PLANTS
PLANT TISSUE
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Bi-directional movement (up and down stem).
|
|
|
Elongated, tubular shape with thin walled sieve tubes.
|
|
|
Transportation of feed and nutrients.
|
|
|
Occupy the centre of the vascular bundle.
|
|
|
Water and mineral transport from roots to aerial parts of the plant.
|
Detailed explanation-1: -The correct answer is Phloem transports photosynthetic products. Phloem is a living tissue in vascular plants that conducts the soluble organic compounds synthesized downwards from the leaves during photosynthesis. Hence option 2 is correct.
Detailed explanation-2: -The vascular tissue, phloem helps in the transportation of the synthesized food from the leaves to various storage organs. Phloem is a complex permanent tissue that is present in all vascular plants. Phloem consists of various elements-phloem parenchyma, phloem fibers, companion cells, and sieve tubes.
Detailed explanation-3: -So, the correct answer is ‘Organic food moves upward and downward through phloem.
Detailed explanation-4: -The cells that make up the phloem are adapted to their function: Sieve tubes-specialised for transport and have no nuclei . Each sieve tube has a perforated end so its cytoplasm connects one cell to the next. Sucrose and amino acids are translocated within the living cytoplasm of the sieve tubes.
Detailed explanation-5: -Final answer: Phloem transports food from the leaf to other parts of the plant.