unit 3

Question 1

food security

Answer 1

is the ability of human population to access food of sufficient quality and quantity

Question 2

sustainable food production

Answer 2

food production must be sustainable and not degrade natural resources on which agriculture depends

Question 3

what absorbed light energy

Answer 3

photosynthetic pigments

Question 4

what do pants depend on for food production

Answer 4

photosynthesis and plant growth

Question 5

field trials

Answer 5

are controlled experiments carried out in a range of environments to compare performances of different cultivar/treatment and to evaluate GM crop

Question 6

inbreeding depression

Answer 6

there is an accumulation of deleterious, homozygous, recessive alleles

Question 7

what does cross breeding tend to

Answer 7

new alleles are reproduced

Question 8

annual weeds characteristics

Answer 8

rapid growth
short life cycle
long term seed viability
high seed output

Question 9

perennial weed characteristics

Answer 9

storage organs
vegetative reproduction

Question 10

herbicides kill what

Answer 10

weeds

Question 11

fungicides kill what

Answer 11

parasites

Question 12

molluscicides kills what

Answer 12

mollusc pests

Question 13

nematides kill what

Answer 13

pests

Question 14

selective herbicide

Answer 14

these have a greater affect on certain plant species

Question 15

systematic herbicides

Answer 15

spread through the vascular system of plant and prevents regrowth

Question 16

biomagnification

Answer 16

an increase in the concentration of a chemical moving between trophic levels

Question 17

biological control

Answer 17

uses natural predators to kill pests

Question 18

integrated pest management

Answer 18

is a combo of chemical, biological, cultural control method to protect crops

Question 19

stereotypy behaviour

Answer 19

repetitive, persistent behaviour without any obvious function

Question 20

misdirected behaviour

Answer 20

when a normal behaviour is directed to itself/environment/others

Question 21

apathy

Answer 21

low levels of activity

Question 22

hysteria

Answer 22

high levels of activity

Question 23

altruism

Answer 23

when an individual benefits in a way where its detrimental to itself (the donor) but beneficial to another ( recipient)

Question 24

ritualistic displays

Answer 24

is when two social primates are competing for the same resource

Question 25

appeasement behaviours

Answer 25

such as grooming, body posture, facial expressions, sexual presentation

Question 26

genetic diversity

Answer 26

the number and frequency of all alleles within a population

Question 27

species richness

Answer 27

the number of different species in an ecosystem

Question 28

relative abundance

Answer 28

the proportion of each species in the ecosystem

Question 29

ecosystem diversity

Answer 29

refers to the number of distinct ecosystems within a defined area

Question 30

over exploitation

Answer 30

this is the rate of resources being used faster than they can be replaced

Question 31

introduced species

Answer 31

humans move species to a new geographical allocation

Question 32

naturalised

Answer 32

species become established

Question 33

invasive

Answer 33

species spread rapidly and eliminate native species