More number of stomataare present only on the dorsal surface of the leafare present only on the ventral surface of the leafare present on both the dorsal and ventral surfacesare scattered along the leaf margins

Which part of the leaf is usually taken to observe stomata?Leaf marginLeaf apexLeaf epidermisLeaf petiole

In plants, stomata in the epidermis of leaves and stems allow for

Stomata are present in the sporophyte generation of the vast majority of land plants, with the exception of liverworts, as well as some mosses and hornworts. In vascular plants the number, size and distribution of stomata varies widely. Dicotyledons usually have more stomata on the lower surface of the leaves than the upper surface. Monocotyledons such as onion, oat and maize may have about the same number of stomata on both leaf surfaces.[2]: 5  In plants with floating leaves, stomata may be found only on the upper epidermis and submerged leaves may lack stomata entirely. Most tree species have stomata only on the lower leaf surface.[3] Leaves with stomata on both the upper and lower leaf surfaces are called amphistomatous leaves; leaves with stomata only on the lower surface are hypostomatous, and leaves with stomata only on the upper surface are epistomatous or hyperstomatous.[3] Size varies across species, with end-to-end lengths ranging from 10 to 80 μm and width ranging from a few to 50 μm.[4]

This question has two parts.Part A. These stomata are located in the lower epidermis of two leaves. What can be concluded by comparing image X to image Y?Select one:a.X is in a leaf releasing water or oxygen. Y is in a leaf during the night.b.X is in a leaf with a waxy cuticle to prevent overheating. Y is in a leaf that needs to protect its cells from freezing temperatures.c.X is in a leaf of a plant during a drought. Y is in a leaf facilitating photosynthesis.d.X is in a leaf that needs to release excess sugars. Y is in a leaf that needs to take in carbon dioxide.QUESTION 6Question textPart B. What evidence supports your answer to Part A? [B.2H]Select one:a.Stomata open when they have made too much sugar. They close when they have enough carbon dioxide inside the leaves.b.When stomata are open, water vapor and other gases are released into the atmosphere. They close at night when photosynthesis doesn't occur.c.Stomata open to take in more water when the environment is dry. They close to enable photosynthesis to occur.d.When plants get hot, stomata open to release heat. They close to hold present cold air from entering.

Pieces of leaf epidermis were peeled from the plant Commelina communis. The pieces were then placed in a solution of a dye that binds to potassium ions. You would expect that most of the dye would be concentrated in theAsieve cells when the stomata are closed.Bguard cells when the stomata are closed.Cepidermal cells when the stomata are open.Depidermal cells when the stomata are closed.