Tag: transport in the phloem of plants

Minerals are absorbed by plants - (B) In Ionic form.

• 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'.

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  conduction of food.

• 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. 

In-plant food is transported through the phloem.

Xylem is a type of vascular tissue in plants that transports water and solutes from the roots to the leaves. Phloem is the vascular tissue in plants which conducts sugars and other metabolic products (food) upward and downwards from the leaves.
Thus, the correct answer is option B.

• Vascular tissues make up the organs that transport water, minerals, and food throughout the plant. Vascular tissue can be divided into two functional units. Xylem transports water and minerals from root to shoot. 
• Phloem transports nutrients (such as sugar and amino acids) from leaves and other production sites to roots, flowers, stems, and other tissues.

Phloem transports synthesized food from the leaves to the rest of the plant body. The transport of water, nutrients, and other substances from one part of a plant to another is called as translocation. The medium of transport in plants is water.