A. Free floating hydrophyte
B. Submerged hydrophyte
C. Suspended hydrophyte
D. Floating and anchored hydrophyte
Related Mcqs:
- Mechanical tissues and xylem are highly reduced in Hydrilla because:
A. Water provides the support and there is no problem for the absorption and conduction of water
B. Otherwise the weight of these tissues would drown the plant
C. Of the anaerobic conditions created by submergence
D. Otherwise translocation of food would have been interrupted - The chemical produced by the host plant to protect themselves against fungal infection is:
A. Toxin
B. Hormone
C. Phytotoxin
D. Phytoalexin - Mycorrhiza is the:
A. Saprophytic association between fungus and the roots of seed plants
B. Parasitic association between fungus and the roots of seed plant
C. Symbiotic association between fungus and the roots of seed plants
D. All of the above - Which one has feebly developed root system and numerous air cavities?
A. Xerophytes
B. Halophytes
C. Hydrophytes
D. Mesophytes - The lichens show a mutualistic relationship originating from:
A. Obligate parasitism
B. Facultative parasitism
C. Halotism
D. None of these - Mark the free floating hydrophyte:
A. Sagittaria
B. Typha
C. Najas
D. Spirodela - The L- and H-layers are differentiated in:
A. Mull
B. Mor
C. Peat
D. Muck - Which of the following horizons has the maximum amount of organic matter?
A. Horizons A2 and B
B. Horizon B only
C. Horizon A1
D. Horizons B and C - Plants growing in xerophytic conditions usually have:
A. Feebly developed root system
B. Deep and much branched root system
C. Well developed leaves
D. III developed vascular system - Sunken stomata are found in the leaves of:
A. Nelumbium
B. Hydrilla
C. Mango
D. Nerium
The correct answer to the question: "Hydrilla is a:" is "Submerged hydrophyte".