Which of the following is incorrect?
I. Bryophyllum and Kalanchoe can be vegetatively propagated by leaf segments
II. Mango and Guava are propagated through grafting.
III. Individual of clone have same height.
IV. Roots are used in the vegetative propagation of sweet potato.
V. Estrus cycle is found in mammalian females other than primates.

Options

A. I and II
B. Only III
C. II and IV
D. IV and V

Answer

To determine which of the statements is incorrect, we will evaluate each statement one by one.

### Step 1: Evaluate Statement I
**Statement I:** Bryophyllum and Kalanchoe can be vegetatively propagated by leaf segments.
**Evaluation:** This statement is correct. Bryophyllum is known for its ability to reproduce vegetatively through leaf segments, as it produces plantlets along the edges of its leaves. Kalanchoe also exhibits similar traits.

### Step 2: Evaluate Statement II
**Statement II:** Mango and Guava are propagated through grafting.
**Evaluation:** This statement is also correct. Both mango and guava are commonly propagated using grafting techniques, which allow for the combination of desirable traits from different plants.

### Step 3: Evaluate Statement III
**Statement III:** Individuals of clones have the same height.
**Evaluation:** This statement is incorrect. While clones are genetically identical, environmental factors can lead to variations in height and other physical characteristics. Therefore, it is not accurate to say that all individuals of a clone have the same height.

### Step 4: Evaluate Statement IV
**Statement IV:** Roots are used in the vegetative propagation of sweet potato.
**Evaluation:** This statement is correct. Sweet potatoes can be propagated from their roots, which is a common method of vegetative propagation for this plant.

### Step 5: Evaluate Statement V
**Statement V:** Estrus cycle is found in mammalian females other than primates.
**Evaluation:** This statement is correct. The estrus cycle is indeed found in many non-primates, while primates typically have a menstrual cycle.

### Conclusion
After evaluating all the statements, we find that the only incorrect statement is **Statement III**. Therefore, the answer to the question is that **Statement III is incorrect.**

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