NCERT Solutions For Class 12 Biology Chapter 15: Biodiversity and Conservation

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NCERT Solutions for Class 12 Biology Chapter 15 Biodiversity and Conservation are provided in this article. It covers all the important definitions, concepts, and methodologies that will be really beneficial for the students appearing for CBSE Class 12 Exam 2022-23. The important topics that are included in this chapter are:

Expected no. of Questions: 1-2 questions of around 4 marks.

Download PDF: NCERT Solutions for Class 12 biology chapter 15 Biodiversity and Conservation

NCERT Solutions for Class 12 Biology Chapter 15

NCERT Solutions

Class 12 Biology Chapter 15 Biodiversity and Conservation: Important Topics

Biodiversity conservation is referred to as the protection, upliftment, as well as management of biodiversity, deriving sustainable benefits for present and future generations. In other words, it is the protection and management of biodiversity in order to obtain resources for sustainable development. Biodiversity is the variability of life on earth, which can be conserved in the following ways: In-situ Conservation and Ex-situ Conservation.

Biodiversity conservation consists of three main objectives:

To preserve the diversity of species
Sustainable utilization of species and ecosystem
To maintain life-supporting systems and essential ecological processes

Loss of Biodiversity

Biodiversity loss is the decline or disappearance of biological diversity, or the local reduction or loss of species in a certain habitat, leading to the loss of biological diversity. The term biodiversity or biological diversity refers to the number of genes, species, and individual organisms within a given species within a defined geographic area, ranging from the smallest ecosystem to the global biosphere.

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CBSE CLASS XII Related Questions

1.
(i) Differentiate between a DNA and RNA nucleotide.
(ii) Name the two types of bonds present within a single nucleotide.

View Solution

2.
Assertion (A) : The pyramid of biomass in a pond aquatic ecosystem is always inverted.
Reason (R) : The biomass of consumers like fishes far exceeds that of the producers like phytoplanktons.

Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
Assertion (A) is true, but Reason (R) is false.
Assertion (A) is false, but Reason (R) is true.

View Solution

3.
Assertion (A) : The two chains of DNA have antipolarity.
Reason (R) : In one chain of DNA, ribose sugar at \(5^{\prime}\) end consists of a free phosphate moiety, while at the other end, the ribose sugar has free \(3^{\prime}\) - OH group.

Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
Assertion (A) is true, but Reason (R) is false.
Assertion (A) is false, but Reason (R) is true.

View Solution

4.
Assertion (A) : Hardy-Weinberg principle says that allele frequencies in a population are stable.
Reason (R) : Hardy-Weinberg principle is applicable only when genetic drift does not occur.

Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
Assertion (A) is true, but Reason (R) is false.
Assertion (A) is false, but Reason (R) is true.

View Solution

5.
"Indo-Burma" is considered as a hotspot. What is meant by the term "hotspots" in biodiversity ? List two criteria used for determining a "hotspot". Name any two hotspots of India.

View Solution

6.
Monascus purpureus is a yeast used commercially in the production of which one of the following?

Ethanol
Streptokinase
Citric acid
Statins

View Solution

NCERT Solutions for class 12 biology chapter 15: Biodiversity and Conservation

NCERT Solutions for Class 12 Biology Chapter 15

Class 12 Biology Chapter 15 Biodiversity and Conservation: Important Topics

Loss of Biodiversity

CBSE CLASS XII Related Questions

1.
(i) Differentiate between a DNA and RNA nucleotide.
(ii) Name the two types of bonds present within a single nucleotide.

2.
Assertion (A) : The pyramid of biomass in a pond aquatic ecosystem is always inverted.
Reason (R) : The biomass of consumers like fishes far exceeds that of the producers like phytoplanktons.

3.
Assertion (A) : The two chains of DNA have antipolarity.
Reason (R) : In one chain of DNA, ribose sugar at \(5^{\prime}\) end consists of a free phosphate moiety, while at the other end, the ribose sugar has free \(3^{\prime}\) - OH group.

4.
Assertion (A) : Hardy-Weinberg principle says that allele frequencies in a population are stable.
Reason (R) : Hardy-Weinberg principle is applicable only when genetic drift does not occur.

5.
"Indo-Burma" is considered as a hotspot. What is meant by the term "hotspots" in biodiversity ? List two criteria used for determining a "hotspot". Name any two hotspots of India.

6.
Monascus purpureus is a yeast used commercially in the production of which one of the following?

Similar Biology Concepts

Comments

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NCERT Solutions for class 12 biology chapter 15: Biodiversity and Conservation

NCERT Solutions for Class 12 Biology Chapter 15

Class 12 Biology Chapter 15 Biodiversity and Conservation: Important Topics

Loss of Biodiversity

CBSE CLASS XII Related Questions

1.(i) Differentiate between a DNA and RNA nucleotide.(ii) Name the two types of bonds present within a single nucleotide.

2.Assertion (A) : The pyramid of biomass in a pond aquatic ecosystem is always inverted.Reason (R) : The biomass of consumers like fishes far exceeds that of the producers like phytoplanktons.

3.Assertion (A) : The two chains of DNA have antipolarity.Reason (R) : In one chain of DNA, ribose sugar at \(5^{\prime}\) end consists of a free phosphate moiety, while at the other end, the ribose sugar has free \(3^{\prime}\) - OH group.

4.Assertion (A) : Hardy-Weinberg principle says that allele frequencies in a population are stable.Reason (R) : Hardy-Weinberg principle is applicable only when genetic drift does not occur.

5."Indo-Burma" is considered as a hotspot. What is meant by the term "hotspots" in biodiversity ? List two criteria used for determining a "hotspot". Name any two hotspots of India.

6.Monascus purpureus is a yeast used commercially in the production of which one of the following?

Similar Biology Concepts

Comments

SUBSCRIBE TO OUR NEWS LETTER

1.
(i) Differentiate between a DNA and RNA nucleotide.
(ii) Name the two types of bonds present within a single nucleotide.

2.
Assertion (A) : The pyramid of biomass in a pond aquatic ecosystem is always inverted.
Reason (R) : The biomass of consumers like fishes far exceeds that of the producers like phytoplanktons.

3.
Assertion (A) : The two chains of DNA have antipolarity.
Reason (R) : In one chain of DNA, ribose sugar at \(5^{\prime}\) end consists of a free phosphate moiety, while at the other end, the ribose sugar has free \(3^{\prime}\) - OH group.

4.
Assertion (A) : Hardy-Weinberg principle says that allele frequencies in a population are stable.
Reason (R) : Hardy-Weinberg principle is applicable only when genetic drift does not occur.

5.
"Indo-Burma" is considered as a hotspot. What is meant by the term "hotspots" in biodiversity ? List two criteria used for determining a "hotspot". Name any two hotspots of India.

6.
Monascus purpureus is a yeast used commercially in the production of which one of the following?