The soils that are fully laden with water i.e., water logged, are known are:
Hydrilla is a:
The water held tightly in a thin film by te soil particles is known as:
Thick cuticles on leaves are typical of plants growing in:
Sunken stomata are found in the leaves of:
Plants growing in extreme cold soil are:
Which of the following is not the characteristic feature of the anatomy of xerophytes?
The plankton is:
Among the plants listed, point out one that does not fit into biological group represented by other plants
In submerged hydrophytes, which of the following is present?
The storage capacity of a soil equals:
In Opuntia, the leaves are modified into:
Mechanical tissues and xylem are highly reduced in Hydrilla because:
Succulents are likely be found in:
Which of the following are plants of one group?
Field capacity is the extent to which a soil can hold:
Hydrophytes usually have:
Desert plants are generally:
Plants absorb from the soil:
Percentage of water left in the soil when a plant wilts is known as:
Deserts plants have longer root system because:
The stems of submerged water plant are soft and weak because:
Plants growing near sea shore will usually have xerophytic characters, like thick leaves, because:
Plants are killed in winter by frost:
The plant that has a characteristic component of the mangrove vegetation is:
Mucilagenous tissue and chlorenchymatous cortex are characteristic of:
Area where two communities overlap each other:
Alpine forests occur at an altitude:
Broad leaved deciduous forests are typical of:
Which one of the following pairs is mismatched?
Tropical dense forest is due to:
If less light falls on a pond surface:
Rhododendron is most prominent at an altitude of:
Rhododendron is characteristic of vegetation of:
Plants growing in xerophytic conditions usually have:
Major characteristics of the vegetation of a locality are controlled:
Plants grow sparsely in arid regions of the world:
Mangrove vegetation is found in:
The most striking difference between tropical rain forests and temperate forests is that:
Among the plants listed, point out one that does not fit into ecological group represented by the other plants:
Biotic components consist of:
Soil salinity is measured by:
Symbiosis is beneficial to:
Mycorrhiza is a symbiotic association between:
The zonels where no penetration of light occurs in a like:
Which one of the following factors is biotic?
The association of nodule bacteria with leguminous roots is known as:
The phenomenon of mimicry was first observed by:
Relationship between nitrogen fixing bacteria and a legume plant is described as:
Commensalism is a relationship between two organism in which:
Proximity of water level at low depths of soils results in development of:

The soil organisms are:

A. Harmful to the plants growing in the soil
B. Useful to plants growing in the soil
C. Neither harmful nor useful to plants growing in the soil
D. Both harmful as well as useful to plants growing on the soil

Correct Answer: Both harmful as well as useful to plants growing on the soil ✔

Last Updated: May 23, 2024