MCQ 2_2A Food Chains/ Niches

Marking Guide

1.	As energy flows along a food chain it becomes
	A.	less because some is used for growth by the organisms
	B.	less because some is lost by the organisms as movement and heat
	C.	more because some is gained as movement and heat
	D.	more because some is gained as organisms grow

2.	Which of the following describes a community?
	A.	the total number of one species present
	B.	all the living organisms and the non-living parts
	C.	all the living organisms
	D.	all the plants

3.	The niche of an organism is
	A.	where it lives
	B.	its role in the habitat
	C.	the type of habitat where it is found
	D.	the number of organisms present

4.	Which of the following is not a description of a niche?
	A.	tiny decomposer in the soil
	B.	small bird of prey
	C.	microscopic floating producer
	D.	large black beetle

5.	An ecosystem is more stable when it has
	A.	only a few different members of each species
	B.	many different species
	C.	many members of each species
	D.	few different species

6.	Plants convert 5% of the light energy they receive into new plant material. In the food chain below, primroses receive 100 000 units of light energy.Primrose → vole → weasel → owlHow much energy is available for the vole?
	A.	10 000 units
	B.	1000 units
	C.	100 units
	D.	10 units

7.	Animals that feed on both plants and animals are called …
	A.	carnivores
	B.	herbivores
	C.	detritivores
	D.	omnivores

14.	The diagram below shows a food web from the seashore. The periwinkle can be described as……
	A.	producer		B.	primary consumer
	C.	secondary consumer		D.	decomposer

9.	Which term describes all the organisms living in the same area?
	A.	food web
	B.	ecosystem
	C.	population
	D.	community

10.	Which term describes an animal that eats other animals in food web?
	A.	prey
	B.	predator
	C.	producer
	D.	primary consumer

11.	In a woodland ecosystem which of the following describes a community?
	A.	all the oak trees
	B.	all the plants
	C.	all the plants and animals
	D.	all the oak trees and blackbirds

Consider the food web below and use it to answer questions 12 and 13.

12.	If the tadpole population decreases, the water boatman population is likely to
	A.	decrease		B.	remain unchanged
	C.	increases slowly		D.	increases rapidly

13.	If water beetles are removed, water boatmen have more food, but their number may not increase because
	A.	water beetles also eat small herbivorous fish		B.	tadpoles may now be eaten by herbivorous fish
	C.	tadpoles may run out of food		D.	carnivorous fish must now be eat more water boatmen

14.	In a Rain Forest Biome which of the following would be at the producer level?
	A.	chimpanzees
	B.	monkeys
	C.	fruit bearing trees
	D.	pine trees

15.	Biodiversity can be defined as the
	A.	number of plants in a habitat
	B.	number of animals in a habitat
	C.	variety of species in an ecosystem
	D.	plants and animal together with their habitat

16.	Which of the following is true about secondary consumers in an ecosystem?
	A.	They eat only plants
	B.	They are omnivorous
	C.	They eat primary consumers
	D.	They are eaten by primary consumers

17.	Which term describes an animal that eats other animals in a food web?
	A.	prey
	B.	predator
	C.	producer
	D.	primary consumer

18.	Animals that feed on both plants and animals are called …
	A.	carnivores
	B.	herbivores
	C.	detritivores
	D.	omnivores

19.	Arrows in a food chain indicate:
	A.	the direction of energy flow
	B.	what organism will be eaten next
	C.	how much energy is being passed on
	D.	which organism eats which

20.	If a kestrel eats a mouse that eats grass, the kestrel is a
	A.	producer.
	B.	secondary consumer.
	C.	primary consumer.
	D.	decomposer.