Question

c) Give one point of difference between the following on the basis of what is indicated in the

brackets.

i) Phloem and xylem (function)

ii) Lymph and blood (red blood cells)

iii) Parenchyma and sclerenchyma (structure and nature of cells)

iv) Ribosome and lysosome (function)

v) Saprophyte and parasite (mode of nutrition​

Answer 1

Answer:

i) Xylem is a vascular tissue that transports water and dissolved minerals absorbed from the roots to the rest of the plant. Phloem is a vascular tissue that transports soluble organic compounds prepared during photosynthesis from the green parts of the plant to the rest of the plant.

ii) Lymph is a clear to white fluid tissue which is composed of lymphocytes and white blood cells.

iii) Parenchyma cells have thin primary walls and usually remain alive after they become mature. ... Sclerenchyma cells have thick lignified secondary walls and often die when mature. Sclerenchyma provides the main structural support to a plant.

iv) Ribosome is a macromolecule and Lysosome is a cell organelle. Both are found in the cells.

v) Saprotrophs, on the other hand, are the living entities that derive their nutrition from the dead and decaying organic matter.

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