Leaving Cert biology: Q10 revision

During the course of your studies, you examined a TS of a dicot stem. What does TS stand for?

• Total section

• Transverse section

• Transport section

During the course of your studies, you examined a TS of a dicot stem. What is a cotyledon?

• A food store found in the stems of plants

• A structure used for transport in a plant

• A food store found in a seed

• A transport structure in a seed

During the course of your studies, you examined a TS of a dicot stem. Why did you use a herbaceous stem and not a woody stem?

• A woody stem has no vascular bundles

• A herbaceous plant is easier to cut through

• All woody plants are monocots and a dicot is required for this experiment

During the course of your studies, you examined a TS of a dicot stem. The stem was cut using

• A knife

• A scalpel

• A backed blade

During the course of your studies, you examined a TS of a dicot stem. Select the correct combination of equipment used in this experiment

• Backed blade, paintbrush, clock glass, microscope slide and cover slip, microscope

• Scalpel, clock glass, microscope slide and cover slip, mounted needle, microscope

• Backed blade, mounted needle, spatula, clock glass, microscope slide and cover slip, microscope

During the course of your studies, you examined a TS of a dicot stem. Why were thin sections cut of the stem?

• Thin sections are easier to cut

• Thin sections allow light to pass through them

• taking thin sections means there is more left of the stem for re growth

During the course of your studies, you examined a TS of a dicot stem. Which diagram represents what you observed under the microscope?

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During the course of your studies, you examined a TS of a dicot stem. Select the correct labels

• A=ground tissue, B=xylem C=phloem

• A=xylem B=ground tissue C=phloem

• A=xylem B=phloem C=ground tissue

• A=phloem B=xylem C=ground tissue

During the course of your studies you dissected a sheep’s heart. Why did you wash the heart with cold water before beginning?

• To remove bacteria

• To remove the smell

• To remove blood clots that may obstruct the view of internal structures

During the course of your studies you dissected a sheep’s heart.How did you distinguish between the left and right side of the heart?

• By pinching the sides:the left side is firmer than the right

• By locating the coronary artery on the front that runs from the left to right side

• All of the above