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Soil is a mixture of

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Important Questions on Organisms and Population

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NTA Errorless Biology Volume-2>Chapter 17 - Organisms and Population>Ordinary Thinking>Q 25
Populations are said to be sympatric when ...... 
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NTA Errorless Biology Volume-2>Chapter 17 - Organisms and Population>Ordinary Thinking>Q 26

Match the following and choose the correct combination from the options given below

Column I (Population interaction) Column II
(Examples)
A Mutualism 1 Ticks on dogs
B Commensalism 2 Balanus and Chathamalus
C Parasitism 3 Sparrow and any seed
D Competition 4 Epiphyte on a mango branch
E Predation 5 Orchid Ophrys and bee

 

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NTA Errorless Biology Volume-2>Chapter 17 - Organisms and Population>Ordinary Thinking>Q 27
Which is the main causative factor of desertification
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NTA Errorless Biology Volume-2>Chapter 17 - Organisms and Population>Ordinary Thinking>Q 28
Ultraviolet radiation from sunlight cause the reaction that produce
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NTA Errorless Biology Volume-2>Chapter 17 - Organisms and Population>Ordinary Thinking>Q 30
Which of the following statements is incorrect
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NTA Errorless Biology Volume-2>Chapter 17 - Organisms and Population>Ordinary Thinking>Q 31

Column-I represent the size of the soil particles and ColumnII represents type of solid components. Which of the following is correct match for the Column I and Column II.

Column-I Column-II
A. 0.2 to 2.00 mm (i) Slit
B Less than 0.002 mm (ii) Clay
C 0.02 to 0.2 mm (iii) Coarse sand particle
D   (iv) Fine sand particle

 

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NTA Errorless Biology Volume-2>Chapter 17 - Organisms and Population>Ordinary Thinking>Q 32
Soil salinity is measured by
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NTA Errorless Biology Volume-2>Chapter 17 - Organisms and Population>Ordinary Thinking>Q 33
Which biological factor is responsible for poor vegetation in deserts?