Q. No.The most effective biologic control of insects is achieved by:
1. insectivorous birds 2. biocides 3. parasitoid wasps 4. parasitic nematodes
Match each item in Column I with one in Column II and choose the correct answer from the codes given below:
|
Column I |
Column II |
||
|
A. |
Genetic diversity |
a. |
Western ghats have greater amphibian diversity than eastern ghats |
|
B. |
Species diversity |
b. |
India has more than 50000 genetically different strains of rice |
|
C. |
Ecological diversity |
c. |
India has more ecosystems than Norway |
Codes :
| A | B | C | |
| 1. | a | b | c |
| 2. | b | a | c |
| 3. | c | b | a |
| 4. | b | c | a |
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Identify the incorrectly matched pair:
|
1. |
Dodo |
Mauritius |
|
2. |
Quagga |
Africa |
|
3. |
Thylacine |
Australia |
|
4. |
Stellar’s sea cow |
USA |
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Identify the incorrectly matched pair:
|
1. |
Dodo |
Migratory bird |
|
2. |
Quagga |
A relative of Zebra |
|
3. |
Thylacine |
Largest carnivorous marsupial |
|
4. |
Stellar’s sea cow |
Aquatic mammal |
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In a co-evolved highly specific plant-pollinator obligatory mutualism, if one of the members gets extinct, the other most likely:
| 1. | would increase in number but the diversity in the population would reduce |
| 2. | would increase in number and the diversity in the population would increase |
| 3. | would decrease in number and the diversity in the population would reduce |
| 4. | also go extinct |
Parthenium hysterophorus:
| I: | is also called as carrot grass or the gajar grass. |
| II: | is a common invasive species in India and came as a contaminant with wheat |
| III: | produces allelopathic chemicals |
| IV: | produces pollens that are common cause of allergies in humans |
1. Only I, II and III are correct
2. Only I, II and IV are correct
3. Only II, III and IV are correct
4. I, II, III and IV are correct
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Zygogrammabicolorata is:
1. an invasive species in India that has disrupted many aquatic ecosystems
2. a beetle introduced in India to biocontrol carrot grass
3. a very important decomposers in polar regions
4. a threatened species of amphibian in western ghats of India
We all know that water hyacinth is an invasive plant that has caused havoc in many water bodies in our country. But it has some usefulness as well. This includes:
I. Substrate for biogas production
II. Bio cleaning of industrial waters
III. Source of effective antipyretic
| 1. | Only I and II | 2. | Only I and III |
| 3. | Only II and III | 4. | I, II and III |
Exploring molecular, genetic and species-level diversity for products of economic importance is called as:
| 1. | Molecular pharming | 2. | rDNA technology |
| 3. | Bioprospecting | 4. | Bioharvesting |
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