Question

Porous wood is characterized by:
A. Absence of tracheids.
B. Presence of vessels
C. Absence of vessels
D. Presence of sieve-tubes

Answer 1

Hint: Wood is a porous and stringy basic tissue found in the stems and underlying foundations of trees and other woody plants. It is a natural material – a characteristic composite of cellulose filaments that are solid in pressure and installed in a framework of lignin that opposes pressure.

Step by step answer:The secondary xylem or wood of dicotyledons, vessels in cross-segment looks like pores. So it is called porous wood or diffuse wood. It is found in angiosperms. It is shaped during Intra Stelar auxiliary development. It is solid and hard. It is once in a while characterized as just the auxiliary xylem in the stems of trees or it is characterized all the more extensively to incorporate a similar kind of tissue somewhere else, for example, in the underlying foundations of trees or bushes
So, the right answer is 'Presence of vessels'.
Tracheids are prolonged cells in the xylem of vascular plants that serve in the vehicle of water and mineral salts.
Sieve tubes are specific cells that are significant for the capacity of phloem, which is an exceptionally sorted out tissue that transports natural mixes made during photosynthesis.

Hence, option B is correct

Note: In ring-porous woods, each season's development is in every case all around, because the huge pores framed in the season adjoin on the denser tissue of the prior year. On account of the ring-porous hardwoods, there appears to exist a quite unmistakable connection between the pace of development of lumber and its properties. This might be quickly summarized in the overall proclamation that the faster the development or the more extensive the rings of development, the heavier, harder, more grounded, and stiffer the wood.