Arrange the correct sequence of ecological hierarchy starting from lower to a higher level.
Important Questions on Principles of Ecology
In Ecology the study of an individual species is called
(i) Community ecology
(ii) Autecology
(iii) Species ecology
(iv) Synecology
Read the given statements and select the correct option.
(i) Hydrophytes possess aerenchyma to support themselves in water.
(ii) Seeds of Viscum are positively photoblastic as they germinate only in presence of light.
(iii) Hygroscopic water is the only soil water available to roots of plant growing in soil as it is present inside the micropores.
(iv) High temperature reduces use of water and solute absorption by roots.
Read the given statements and select the correct option.
i) Loamy soil is best suited for plant growth as it contains a mixture of silt, sand and clay.
ii) The process of humification is slow in case of organic remains containing a large amount of lignin and cellulose.
iii) Capillary water is the only water available to plant roots as it is present inside the micropores.
iv) Leaves of shade plants have less total chlorophyll per reaction centre, low ratio of chlorophyll a and chlorophyll b are usually thinner leaves.
In soil water available for plants is
i) Total soil water content in soil is called _____.
ii) Soil water not available to plants is called _____.
iii) Soil water available to plants is called _____.
Column I represent the size of the soil particles and Column II represents type of soil components. Which of the following is correct match for the Column I and Column II.
| Column I |
Column II |
| I) 0.2 -2.00 mm |
i) Slit soil |
| II) less than 0.002mm. | ii) Clayey. |
| III)0.002 to 0.02 mm. | iii) Sandy soil. |
| IV) 0.002 to 0.2 mm. | iv) loamy soil. |
