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111.

Mark the rooted submerged hydrophyte:

A.	Marsilea	B.	Utricularia
C.	Vallisneria	D.	Monochoria

112.

Which of the following is a submerged floating hydrophyte?

A.	Tpha	B.	Trapa
C.	Potamogeton	D.	Ceratophyllum

113.

The abbrevation CEC of soil broadly refers to:

A.	Cation storage capcity	B.	Reversible bending of cations
C.	Excess of monovalent cations	D.	Excess of polyvalent cations

114.

The term sub-soil generally refers to:

A.	Horizon-C	B.	Horizon-A
C.	Horizon-R	D.	Horizon-B

115.

The ration of volume of pores in the soil to the total soil volume is referred to as:

A.	Pore frequency ratio	B.	Pore density ration
C.	Pore abundance ratio	D.	Pore space ratio

116.

The science dealing with study of soil is called:

A.	Geology	B.	Pedology
C.	Both (a) & (b)	D.	None of these

117.

In coarse textured soils:

A.	There is no soil air	B.	Water retaining capacity is high
C.	Pore space is narrow	D.	Pore frequency is low

118.

Melanization generally involves the following zone:

A.	Horizon-B	B.	Horizon-A
C.	Horizon-C	D.	All of these

119.

The acidity of soil is primarily due to

A.	H+	B.	AI+3
C.	Both (a) & (b)	D.	H+ and Zn+2

120.

The term 'holard' refers to:

A.	Gravitational water	B.	Capillary water
C.	Water holding capacity	D.	Field capacity