Which of the following featurs cannot be shown by structure which is vital link between be two generation ensuring continuity of species ?
(a) Thick walled
(b) Multicelled
(c ) One set of chromosomes
(d) Meiocyte
(e) Resting structure

Options

A. (a), (b), & (e)
B. (a),(b) & (d)
C. (b) & (c )
D. (d) & (e)

Answer

To solve the question regarding the features that cannot be shown by the structure that serves as a vital link between two generations, we need to analyze the options provided in relation to the zygote, which is the structure formed by the fusion of male and female gametes.

### Step-by-Step Solution:

1. **Understanding the Zygote**:
- The zygote is formed when male and female gametes fuse during fertilization. It is the initial stage of development for a new organism and represents the link between two generations.

2. **Analyzing Each Option**:
- **(a) Thick walled**:
- Some zygotes, such as zygospores in fungi and algae, can be thick-walled to protect against unfavorable conditions. Therefore, this feature can be present in certain types of zygotes.
- **(b) Multicelled**:
- A zygote is unicellular; it is a single cell that will undergo mitotic divisions to develop into a multicellular organism. This feature cannot be shown by the zygote.
- **(c) One set of chromosomes**:
- The zygote is diploid, meaning it contains two sets of chromosomes (one from each parent). Therefore, it does not have just one set of chromosomes.
- **(d) Meiocyte**:
- A meiocyte refers to a cell that undergoes meiosis. Since the zygote is formed by the fusion of haploid gametes and is diploid, it is not classified as a meiocyte. However, in some organisms, the zygote can undergo meiosis to produce haploid offspring, but it is not a meiocyte itself.
- **(e) Resting structure**:
- The zygote can enter a dormant or resting stage under unfavorable conditions, similar to a zygospore. This feature can be present.

3. **Identifying Features Not Shown by Zygote**:
- From the analysis, the features that cannot be shown by the zygote are:
- **(b) Multicelled**: Zygote is unicellular.
- **(c) One set of chromosomes**: Zygote is diploid, not haploid.

4. **Conclusion**:
- The features that cannot be shown by the zygote are **(b) Multicelled** and **(c) One set of chromosomes**.

### Final Answer:
The correct options are **(b) Multicelled** and **(c) One set of chromosomes**.

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