Plants have a tissue that covers all their organs, it is called the epidermis.
A epidermis is the outermost layer of the plant body, composed of living cells originating in the protoderm.
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We prepared a list of exercises on vegetal epidermis so that you can test your knowledge about this fabric covering plants.
You can consult the feedback and save this list in PDF at the end of the post!
1) (UNISC) The primary meristems: procambium, fundamental meristem and protoderm give rise, respectively, to the following plant tissues:
a) parenchyma, collenchyma and sclerenchyma, periderm, epidermis.
b) primary xylem and phloem, epidermis, parenchyma, collenchyma and sclerenchyma.
c) periderm, xylem secondary phloem, parenchyma, collenchyma and sclerenchyma.
d) primary xylem and phloem, parenchyma, collenchyma and sclerenchyma, epidermis.
e) phellogen, secondary xylem and phloem, parenchyma, collenchyma and sclerenchyma.
2) (PUC-PR) In some indoor plants, such as the famous “with me-nobody-can”, after intense watering, we can observe that its leaves “cry”, that is, they begin to drip, which is commonly an explanation of the “evil eye”. A good observer, however, would know that this phenomenon is related to a leaf structure that eliminates the excess water that the plant has absorbed. This structure is the:
a) stomata.
b) lenticel.
c) plasmodesma.
d) hydathode.
e) cataphyll.
3) (UFJF) Analyze the statements below, about the origin and morphofunctional characteristics of the epidermis in plants.
i. It originates from the ground meristem, located at the ends of the stem and root.
II. In addition to the coating function, it is also involved in carrying out photosynthesis.
III. It is replaced by periderm in organs that develop secondary growth.
IV. It has specialized cells for gas exchange and secretion of various substances.
They are correct the affirmatives:
a) I and II.
b) I and III.
c) I and IV.
d) II and III.
e) III and IV.
4) In humans, the skin is an organ that covers and protects the body. In plants, the tissue found that has a function similar to the skin of animals is called:
a) dermis.
b) epidermis.
c) collenchyma.
d) xylem.
e) phloem.
5) The plant epidermis is a tissue that has some striking characteristics that allow it to be differentiated from other plant tissues. Regarding the vegetal epidermis, mark the incorrect alternative.
a) Epidermal cells are alive at maturity.
b) Epidermal cells have few vacuoles.
c) In some epidermal cells, it is possible to perceive the accumulation of products of metabolism.
d) Epidermal cells rarely contain chloroplasts.
e) In some epidermal cells, it is possible to perceive the presence of pigments.
6) The plant, as well as the animals, has covering tissues that help in the protection of its organism. In a plant in secondary growth, the tissue formed by dead cells that covers the plant is called:
a) parenchyma.
b) xylem.
c) collenchyma.
d) suber.
i) epidermis.
7) In the epidermis, it is common to observe the presence of a lipid substance in the cell walls. This substance that protects the plant against water loss and against solar radiation is called:
a) lignin.
b) cellulose.
c) glucose.
d) cutin.
e) peptic substances.
8) The vegetal epidermis is a tissue found in the primary body of plants that, in addition to ensuring protection, participates in a variety of other important processes. Which of the activities described below cannot be attributed to the epidermis?
a) Protects against excessive water loss.
b) Guarantees defense against insects.
c) It produces substances that can help trap insects, as is the case with carnivorous plants.
d) Participates in gas exchange.
e) Provides support to the body of the plant.
9) (UEPB) Gas exchange, at the level of the leaves, occurs through numerous epidermal openings called:
a) parenchyma.
b) ostioles.
c) stomata.
d) guard cells.
e) aculeus.
10) (UNIFOR) Examining a certain plant tissue under an optical microscope, the following characteristics are verified:
Based on these characteristics, it can be stated that it is:
a) collenchyma.
b) meristem.
c) phloem.
d) epidermis.
e) xylem.
1 — d
2 — d
3 — and
4 — b
5 — b
6 — d
7 — d
8 — and
9 — b
10 — d
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