PLANT DISEASE Final Exam Questions and Graded Answers, 100 %
Guaranteed
What distinctive pattern does the tobacco mosaic virus (TMV) produce on leaves? - ✔✔A
mosaic pattern of discoloration that reduces chlorophyll content and affects photosynthesis.
How does the tobacco mosaic virus (TMV) affect plant growth? - ✔✔It reduces
photosynthesis, which negatively impacts the growth of the plant.
What type of disease is rose black spot? - ✔✔A fungal disease.
What are aphids commonly known as? - ✔✔Greenfly or blackfly.
What do aphids feed on in plants? - ✔✔They feed from the phloem, taking sugars away from
the plant.
What causes stunted growth in plants? - ✔✔Nitrate deficiency, as nitrates are needed for
protein synthesis.
What is chlorosis and what causes it? - ✔✔Chlorosis is a condition caused by magnesium
deficiency, leading to a lack of chlorophyll.
Name a physical defense plants have against pathogens. - ✔✔Cellulose cell walls.
What is one chemical defense that some plants produce? - ✔✔Antibacterial chemicals, such
as those made by mint and witch hazel.
What is a mechanical adaptation some plants have to deter herbivores? - ✔✔Thorns and
hairs on leaves.
Guaranteed
What distinctive pattern does the tobacco mosaic virus (TMV) produce on leaves? - ✔✔A
mosaic pattern of discoloration that reduces chlorophyll content and affects photosynthesis.
How does the tobacco mosaic virus (TMV) affect plant growth? - ✔✔It reduces
photosynthesis, which negatively impacts the growth of the plant.
What type of disease is rose black spot? - ✔✔A fungal disease.
What are aphids commonly known as? - ✔✔Greenfly or blackfly.
What do aphids feed on in plants? - ✔✔They feed from the phloem, taking sugars away from
the plant.
What causes stunted growth in plants? - ✔✔Nitrate deficiency, as nitrates are needed for
protein synthesis.
What is chlorosis and what causes it? - ✔✔Chlorosis is a condition caused by magnesium
deficiency, leading to a lack of chlorophyll.
Name a physical defense plants have against pathogens. - ✔✔Cellulose cell walls.
What is one chemical defense that some plants produce? - ✔✔Antibacterial chemicals, such
as those made by mint and witch hazel.
What is a mechanical adaptation some plants have to deter herbivores? - ✔✔Thorns and
hairs on leaves.
