3 cats

Question 1

abnormal appearance of reddish or purplish colouration on leaves or other organs

Answer 1

anthocyanescence

Question 2

coppery colouration of epidermal tissues

Answer 2

bronzing

Question 3

a developmental abnormality where chlorophyll does not fully develop in tissue

Answer 3

chlorosis

Question 4

patchy variation of normal green colour

Answer 4

mosaic

Question 5

Describing a variation similar to mosaic but with small discoloured spots

Answer 5

mottling

Question 6

the development of green pigmentation in tissues or organs in which it is normally absent (e.g. flowers)

Answer 6

virescence

Question 7

describing the gradual loss of green pigmentation in leaves or shoots (often used interchangeably with chlorosis)

Answer 7

yellowing

Question 8

premature death of fully developed tissue (e.g. buds)

Answer 8

blast

Question 9

death of young growing tissues, usually current seasons growth

Answer 9

blight

Question 10

irregular spots on affected tissues

Answer 10

blotch

Question 11

the sudden collapse of seedlings near the soil line

Answer 11

damping-off

Question 12

the loss of foliage from a plant

Answer 12

defoliation

Question 13

death of branches or shoots, beginning at their tips and spreading back toward the main stem or crown

Answer 13

dieback

Question 14

a more or less regular patch of discoloured, raised or sunken tissue

Answer 14

leaf spot

Question 15

tissue death and discolouration

Answer 15

necrosis

Question 16

spots marked by conspicuous concentric rings of differing colour

Answer 16

target spots (ring spots)

Question 17

sudden and rapid browning and shriveling of leaves between the veins and at the margins

Answer 17

scorch

Question 18

the condition resulting from necrotic tissue in a leaf spot falling out of the leaf

Answer 18

shot-hole

Question 19

the drooping of plants or plant parts as a result of loss of turgor in stems or leaves

Answer 19

wilting

Question 20

a sharply defined abnormal growth on an affected woody stem

Answer 20

canker

Question 21

abnormal differential growth during development, preventing normal leaf expansion (i.e. one side does not expand fully)

Answer 21

curling

Question 22

abnormal leaf outgrowth

Answer 22

enation

Question 23

paling and stretching of stems towards a light source

Answer 23

etiolation

Question 24

abnormal proliferation of apical meristems in one plane, causing a flattening of growth

Answer 24

fasciation

Question 25

an abnormal swelling or outgrowth of tissue

Answer 25

gall

Question 26

exudation of viscid sap (e.g. latex or gum) at the stem surface of trees frequently at a wound

Answer 26

gummosis (resinosis)

Question 27

an abnormal condition characterized by the appearance of numerous small water blisters on stems or the lower side of leaves

Answer 27

oedema

Question 28

abnormal development of floral parts into leafy structures

Answer 28

phyllody

Question 29

crowding of leaves or branches around a single point due to the failure of the axis to elongate

Answer 29

rosetting

Question 30

a developmental abnormality where stem tissues do not elongate normally

Answer 30

stunting

Question 31

the abnormal development of accessory shoots or tissues around a focal pint resulting in the congested clustering of organs

Answer 31

witches broom