Home
Class 12
BIOLOGY
State true or false statements. Corret e...

State true or false statements. Corret each false statements to make it true.
(i) Within a species, genetic diversity occurs in the differences of alleles, entire genes and chromosomal structures.
(ii) 1000 varities of rice occur in India due to genetic variatrion.
(iii) Ecosystem diversity is high in Norway because of the occurrence of a large number of ecosystems.

Text Solution

Verified by Experts

The correct Answer is:
(i) TRUE
(ii) Flase , more than 50,000
(iii) Flase, Ecomsystem diversity is low in Norway because of the ocurrence of a small number of ecosystems.
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • BIODIVERSITY AND CONSERVATION

    AAKASH INSTITUTE|Exercise EXERCISE|20 Videos
  • BIODIVERSITY AND CONSERVATION

    AAKASH INSTITUTE|Exercise SECTION - A (Objective Type Questions)|34 Videos
  • BIODIVERSITY AND CONSERVATION

    AAKASH INSTITUTE|Exercise SECTION - D (Assertion-Reason Type Questions)|10 Videos
  • ANIMAL KINGDOM (GENERAL ACCOUNTS & NON-CHORDATES)

    AAKASH INSTITUTE|Exercise Assignment (Section-D)|10 Videos
  • BIOLOGICAL CLASSIFICATION

    AAKASH INSTITUTE|Exercise Assignment (Section-D) Assertion - Reason Type Questions|15 Videos

Similar Questions

Explore conceptually related problems

Identify true or false statements. Correct each false statement to make it true. (i) Number of species in a community really matter to the functioning of the ecosystem. (ii) David Tilman proved that decreased diversity contributed to higher productivity. (iii) Rich biodiversity is not essential for ecosystem health but required for survival of human race of earth. (iv) Species which are dangerously harmful beings and their interests can be thought of deliberate extinction.

State true or false and correct each flase statement to make it true (i) The ploidy level of female gametophyte is diploid in flowering plants (ii) Integumented megasporangum is also called as ovary (iii) The embryo sac lies at chalazal end of ovule

Knowledge Check

  • Choose the correct statement from the following. A. The western ghats have a greater amphibian species diversity than eastern ghats. B. Diversity exists at all levels of biological organization ranging from macromolecules within cells to biomes. C. Rauwolfia vomitoria show genetic variation in terms of potency and concentration of the potency produced. D. Norway has greater ecosystem diversity than India.

    A
    A and B only
    B
    B and D only
    C
    A,B and C only
    D
    A,B,C and D
  • Choose CORRECT statements from the following. (P) The western Ghats have greater amphibian species diversity than the Eastern Ghats (Q) Diversity exist at all levels of biological organization ranging from macromolecules within cells to biomes. (R) Rauwolfia vomitoria show the genetic variation in terms of potency and concentration of the reserpine produced. (S) Norway has a greater ecosystem diversity than India .

    A
    P and Q only
    B
    Q and S only
    C
    P,Q and R only
    D
    S only
  • Read the following five statements (A to E) about biodiversity and select the option with all correct statements: (A) India has more than 50,000 genetically different strains of rice ,and 1,000 varieties of mango. (B) The Western Ghats have a lesser amphibian species diversity than the Eastern Ghats . ( c ) Scandinavian country like Norway has a greater ecosystem diversity than India. (D) Biodiversity and its conservation are now vital environmental issues of international concern . (E) More and more people around the world the world begin to realise the critical importance of biodiversity for our survival and well - being on this planet.

    A
    (A),(D) and ( E )
    B
    (B), ( c) and ( E )
    C
    (A), (C ) and (D)
    D
    (A), (c ) and (D)
  • Similar Questions

    Explore conceptually related problems

    State true/false in the following statements. Correct each false statements to make it true. (i) The in-situ conservation strategies emphasise protection of whole ecosystem, therfore its biodiversity at all levels is protected. (ii) Biodiversity hotspots put together cover 2.4% of the earth's land area. (iii) In india, ecologically unique and biodiversity rich regions are legally protected as sanctuaries, national parks and biosphere reserves. (iv) In Uttar Pradesh, the sacred groves are the last refuges for a large number of rare and threatened plants.

    Indicate whether the following statements are true or false. Correct each faqlse statement to make it true. (i) Mass extinction is the extermination of a large number of species due to catastrophers. (ii) IUCN Red list (2004) documents the extinction of 359 animal species. (iii) Quagga from Africa and Stellers sea cow from America have been extinct in last few years. (iv) Anthropogenic extinction is 10-100 times more faster than the rate of natural extinctions.

    Identify true or false in the following statements : (i) Team biodiversity was popularised by Edward Wilson to describe the combined hetrogeneity at all levels of biological organisation. (ii) More than 5000 genetically different varieties of mango occur in India. (iii) Western Ghats have greater amphibian species diversity as compared to Eastern Ghats. We could lose all wealth of biodiversity in less than two decades if the present rates of species losses continue.

    Mark whether the following statements are true or false. (i) Entire collection of plants or seeds having all the diverse alleles for all genes in a given crop is called gene pool. (ii) A wide range of pathogens affect the yield of cultivated crop species, especially in tropical climates. (iii) High aspartic acid, low nitrogen and sugar content in maize lead to resistance to aphids. (iv) Biofortification is the most practical means to improve public health.

    Consider the following statements and select the correct option stating which ones are true (T) and which ones are false (F). (i) Pyramid of biomass is upright in the forest ecosystem and inverted in the grassland ecosystem. (ii) Pyramid of numbers is inverted in grassland and upright in aquatic ecosystem. Pyramid of energy depicts the rate of energy flow or productivity at successive trophic levels . (iv) Ecological pyramids have no place for detritivores and decomposers though they play an important role in an ecosystem.