Question

Maintenance of plant diversity in natural reserve is known as

• A. In vivo
• B. In vitro
• C. Ex situ
• D. In situ

Answer 1

The correct option is D

In situ

The correct option is D

Explanation of correct option:

1. In situ conservation refers to the preservation of ecosystems and natural habitats, as well as the maintenance and recovery of viable populations of species in their natural environments, or, in the case of domesticated or cultivated species, in the environments where their distinctive properties have developed.
2. National parks, sanctuaries, natural reserves, biosphere reserves, sacred grooves, and so on are examples.

Explanation of incorrect options:

Option A:

1. In-vivo conservation is a type of conservation that involves a variety of activities to ensure the survival of species that are on the verge of extinction.
2. Shoot apical or axillary-meristem-based micropropagation, somatic embryogenesis, cell culture technologies, and embryo rescue techniques, as well as a variety of in vitro cold storage techniques are the methods used in In vivo conservation.

Option B:

1. In vitro conservation can refer to short-, medium-, or long-term storage.
2. Long-term germplasm preservation is only possible through a technique known as 'cryopreservation,' in which plant material is stored at extremely low temperatures (typically liquid nitrogen at -196°C).
3. Eg . In vitro conservation is used to store pollen grain, which has the male reproductive cells in angiosperms.

Option C:

1. Ex situ conservation is the preservation of plant samples outside of their natural habitat, whether as a whole plant, a seed, pollen, tissue or cell culture, or as a seed, pollen, tissue or cell culture.
2. Eg. Botanical gardens

Final answer : Maintenance of plant diversity in natural reserves is known as In situ conservation.