A threatened species category includes
- only endangered species
- only valnerable species
- endangered and rare species
- endangered, vulnerable and rare species
The Correct Option is D
Solution and Explanation
Top Questions on Biodiversity and Conservation
Student to attempt either option (A) or (B).
(A)
(i) Explain giving three reasons why tropics show greatest levels of species diversity.
(ii) Draw a graph showing species-area relationship. Name the naturalist who studied such relationship. Write the observation made by him.
OR
(B)
(i) The world is facing the accelerated rate of species extinctions due to human activities. Explain any three major causes of biodiversity losses.
(ii) Describe ‘Ex situ’ approach for conserving biodiversity. Give any two examples.- CBSE CLASS XII - 2025
- Biology
- Biodiversity and Conservation
- According to a recent wildlife report, the biggest threat to the tiger's survival in Mudumalai Tiger Reserve (MTR) was found to be a small, beautiful flower, \textit{Lantana camara, a tropical American shrub, that invaded 40% of India's tiger range. Tamil Nadu department's Lantana weed eradication drive helped to restore the dying MTR thereby also reducing human-wildlife conflicts. MTR is home to 25 species of grasses and legumes.
Explain how did the removal of Lantana help in restoring the dying Mudumalai Tiger Reserve.
Why is the invasion of Lantana camara a cause of concern in MTR?- CBSE CLASS XII - 2025
- Biology
- Biodiversity and Conservation
- Which of the following is not an alien species in India?
- AP EAPCET - 2025
- Zoology
- Biodiversity and Conservation
- Find the mismatched pair:
- AP EAPCET - 2025
- Zoology
- Biodiversity and Conservation
- Describe the Species-Area relationship as observed by Alexander von Humboldt, for a wide variety of taxa in nature.
- CBSE CLASS XII - 2025
- Biology
- Biodiversity and Conservation
Concepts Used:
Biodiversity and Conservation
The term ‘biodiversity’ is derived from the two words- ‘bios' which means life and ‘diversity’ i.e, differentiation or variation. Edward Wilson, the sociobiologist was the first to popularise the term ‘biodiversity’ in the year 1992. The term implies the occurrence of various plants and animals along with their variants such as biotypes, ecotypes and genes on earth. In our biosphere, the immense diversity or heterogeneity remains not only at the species level but also, at every level of biological organization that ranges from macromolecules in the cells to biomes.
Biodiversity and Conservation is a topic covered under the fifteenth chapter and Unit 5 of NCERT class 12 biology.