Question

Unique character of Thallophyta is
A. Thalloid body
B. Absence of vascular tissue
C. Zygotic meiosis
D. All of the above

Answer 1

Hint: Thallophyta is a division of plant kingdom which are a group of non-motile organisms and they are found in moist or wet places. It includes lower plants or thalloid plants.

Complete answer:
First of all, you should know about Thallophyta. Thallophyta is a group of non-motile organisms which are lower plants which includes algae, lichens, fungi, sometimes bryophytes, bacteria, etc.
If we look at options now, option A is the thalloid body. Thallophyta has a thalloid body which means that their body is undifferentiated i.e., their body is not divided into the stem, root and leaves. Both bryophytes and thallophytes have thalloid bodies. Therefore, we can consider this option as it is one of the unique characters of thallophyta.
Moving to option B which is Absence of vascular tissue. Thallophytes and Bryophytes both are nonvascular plants i.e., both do not have vascular tissue. Vascular tissues means the xylem and phloem. It is one of the unique characters of Thallophyta and hence we can consider this option too.
Moving to option C which is Zygotic meiosis. zygotic meiosis is meiosis of a zygote just after the karyogamy i.e., the fusion of two cell nuclei. This zygotic meiosis is done in thallophytes and it is one of the unique features of thallophyta and the zygote is the only one diploid stage during the life cycle. Thus, we can consider this option too.
Last option D is All of the above. This option is the correct one since having a thalloid body, absence of vascular tissue and zygotic meiosis, all of them are the unique features of thallophyta and therefore this option is the correct one as all of the above options are correct.

Thus, the correct answer is option D i.e., All of the above.

Note: Body of thallophytes is undifferentiated which means that their body is not differentiated into leaves, roots and stem. Also, they are nonvascular plants i.e., absence of vascular tissues and zygote meiosis occurs in them. So all these features given in the options are unique features of thallophytes and hence the correct option is all of the above.