Tag: kinds of plant tissue
Questions Related to kinds of plant tissue
Between the bark and the wood in a woody stem, there is a layer of meristem called:
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Zone of cell division
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Vascular cambium
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Cork cambium
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Both B and C
Cambium is a kind of meristem which is most active in woody plants and it lies between the bark and wood of the stem. The vascular cambium forms tissues that carry water and nutrients throughout the plant. On the outer surface, the vascular cambium forms new layers of phloem, and on the inner surface, new layers of xylem. The cork cambium creates cells that eventually become bark on the outside and cells that add to the cortex on the inside. In woody plants, the cork cambium is part of the periderm. So, the correct answer is "both vascular and cork cambium".
Choose the correct answer from the alternatives given.
Meristematic activity is seen maximum in the:
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shoot
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root hair
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bud
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leaf
Meristematic activity is seen the maximum in the shoot of a plant. The meristematic tissue contains undifferentiated cells found in the zone of the plant where growth can take place.
Meristematic tissue in vascular bundle is
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Phellem
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Procambium
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Interfascicular cambium
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Fascicular cambium
Intrafascicular cambium is present between xylem and phloem in dicot stem and roots. It is also termed as fascicular cambium. This meristematic area spreads laterally from each bundle and eventually becomes continuous, forming a complete vascular cambium.
The term meristem was coined by
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Hanstein
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Nageli
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Schmidt
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Esau
- The term meristem was first coined by a Swiss botanist Carl Wilhelm von Nägeli in 1858
- The term meristem was mentioned in his book "Contributions to Scientific Botany"
- It is derived from the Greek word 'merizein' which means 'to divide'
Choose the correct answer from the alternatives given.
The primary growth in plants results from:
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primary cambium
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cambium
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promeristem
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lateral meristems
The primary growth in plants results from promeristem. Promeristem is the early embryonic meristem from which other advanced meristems are derived. It is present in a very small area which further divides to form primary meristem.
Which of these types of cells is most likely to divide?
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Meristem
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Parenchyma
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Xylem
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Epidermis
Meristem cells are most likely to divide as it has the capability to divide but others do not have the capability to divide. Meristem cells are located in a specific region where the growth of the plant occurs. So, the correct answer is option "meristem".
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pericycle
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endodermis
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epidermis
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stele
In a typical monocot root, Epiblema is single layered, consists of thin- walled cells. A few tubular root hair arise as unicellular elongation of epiblema cells.
Which of the following is not a function of epidermis?
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Protection of underlying cells
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Gaseous exchange
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Conduction of water
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Non conduction of water by root hairs
The epidermis is a single layer of cells found on outer layers in different parts of the plant. It forms a barrier between the underlying tissues in a plant with the surrounding environment. Therefore, it is protected from adverse environmental conditions.
The presence of stomata and guard cells in the epidermal tissue will help in the exchange of $O _{2}$ and $CO _{2}$.
Conduction of water and minerals in plants takes place in conducting vessels. It is located in the core, known as xylem. Thus conduction of water is not the function of the epidermis but, it is of xylem.
The correct option is C.
Choose the odd feature for epidermis
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Living
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Parenchymatous
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Always single layered
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May have cutin deposition
Epidermis usually consists of a single layer of cells and is the outermost layer present on leaves, stem and roots of plants. The epidermis consists of living parenchyma cells. On most plant stem and leaves, cutin, a fatty substance, is very often deposited on the outer surface of the epidermal cell wall to form cuticle over which wax may also be deposited. Generally epidermis is single layered, but in xerophytes it is multilayered'
The external protective tissues of plants are
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Epidermis
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Xylem
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Pericycle
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None of the above
The epidermis is a single-layered group of cells that covers plants leaves, flowers, roots and stems. It forms a boundary between the plant and the external environment. The epidermis serves several functions, it protects against water loss, regulates gas exchange, secretes metabolic compounds, and especially in roots absorbs water and mineral nutrients.