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Class 10
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Demonstration of Stomata on a Leaf Peel
Demonstration of Stomata on a Leaf Peel
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1)
Where are Stomata found?
Epidermal layer
Endoderm layer
Inner layer
Exodermal layer
2)
In what part of the plant is transpiration happening?
Roots
Chloroplast
Seeds
Stomata
3)
What are Stomata responsible for?
Transpiration.
Absorption of water.
Exchange of gases.
All of the statements.
4)
On which surface of a dicot leaf are more stomata present?
On upper surface.
On lower surface.
On lateral edges of the leaf.
On both surfaces of the leaf.
5)
On which surface of the monocot leaf are more stomata present?
On upper surface.
On lower surface.
On lateral edges of leaf.
On both surfaces of leaf.
6)
When should the leaf be plucked in order to prepare a temporary slide of a leaf peel?
Freshly plucked leaf.
Leaf plucked a few hours earlier.
Leaf plucked a day earlier.
Dried and preserved leaf.
7)
What part of the leaf is used to prepare the leaf peel mount?
Upper side of a leaf.
Lower side of a leaf.
Both upper and lower side of leaf.
Neither upper nor lower side of leaf.
8)
Given below are the steps in the preparation of a temporary mount of a stained leaf peel. (I) Cover the material with the cover slip. (II) Transfer the stained peel to the clean glass slide and add a drop of glycerine. (III) Carefully pull out the thin membranous transparent layer from lower epidermis. (IV) Drop it in the water in a Petridish and add a drop of Safranin stain. Which of the following is the correct sequence of steps?
iii, iv, ii, i
i, ii, iii, iv
ii, iii, iv, i
iii, iv, I, ii
9)
Which of the following was not a good source of leaf peel?
Lily
Bryophyllum
Petunia
Cactus
10)
A well-stained temporary mount of leaf peel, when focused under high power of a microscope, should show which of the following?
Epidermal cells, stomata, guard cells with one nuclei and many chloroplasts.
Epidermal cells, stomata, guard cells with many nuclei and one chloroplast.
Stomata and guard cells without nuclei and chloroplast.
Stomata but no guard cells or epidermal cells.
