Loam encompasses a variety of soil types, some granulated and nicely draining, while others may be thicker and have the consistency of mud. Most loam soils are a brown or black colour, making them ideal for gardens. It is often the most preferred type for plant growth and does well with just about any species. Large plants and trees, including maples and poplars, are both commonly found growing in loam soil. Loam is a combination of small rock particles, organic matter and nutrients, often in ideal combinations for healthy plant growth. The granular soil retains water very easily, yet the drainage is well. Loamy soil is composed of 40 % sand, 40% silt and 20% clay.

Correct Option: D

Loam encompasses a variety of soil types, some granulated and nicely draining, while others may be thicker and have the consistency of mud. Most loam soils are a brown or black colour, making them ideal for gardens. It is often the most preferred type for plant growth and does well with just about any species. Large plants and trees, including maples and poplars, are both commonly found growing in loam soil. Loam is a combination of small rock particles, organic matter and nutrients, often in ideal combinations for healthy plant growth. The granular soil retains water very easily, yet the drainage is well. Loamy soil is composed of 40 % sand, 40% silt and 20% clay.

Capillarity is the primary force that enables the soil to retain water, as well as to regulate its movement. The phenomenon of capillarity also occurs in the soil. In the same way that water moves upwards through a tube against the force of gravity; water moves upwards through soil pores, or the spaces between soil particles. Gravitational water occupies the larger soil pores (macro pores) and moves down readily under the force of gravity. Water in excess of the field capacity is termed gravitational water. Gravitational water is of no use to plants because it occupies the larger pores. It reduces aeration in the soil.

Correct Option: B

Capillarity is the primary force that enables the soil to retain water, as well as to regulate its movement. The phenomenon of capillarity also occurs in the soil. In the same way that water moves upwards through a tube against the force of gravity; water moves upwards through soil pores, or the spaces between soil particles. Gravitational water occupies the larger soil pores (macro pores) and moves down readily under the force of gravity. Water in excess of the field capacity is termed gravitational water. Gravitational water is of no use to plants because it occupies the larger pores. It reduces aeration in the soil.

Laterite has been derived from the Latin word ‘later’ which means brick. The laterite soil develops in areas with high temperature and heavy rainfall. This is the result of intense leaching due to heavy rain. Humus content of the soil is low because most of the micro organisms, particularly the decomposers, like bacteria, get destroyed due to high temperature.

Correct Option: C

Laterite has been derived from the Latin word ‘later’ which means brick. The laterite soil develops in areas with high temperature and heavy rainfall. This is the result of intense leaching due to heavy rain. Humus content of the soil is low because most of the micro organisms, particularly the decomposers, like bacteria, get destroyed due to high temperature.

Lagoon is a shallow stretch of water which is partly or completely separated from the sea by a narrow strip of land. In the case of coral reef, it is a channel of sea water between the reef and the main land. Lagoons are common coastal features around many parts of the world.

Correct Option: C

Lagoon is a shallow stretch of water which is partly or completely separated from the sea by a narrow strip of land. In the case of coral reef, it is a channel of sea water between the reef and the main land. Lagoons are common coastal features around many parts of the world.

A tide is the periodic rising and falling of Earth’s ocean surface caused mainly by the gravitational pull of the Moon acting on the oceans.The height of tides varies somewhat with the phases of the Moon. At New Moon and Full Moon, tides are higher because the Sun’s tidal force adds to the Moon’s. This is called “spring tide”.

Correct Option: D

A tide is the periodic rising and falling of Earth’s ocean surface caused mainly by the gravitational pull of the Moon acting on the oceans.The height of tides varies somewhat with the phases of the Moon. At New Moon and Full Moon, tides are higher because the Sun’s tidal force adds to the Moon’s. This is called “spring tide”.