NEET BIOLOGY

Detailed explanation-1: -So, the correct answer is ‘Archaebacteria and Eubacteria’

Detailed explanation-2: -The six most abundant ions of seawater are chloride (Cl−), sodium (Na+), sulfate (SO24−), magnesium (Mg2+), calcium (Ca2+), and potassium (K+). By weight these ions make up about 99 percent of all sea salts.

Detailed explanation-3: -The term deep sea creature refers to animals that live below the photic zone of the ocean. These creatures must survive in extremely harsh conditions, such as hundreds of bars of pressure, small amounts of oxygen, very little food, no sunlight, and constant, extreme cold.

Detailed explanation-4: -Blue green algae can also dwell in the deep sea as they require blue and green wavelengths of light to sustain, since blue and green components of light have short wavelength and high energy, these light waves can penetrate to the deep easily and enable the survival of Blue-green algae.

Detailed explanation-5: -The most well known of these so-called chemoautotrophic or chemosynthetic bacteria are those found at hydrothermal vents in the deep sea.