
secondary production - ecosystem the net primary production is the only energy available to consumers or heterotrophs including man herbivores such
production efficiency - ecosystemthe maximum amount of solar energy harvested by plants is about 5 per cent but the average for green plants on the
primary production - ecosystemenergy accumulated by plants during photosynthesis is called production or more specifically primary production it is
concept of production - ecosystemsthe ecosystems are unable to function unless there is a constant input of energy from an external source that is
energy input in ecosystemsurvival and functioning of ecosystem is dependent on the input of energy continuous availability of energy is essential for
limitations of ecological pyramids the pyramid of energy is a significant improvement over the previous two types of ecological pyramids yet all of
advantages of pyramid of energya pyramid of energy must be based on determination of the actual amounts of energy that individuals take in how much
ecological pyramids - ecosystemthe ancient egyptians constructed elaborate tombs called pyramids the base of the pyramid is broad and it supports the
limiting factor - ecosystemin all ecosystems one factor usually abiotic limits the growth of organisms and is therefore called a limiting factor the
decomposers - biotic componentsalso known as saprotrophs mostly these are microscopic and are heterotrophic in nature decomposer organisms obtain
secondary and tertiary consumers - biotic componentsbesides there are animals which depend on herbivores for food and are called secondary consumers
consumers - biotic components these are also called as phagotrophs or heterotrophs the organisms grouped under this category cannot manufacture their
organic substances - abiotic componentsthese include carbohydrates proteins lipids and their derivatives which are derived from the waste products of
inorganic substances - abiotic componentsthere are about forty elements that are required in various processes of living organisms some of these are
ecology and ecosystemthe concepts of environment ecology ecosystem energy flow and nutrient cycling in the foundation course on science and
sqls fifth concept - null unfortunately sql embraces a fifth concept called null an apparently simple little thing but one that has pervasive effects
updating by deletiondelete from enrolment where studentid sid s4as you can see this differs from example by the addition of the noise word from the
programmes directed towards the common crop plantsthese programmes can be directed towards incorporating the following traits among common crop
types of mechanism - stress conditionplants have evolved a variety of mechanisms to withstand stress conditions in many cases we can precisely define
induction of defensive barriers in plants several polymers deposited near surface of plants form an effective barrier against invasion or stress
protection of plants against toxic substancesplants produce several toxic substances themselves and may also encounter the ones produced by other
response to woundingwounding of tomato plants by mechanical injury or chewing by insects releases a factor that triggers accumulation of two
induction of disease resistance in plants by heat-shockthe fungus cladosporium cucumerinum infects cucumber and causes disease in the plant however
production of substances interfering with virus proliferationin some cases plants are known to synthesise chemicals that inhibit crucial functions of