Question

Which among the following has specialized tissue for conduction of water?
(i) Thallophyta
(ii) Bryophyta
(iii) Pteridophyta
(iv) Gymnosperms
A. (i) and (ii)
B. (ii) and (iii)
C. (iii) and (iv)
D. (i) and (iv)

Answer 1

Hint: The xylem is the tissue that is important for the conduction of water and minerals in plants, the special conductive tissue the xylem and phloem are present in vascular plants.

Complete answer: The pteridophyte are vascular plants. They have their body differentiated into the aerial shoot system and also, they have an underground root system, the pteridophytes have all the fern groups under them, these are the developed seedless plants and have the xylem and phloem for the conduction of water. On the other hand, gymnosperms are plants which bear naked seeds, they have the conifers like the cedars, pines, redwood, etc. they are vascular plants containing the xylem and the phloem for the water and food conduction. Xylems are complex permanent tissues made up of tracheids, xylem vessels, xylem fibres and xylem parenchyma. These tissues also play an important role in the transpiration process which maintains the optimum temperature in plants. The water via the xylem also transports minerals to different plant parts.
i. The thallophytes have a body that is not differentiated into the stems, roots, and leaves. They have an undifferentiated body and are called the thallus, and thus the thallophytes are named. Examples of thallophytes are algae and lichens. They do not have xylem and phloem.
ii. The bryophytes are simple terrestrial plants which are also known as the amphibians of the plant kingdom. They lack proper roots and leaves, the bryophyte has three groups mainly the mosses, liverworts, and hornworts they do not have the xylem and phloem.
Hence, the correct answer is option is C.

Note: The pteridophytes are the first terrestrial plants to have the conducting tissue. Another most important conducting tissue present in plants is the phloem. It conducts assimilates that is produced by the photosynthetic process.