Biology 7.2.1

Question 1

What are ‘Producers’?

Answer 1

Producers are the Primary Source of Energy in a Food Chain. Eg Plants, Such as Grass, that make their own Energy (Glucose) Via Photosynthesis.

Question 2

___ Organisms are the Producers of Biomass for Life on Earth.

Answer 2

Photosynthetic.

Question 3

What do you Call Organisms that Carry Out Photosynthesis?

Answer 3

Photosynthetic Organisms.

Question 4

___ Organisms Carry Out Photosynthesis.

Answer 4

Photosynthetic.

Question 5

A Producer has the Following Characteristics: (5)

Answer 5

-They are at the Start of Every Food Chain. (The First Trophic Level).

-They Can Photosynthesise.

-They Make their Own Energy, Glucose, Via Photosynthesis.

-They Use this Glucose to Produce Other Biological Molecules, which then Make Up the Producer’s Biomass. (Some is also Used in Respiration).

-In Extreme Environments, the Producers are not Photoautotrophs, but Chemoautotrophs, who Produce Organic Molecules Without Using Energy from the Sun.

Question 6

A Simple Way to Show the Feeding Interactions Between the Organisms in a Community is with a…

Answer 6

Food Chain.

Question 7

The Stages of a Food Chain: (4)

Answer 7

-Producer.
-Primary Consumer.
-Secondary Consumer.
-Tertiary Consumer.

Question 8

What is the ‘Primary Consumer’ in a Food Chain?

Answer 8

The Primary Consumer in a Food Chain Eats to Producer, & Takes its Energy & Biomass.

Question 9

What is the ‘Secondary Consumer’ in a Food Chain?

Answer 9

The Secondary Consumer in a Food Chain Eats the Primary Consumer, & Takes its Energy & Biomass.

Question 10

What is the ‘Tertiary Consumer’ in a Food Chain?

Answer 10

The Tertiary Consumer in a Food Chain Eats the Secondary Consumer, & Takes its Energy & Biomass.

Question 11

What does a ‘Food Chain’ Show?

Answer 11

A Food Chain Shows the Transfer of Energy from One Organism to the Next.

Question 12

What is a ‘Food Chain’?

Answer 12

A Food Chain Shows the Transfer of Energy from One Organism to the Next.

Question 13

What is the Initial Source of All Energy in a Food Chain?

Answer 13

Light Energy From the Sun.

Question 14

What do the Arrows in a Food Chain Show?

Answer 14

The Arrows in a Food Chain Show the Transfer of Energy, From One Trophic Level, to the Next.

Question 15

What is ‘Ecology’?

Answer 15

Ecology is the Branch of Biology that Studies the Distribution & Abundance of Species, the Interactions between Species, & the Interactions Between Species & their Abiotic Environment.

Question 16

What are ‘Quadrats’?

Answer 16

Quadrats are Square Grid Frames, that Can be Used to Measure the Abundance of Plants, or Slow-Moving Animals.

Question 17

Quadrats Can be Used to Measure Abundance of a Population, by Recording: (3)

Answer 17

-The Number of an Individual Species.

-Species Richness.

-Percentage Cover.

Question 18

What is a ‘Transect’?

Answer 18

A Transect is Used to Measure how the Abundance of a Species Changes as you Move Along a Changing Habitat.

Question 19

Explain how a ‘Transect’ Works: (3)

Answer 19

-A Line, Called a Transect, is Set Up on the Ground, eg out of String.

-A Quadrat is Used at Regular Intervals, eg Every 5 Metres Along the Transect.

-At Each Interval, the Quadrat Can be Used to Record the Number of an Individual Species, Species Richness, or Percentage Cover.

Question 20

Consumers that Kill & Eat Other Animals are ___, & those Eaten are ___.

Answer 20

Predators, Prey.

Question 21

The Amount of Predators & Prey in an Environment are very Closely…

Answer 21

Linked.