Ecosystems

The region Where Life exists is called __________.

• atmosphere
• lithosphere
• hydrosphere
• biosphere

Which of these decribes a Food Chain the best?

• Eating and Being Eaten

• Eating And Keep On Eating

• Only Being Eaten

• All the options

Sun------>Producer(grass)---->________(deer)------->Carnivore(lion)

This is a Food Chain.

• True

• False

Define Trophic levels.

• Various links or steps representing organisms in a food chain at which the transfer of food (and energy) takes place.

• Different types of habitats in an ecosystem.
• The number of species present in an ecosystem.
• The process of energy transfer between organisms in an ecosystem.

What are ecological pyramids?

• Visual representations of population sizes in an ecosystem.
• Models used to study the behavior of animals in their natural habitats.
• Charts that show the distribution of species in a given area.
• Graphical representations of trophic structure and energy flow in an ecosystem.

Which of the following belong to abiotic componenets of environment?

• soil, water, air

• rain, wind, clouds
• rocks, mountains, trees
• sunlight, plants, animals

What is Parasitism?

• Parasitism is a type of symbiotic relationship where one organism, the parasite, benefits at the expense of another organism, the host.
• Parasitism is a type of symbiotic relationship where both organisms benefit.
• Parasitism is a type of symbiotic relationship where both organisms are unaffected.
• Parasitism is a type of symbiotic relationship where both organisms are harmed.

What is the Cuscuta?

• Parasitic plant

• Pradatic plant

• Symbiotic plant

Draw a Ecological pyramid.