Tag: permanent tissue
Questions Related to permanent tissue
Which of the following is a food synthesising tissue?
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Phloem
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Sclerenchyma
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Chlorenchyma
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Aerenchyma
- Phloem is also called as bast.
- These tissues in plants conduct foods made in the leaves to all other parts of the plant.
- Phloem is composed of various specialized cells called sieve tubes, companion cells, phloem fibers, and phloem parenchyma cells.
- Hence, Phloem is a food synthesizing tissue.
The movement of molecules in phloem is
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Unidirectional.
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Bidirectional.
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Non-directional.
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Sometimes unidirectional and sometimes bidirectional.
Phloem is responsible for transport of food and minerals. Food synthesized in photosynthetic parts is translocated to nonphotosynthetic parts through the phloem. Phloem translocates organic substances and inorganic solutes first from leaves to all other parts of the plant and storage organs. Storage organs re-export organic nutrients to those parts which require the same as newly formed leaves and fruits i.e., it is bidirectional.
In plants, water is transported through
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Xylem
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Phloem
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Stomata
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Root hair
- Xylem functions as a conducting tissue for water and minerals from roots to the stem and leaves.
- It also provides mechanical strength to the plant parts. It is composed of four different kinds of elements, namely, tracheids, vessels, xylem fibres, and xylem parenchyma.
- Hence In plants, water is transported through Xylem.
- So, the correct answer is 'Xylem'.
The number of division with the plants having vascular
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$4$
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$2$
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$1$
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$3$
Minerals are absorbed by plants:
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In colloidal form
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In Ionic form
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In precipitated form
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None of these
Minerals are absorbed by plants - (B) In Ionic form.
Which one develops from endodermis?
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Nervous system, urinary bladder and eye
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Liver, connective tissue and heart
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Thymus , spinal cord and brain
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None of these
- The endodermis is the boundary between the cortex and the stele. In many seedless vascular plants, the endodermis is a distinctly visible layer of cells immediately outside the vascular cylinder (stele) in roots and shoots.
- Hence endodermis is present in plants but not in animals.
- So, the correct answer is 'None of these'.
In higher plants, transport of food material occurs through ______________.
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Companion cells
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Sieve elements
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Tracheids
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Transfusion tissue
The food manufactured in the leaves is translocated upwards and downwards. And to all the parts of the plant through its phloem. The phloem conducts some other substances like amino acids. The conducting cells of the phloem are cylindrical cells known as sieve tubes. These partitions are known as sieve plates. Sieve elements are the food conducting cells of many phloem tissues. Sieve elements in angiosperms are the sieve tubes, while in gymnosperms and pteridophytes, these are sieve cells.
So, the correct answer is option B.
In plants, phloem tissues perform the function of
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Conduction of water
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Conduction of food
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Photosynthesis
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Mechanical suppor
In plants, phloem tissues perform the function of conduction of food.
Leaf mesophyll is included in?
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Epidermal tissue system
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Ground tissue system
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Vascular tissue system
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Bark
Function of phloem in the plant is____________
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Transport of water
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Transport of food
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Photosynthesis
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Growth
- Phloem is the vascular tissue responsible for the transport of sugars from source tissues (e.g., photosynthetic leaf cells) to sink tissues (e.g., non-photosynthetic root cells or developing flowers).
- Other molecules such as proteins and mRNAs are also transported throughout the plant via phloem. Phloem is composed of several cell types including sclerenchyma, parenchyma, sieve elements and companion cells.
- The sieve element and companion cell are found closely associated with each other in what is referred to as the sieve element/companion cell complex. One or more companion cells may be associated with a single sieve element.