Tag: biodiversity on earth and in india

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Multiple choice zoology biodiversity, classification and conservation levels of biodiversity environmental conservation and biodiversity biodiversity on earth and in india

Write the correct sequence of genetic diversity.

  1. Kingdom $\rightarrow$ species $\rightarrow $chromosomes$ \rightarrow $genes $\rightarrow$ nucleotides
  2. Population $\rightarrow$species $\rightarrow$ chromosomes $\rightarrow$ genes $\rightarrow$ nucleotides.
  3. Species $\rightarrow$ genes $\rightarrow$population $\rightarrow $ chromosomes$ \rightarrow $ nucleotides
  4. Kingdom $ \rightarrow$ population $\rightarrow$ species $\rightarrow$ genes $\rightarrow$ chromosome $\rightarrow$ nucleotides
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Genetic diversity is the diversity in the number and types of genes as well as chromosomes present in different species and variations in the gene and their alleles in the same species.
Population $\rightarrow $Species $\rightarrow $Chromosomes $\rightarrow $Genes $\rightarrow $Nucleotide is the correct sequence of genetic diversity.

Multiple choice zoology biodiversity, classification and conservation levels of biodiversity environmental conservation and biodiversity biodiversity on earth and in india

Which of the following ecosystems exhibits maximum genetic variations?

  1. Tropical rain forests

  2. Tropical evergreen forests

  3. Coniferous forests

  4. Temperate forests
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Species diversity or genetic variation increases as one proceeds from high altitude to low altitude and high latitude to low latitude. Tropical rain forests are wet and dense. They exhibit maximum genetic variations due to increased temperature and rainfall.  They show high animal and plants biodiversity. 

Thus, the correct answer is 'Tropical rain forests.'

Multiple choice zoology biodiversity, classification and conservation levels of biodiversity environmental conservation and biodiversity biodiversity on earth and in india

Which of the following helps in maintaining species diversity in a community?

  1. Omnivores

  2. Predators

  3. Herbivores

  4. Facultative parasites
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Species diversity is defined as the number of different species in a given community. The species diversity in a community is maintained by predators. Predators are organisms that feed on prey. They can increase, decrease or leave unchanged species diversity. They increase species diversity by preying on competitive dominant species and reduce species diversity by reducing consumer pressure on foundation species.

Thus, the correct answer is 'Predators.'

Multiple choice zoology biodiversity, classification and conservation levels of biodiversity environmental conservation and biodiversity biodiversity on earth and in india

Let no one species encroach over the right and privileges of other species is the stanza from

  1. Atharva Veda

  2. Isha Upanishad

  3. Kautilyas Arthashastra

  4. Bhagvat Geeta
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Isha Upanishad is one of shortest Upanishads, which is embedded as the final chapters of Shukla Yajurveda, the following stanza is found in this upanishad.

So, the correct answer is 'Isha Upanishad'

Multiple choice zoology biodiversity, classification and conservation levels of biodiversity environmental conservation and biodiversity biodiversity on earth and in india

Species diversity increases as one proceeds from

  1. High altitude to low altitude and high latitude to low latitude

  2. Low altitude to high altitude and high latitude to low latitude

  3. Low altitude to high altitude and low latitude to high latitude

  4. High altitude to low altitude and low latitude to high latitude
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

  • Species diversity increases as one proceeds from high altitude to low altitude and high latitude to low latitude. The temperature and seasonal variability increases with increased altitude and decreased latitude. Hence, this results in higher species diversity in these areas.

Thus, the correct answer is 'High altitude to low altitude and high latitude to low latitude.'

Multiple choice zoology biodiversity, classification and conservation levels of biodiversity environmental conservation and biodiversity biodiversity on earth and in india

Gymnosperm species known from India is

  1. 119

  2. 209

  3. 64

  4. 48
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Gymnosperms mean naked seeds; their ovules are naked and freely exposed to pollination, and the fertilized seeds are not enclosed by carpels. Great biodiversity exists on our planet. Millions of living plants and animal species are flourishing on Earth. An approximate of 1.7 million organisms are known to exist. 64 gymnosperm species are known from India.

So, the correct answer is '64'.

Multiple choice zoology biodiversity, classification and conservation levels of biodiversity environmental conservation and biodiversity biodiversity on earth and in india

A species spread over a large tract with varied environmental conditions will have

  1. Higher genetic diversity

  2. Uniform gene pool

  3. Little genetic diversity

  4. Either B or C
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The variety and variability of living organisms (both plants and animals) are known as biodiversity. The variation measured by biodiversity is at the genetic, species, and ecosystem level. Gene-based diversity is known as genetic diversity. It is a way for populations to adapt to changing environments. A species spread over a large tract with varied environmental conditions will have higher genetic diversity.

So, the correct answer is 'Higher genetic diversity'.

Multiple choice zoology biodiversity, classification and conservation levels of biodiversity environmental conservation and biodiversity biodiversity on earth and in india

In India, we find mangoes with different flavours, colours, fibre content, sugar content and shelf life. The large variation is due to 

  1. Genetic diversity

  2. Species diversity

  3. Induced mutations

  4. Hybridisation
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Genetic diversity represents the total number of genetic characteristics in the genetic makeup of a species. Whereas, the genetic variability describes the tendency of genetic characteristics to vary. This diversity lets the population adapt to changing environments. For example, In India, we find mangoes with different flavors, colors, fiber content, sugar content and shelf life. The great variation is due to the genetic diversity.
So, the correct answer is 'Genetic diversity'.
Multiple choice zoology biodiversity, classification and conservation levels of biodiversity environmental conservation and biodiversity biodiversity on earth and in india

Beta diversity is diversity

  1. In a community

  2. Between communities

  3. In mountain gradient

  4. On a plain
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Beta diversity is the diversity present between the communities. It is also the rate of replacement of species along a gradient of habitats/communities. Whereas, the local species pool is known as alpha diversity and the diversity present in the ranges of communities is known as Gamma diversity.

In general, Gamma diversity=Alpha diversity x Beta diversity.
So, the correct answer is 'Between communities'.

Multiple choice zoology biodiversity, classification and conservation levels of biodiversity environmental conservation and biodiversity biodiversity on earth and in india

The relation between species richness and area is correctly depicted by

  1. log S = log C - Z log A

  2. log S = Z log A

  3. log S = log C + Z log A

  4. log S = log C

  5. log C = log S + Z log A
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The relationship between the area of a habitat, or of part of a habitat, and the number of species found within that area is described by the species-area curve. It says that log S = log C + Z log A. Here S is the number of species, A is the habitat area, and Z is the slope of the species-area relationship. Larger areas tend to contain larger numbers of species.
So, the correct answer is 'log S = log C + Z log A'.