WBBSEClass XLife Science05 (d) Biodiversity and Its Conservation05 Mark2025 Hard

QQuestion

What is the role of cryopreservation in the conservation of biodiversities? What information may be found from DNA fingerprinting regarding conservation? [3 + 2]

Exam-ready answer 05 Mark

Answer

Cryopreservation is a method of ex-situ conservation in which living biological materials are preserved at very low temperatures (–196°C) in liquid nitrogen.

Role in biodiversity conservation:

  • It helps in the long-term preservation of germplasm such as seeds, pollen, sperms, ova, embryos, and tissues of endangered species.
  • Preserved material can be revived later for breeding, reintroduction, or genetic improvement programmes.
  • It safeguards genetic diversity of species that are threatened, rare, or have very small populations.

Information obtained from DNA fingerprinting for conservation

DNA fingerprinting provides genetic information useful for conservation, such as:

  1. Genetic diversity and relatedness: It helps identify genetic variation within and between populations, which is essential for planning conservation strategies.
  2. Species and individual identification: It is used to identify species, individuals, and cases of illegal wildlife trade and poaching, supporting law enforcement and conservation efforts.
Was this answer helpful?

Related Questions

More WBBSE Hard level questions

1/12

Prepare a list of endangered biodiversities of Indo-Burma and Sundaland hotspots.

Hard 02 Mark

Prepare a list of animals being endangered by poaching. Which environmental factors have the potentialities to increase the chance of developing cancer? [3 + 2]

Moderate 05 Mark

Explain the relationship between the decline in the number of biodiversities with that of over-exploitation with the help of two examples. Construct a mental map of problems caused by ever-increasing human population. [3 + 2]

Moderate 05 Mark

Prepare a list of diseases linked with pollution as observed by a doctor among her or his patients in a whole day. Which in-situ measures are associated with the conservation of tiger and one-horned rhinoceros in the same national park? [3 + 2]

Easy 05 Mark

Which one of the following is an incorrect food chain? (a) Grass → Rabbit → Snake → Hawk (b) Grass → Grasshopper → Frog → Snake (c) Grass → Cow → Man → Tiger (d) Grass → Insect → Rat → Snake

Easy 01 Mark

The smallest unit of an ecosystem containing both biotic and abiotic factors is— (a) A green leaf (b) A flowering branch (c) An organ of a plant (d) A pond

Easy 01 Mark

One of the environmental problems of Sunderbans is imbalance in prey - predator number — Justify the validity of the statement with three examples. What are the roles of biosphere reserve and sanctuary in the conservation of biodiversity ? [3+2=5] OR What are the causes for the endangeredness of the following wild animals ? [3+2=5] Royal Bengal Tiger One-horned Rhinoceros Lion What are the two effects of air pollution on human health ?

Moderate 05 Mark

Explain the following three problems related to ever-increasing human population- Over-exploitation and depletion of natural resourcese Changes in atmospheric condition and global warming Deforestation and loss of ecosystems Two major causes behind the loss of biodiversity are over-exploitation and destruction of habitat due to change in land use pattern - establish the validity of the statement with proper example. [3+2=5] Or What might be the reasons behind the disturbances in Nitrogen Cycle ? It is very much essential to publish a PBR document for each village of India — which information can be gathered from a PBR regarding biodiversity ? [3+2=5]

Moderate 05 Mark

Three environmental problems of the Sunderbans are- imbalance in the numbers of prey and predators destruction of mangrove plants due to urbanisation rising sea level Analyse the probable effects of the three problems. Mention the location and the name of one endangered species of a biodiversity hotspot distributed in and outside the geographical area of India. [3+2=5] OR Describe the nitrogen cycle with the help of a word diagram. Analyse any two problems which may arise if the nitrogen cycle is disturbed. [3+2=5]

Moderate 05 Mark

Write one symptom of each of two diseases which might be caused if suspended particulate matter enters into the respiratory tract through inspiration. Construct the sequence of events when agricultural runoff is drained into water bodies. [2+3=5] OR Poaching is one of the main reasons behind the depletion of biodiversity-Prepare a list of any three such endangered wild animals resulting from it. Show the various methods of conservation of biodiversity with the help of a chart. [3+2=5]

Easy 05 Mark

One of the efforts for the conservation of Red Panda is captive breeding

Easy 01 Mark

What is the main role of JFM?

Easy 01 Mark