NEET BIOLOGY

ECOLOGY

ORGANISMS AND THE ENVIRONMENT

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which is the initial source of energy in most ecosystems?
A
sunlight
B
decomposers
C
nutrients in soil
D
oxygen in the air
Explanation: 

Detailed explanation-1: -The source of all energy in most ecosystems is the sun. This energy arrives in the form of sunlight, which is captured by organisms called producers. One example of a producer is a plant.

Detailed explanation-2: -The vast majority of energy that exists in food webs originates from the sun and is converted (transformed) into chemical energy by the process of photosynthesis in plants.

Detailed explanation-3: -The energy of the sun is the original source of most of the energy found on earth. We get solar heat energy from the sun, and sunlight can also be used to produce electricity from solar (photovoltaic) cells. The sun heats the earth’s surface and the Earth heats the air above it, causing wind.

Detailed explanation-4: -For almost all organisms on earth, the primary source of energy is solar energy.

Detailed explanation-5: -The Sun is the only source of energy for all ecosystems on Earth except for deep sea hydro-thermal ecosystem. In deep sea hydro-thermal ecosystem, sunlight cannot penetrate and hence chemical deposits and hydrothermal fluids are the source of energy for the organisms habitat in this ecoystem.

There is 1 question to complete.