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Which of the following is incorrect rega...

Which of the following is incorrect regarding biodiversity ?
I. Species diversity is highest in poles and decreases towards tropics
II. Stable community shown more productivity
III. Sacred groves are a type of ex situ conservation
IV. More solar energy available in tropics contributes to its higher productivity .

A

I and IV

B

I , III and IV

C

II and III

D

I and III

Text Solution

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The correct Answer is:
D
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Select the reasons why tropical regions have more biodiversity than temperate regions . 1. Tropical latitudes have remained relatively undisturbed for millions of years . 2. Temperate environments, unlike tropical ones , are less seasonal , relatively more constant and predictable . 3 . Temperate regions were subjected to frequent glaciations in the past. 4. There is more solar energy available in the tropics which contributes to higher productivity .

What is so special about tropics that might account for their greater biological diversity? a. Unlike temperate regions subjected to frequent glaciations in the past, tropical latitudes have remained relatively undisturbed for millions of years and thus, had a long evolutionary time for species diversification. b. Temperate environments, unlike tropical ones, are less seasonal, relatively more constant and predictable. Such constant environments promote niche specialization and lead to a greater species diversity. c. There is more solar energy available in the tropics, which contributes to higher productivity, this in turn might contribute indirectly to greater diversity.

Which of the following statement/is /are wrong? I. Communities with more species, generally, tend to de more stable than those with less species. II. A stable community should show too much variation in productivity from year to year. III. The colonisation of tropical pacific Islands by humans is said to have led to the extinction of more than 2,000 species of native birds. IV. The accelerated rates of species extinctions that the world is facing now have nothing to do with human activities. V. The biological wealth of our planet has been declining rapidly and the accusing finger is clearly pointing to human activities .

Which of the following statement/s regarding deforestation is/are wrong? I. Deforestation is the conversion of forested areas to non-forested ones. II. A number of human activitis contribute to deforestation. III. Deforestation increases biodiversity due to habitat conservation. IV. One of the major reasons is the conversion of forest to agricultural land so as to feed the grwoing human population. V. Almost 40 per cent forests have been lost in the tropics, compared to only 1 per cent in the temperate region.

Select incorrect statements w.r.t. greater biological diversity in tropics (A) Tropical latitudes have remained relatively undisturbed for millions of yeasrs and thus had a long evolutionary time for species diversification. (B) Tropical enviroments are more seasonal and less predictable than temperates. (C) There is more solar available which contributes to higher productivity.

Which two of the following statements are incorrect regarding in vitro fertilisation ? (i) In this method, ova from the wife/donor female and sperms from the husband/donor male are induced to form zygote in the uterus (ii) If the embryo is having 2 blastomeres, it is transferred into the uterus (iii) If the embryo is with more than 8 blastomeres, it is transferred into the uterus. (iv) The baby thus produced is called test tube baby.

Which of the following statements regarding biodiversity hotspots are incorrect? (i) High endemism (ii) High level of species richness (iii) Total number is 34 in the world (iv) Five of these occur in India (v) High alien species invasion (vi) Cover less than 2% of the earth's land area, but if properly conserved, they can reduce extinctions by about 30%

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