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Climax communities in a biotic succession are usually characterized by
Grasses recover quickly from bush fires in the savanna because of their
The causative agent of typhoid fever is
An organism which exhibits extracellular digestion is
A characteristic that best exemplifies the evolutionary advancement of mammals over other vertebrates is the
One primitive feature of the coelenterates is the possession of
Which of the following vertebrates has the most simple structured heart?
The evidence that supports the advancement of ferns over mosses is derived from
The dominant phase in the life cycle of a bryophyte is the
The role of the Golgi complex in an eukaryotic cell is to
The part of the mammalian skin involved in temperature regulation is the
The intensity of competition among animals in a given area will increase with
Mendel's second law of inheritance states that
One advantage of variation in a species population is that individuals
The two normal types of sex chromosomes are
In the transverse of a dicot stem, the region lying between the endodermis and the vascular bundle is the
The mammalian vein which starts with and ends in a capillary network is the
Which of the following produces both hormones and enzymes
Water is necessary for a germinating seed because it
The formation of water in the tissue respiration results from the