Choose the wrong statement:
- Species diversity increases as we move away from the equator towards the poles.
Stellar's sea cow and passenger pigeon got extinct due to over exploitation by man.
- Lantana and Eichornia arc invasive weed species in India.
- The historic Convention on Biological Diversity was held in $1992$.
The Correct Option is A
Solution and Explanation
Top Questions on Biodiversity and Conservation
- A strict protection of biodiversity hotspots could reduce the ongoing mass extinction by almost:
- KCET - 2024
- Biology
- Biodiversity and Conservation
- (a) Redraw the pie chart identifying the groups ’A’, ’B’, ’C’, and ’D’ in their respective positions.
(b) Mention two examples of recently extinct animals.
- CBSE CLASS XII - 2024
- Biology
- Biodiversity and Conservation
- Tropical regions harbour more species than the temperate regions. How have biologists tried to explain this in their own ways? Explain.
- CBSE CLASS XII - 2024
- Biology
- Biodiversity and Conservation
- Assertion (A): “Biodiversity hotspots” are the regions which possess high levels of species richness, high degree of endemism.
Reason (R): Total number of biodiversity hotspots in the world is 22 with two of these hotspots found in India.- CBSE CLASS XII - 2024
- Biology
- Biodiversity and Conservation
- Biodiversity hotspots cover less than 2% of Earth's land area. Strict protection of these areas can reduce the rate of ongoing extinctions. Explain.
- CBSE CLASS XII - 2024
- Biology
- Biodiversity and Conservation
Questions Asked in KEAM exam
- In the measurement of length 6 $\mu$m is equal to $x$ pm. Then the value of $x$ is
- KEAM - 2024
- Dimensional Analysis
- If the lines \( \frac{x-1}{2} = \frac{y-2}{\alpha} = \frac{z-3}{2} \) and \( \frac{x-1}{2} = \frac{y-2}{1} = \frac{z-3}{-2} \) are perpendicular, then the value of \( \alpha \) is:
- KEAM - 2024
- Integration
- An organic compound contains 37.5% C, 12.5% H and the rest oxygen. What is the empirical formula of the compound?
- KEAM - 2024
- Oxygen
- Let A, B, C denote the set of students in a college who play football, basketball, and cricket respectively. If \( n(A) = 60 \), \( n(B) = 55 \), \( n(C) = 70 \), \( n(A \cup B \cup C) = 100 \) and \( n(A \cap B \cap C) = 20 \), then the number of students who play exactly two of these sports is
- KEAM - 2024
- Relations and functions
For the reaction:
\[ 2A + B \rightarrow 2C + D \]
The following kinetic data were obtained for three different experiments performed at the same temperature:
\[ \begin{array}{|c|c|c|c|} \hline \text{Experiment} & [A]_0 \, (\text{M}) & [B]_0 \, (\text{M}) & \text{Initial rate} \, (\text{M/s}) \\ \hline I & 0.10 & 0.10 & 0.10 \\ II & 0.20 & 0.10 & 0.40 \\ III & 0.20 & 0.20 & 0.40 \\ \hline \end{array} \]
The total order and order in [B] for the reaction are respectively:
- KEAM - 2024
- Grignard’s reagents and their uses
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.