(i)_______ plant hormone is applied to the stem cuttings for initiating the formation of new roots. (ii)_______ helps in synthesis of chloroplasts in the leaves.

Options

A. i-Gibberellins, ii-Ethylene
B. i-Ethylene, ii-Auxins
C. i-Auxins, ii-Cytokinins
D. i-Cytokinins, ii-Gibberellins

Answer

To solve the question, we need to identify the correct plant hormones that correspond to the two statements provided.

### Step-by-Step Solution:

1. **Identify the first blank**: The question states that a plant hormone is applied to stem cuttings to initiate the formation of new roots.
- The hormone that is primarily responsible for promoting root formation in plant cuttings is **Auxin**. Auxins are known to stimulate root development and are commonly used in horticulture for rooting cuttings.

2. **Identify the second blank**: The question then asks which hormone helps in the synthesis of chloroplasts in the leaves.
- The hormone that plays a significant role in the synthesis of chloroplasts is **Cytokinin**. Cytokinins are known to promote cell division and are involved in the growth and development of chloroplasts, which are essential for photosynthesis.

### Final Answers:
(i) Auxin
(ii) Cytokinin