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By chemical composition the humus has maximum percentage of:
Related MCQs
The L- and H-layers are differentiated in:
Amount the following water plants, heterophylly is found in:
The mesofauna of the soil is constituted by:
The term ‘ecard’ refers to:
Which of the following is a malacophyllous xerophyte?
Mark the correct relationship:
Halophytes growing on mud are called:
Plants growing in marsh are called:
Mark the helophyte:
Plants growing on desert and steppe are called:
Plants growing on rocks are called on:
Plants growing on externally cold soil are called:
The mangrove plants are generally characterised by:
Mark the rooted submerged hydrophyte:
The mesophytes are characterised by:
Plant groups growing in zones where high temperature alternates with low temperature are called:
In which of the following groups, all the plants belong to the same category?
The leaves are absent in the xerophyte:
Which of the following feature is found in xerophytes?
When a plant first begins to wilts permanently in a pot, its 54.5 gms of soil has 4.5 gms of water. The PWP of this soil is:
Euhalophytes grow where the concentration of NaCl ranges:
Plants growing on sand and gravel are called:
Which of the following is a mangrove plant?
Mark the free floating hydrophyte:
Magnolia and oaks occur in the following zone:
Mark the true xerophyte:
The temperature based zone at an altitude of 10,000 is:
The orange and red wave lengths of light are able to penetrates in a sea upto a depth of:
The alpine forests are classed under the plant group called:
The heliophytes are characterised by:
When a plant of hot climate is transferred to colder regions, it gets an injury called:
In western Himalayas, the Betula trees usually occur in:
The heliophytes possess:
Flowering is induced if germinating seeds are exposed to:
The composition of soil air is affected by:
Albido value refers to:
Plants growing near the sea whore are generally resistant to:
The albido value of a forest is around:
Plants growing in rock crevices are called:
The equatic thermal strata where no temperature gradients are observed is called:
The ultraviolet radiations are able to peretreate in a sea as deep as:
The optimum temperature for seedling growth in the upper gangetic plains is around:
The facultative heliophytes are infact:
The heliophytes are characterised by:
The classification of plant groups on the basis of temperature differentiating four zone such as megatherms was proposed by:
Which of the following is a short day plant?
The percentage of argon in the atmosphere is:
The percentage of light from total solar input utilized by plants:
Plants growing in alpine zone are dwarf due to:
According to Geiger, the percentage of light reflected by the clouds is:
An anatomical features, which exclusively develops to counter high velocity of wind:
By chemical composition the humus has maximum percentage of:
A. Nitrogen
B. Oxygen
C. Carbon
D. Hydrogen
Correct Answer:
Carbon
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Last Updated:
May 22, 2024