In the following in each set a conservation approach and an example of method of conservation are given
(a)In situ conservation-Biosphere Reserve
(b) Ex situ conseravtion-Sacred grooves
(c)In situ conservation-Seed bank
(d)Ex situ conservation-Cryopreservation
Select the option with correct match of approach and method:

Options

A. (a) and (c)
B. (a) and (d)
C. (b) and (d)
D. (a) and (b)

Answer

To solve the question regarding the correct match of conservation approaches and methods, we will analyze each option step by step.

### Step-by-Step Solution:

1. **Understanding Conservation Approaches**:
- **In situ conservation**: This approach involves the conservation of species in their natural habitats. Examples include national parks, wildlife sanctuaries, and biosphere reserves.
- **Ex situ conservation**: This approach involves the conservation of species outside their natural habitats. Examples include seed banks, botanical gardens, and cryopreservation.

2. **Analyzing Each Option**:
- **(a) In situ conservation - Biosphere Reserve**: This is a correct match. Biosphere reserves are areas designated to protect biodiversity and promote research and education.
- **(b) Ex situ conservation - Sacred grooves**: This is incorrect. Sacred grooves are areas where trees and plants are preserved in their natural habitat, thus they fall under in situ conservation.
- **(c) In situ conservation - Seed bank**: This is incorrect. Seed banks are facilities that store seeds outside their natural habitat, which is a method of ex situ conservation.
- **(d) Ex situ conservation - Cryopreservation**: This is a correct match. Cryopreservation involves preserving cells, tissues, or any other substances rich in genetic material at very low temperatures, outside their natural habitat.

3. **Identifying the Correct Matches**:
- From the analysis, we find that:
- (a) is correct.
- (b) is incorrect.
- (c) is incorrect.
- (d) is correct.

4. **Selecting the Correct Option**:
- The only option that contains correct matches is (a) and (d). Therefore, the correct answer is the second option which includes both (a) In situ conservation - Biosphere Reserve and (d) Ex situ conservation - Cryopreservation.

### Final Answer:
The correct option with the right match of conservation approach and method is **(a) In situ conservation - Biosphere Reserve and (d) Ex situ conservation - Cryopreservation**.