Diversity in Living Organisms

Both prokaryotes and eukaryotes utilize DNA as their genetic material and rely on ribosomes to synthesize proteins, making both statements A and B correct.

Prokaryotes are organisms without a nucleus or membrane-bound organelles, including bacteria and cyanobacteria. Algae and fungi are eukaryotes. Viruses are not cellular and do not fit either category. The option has a typo: cynobacteria should be cyanobacteria.

Viruses are considered acellular because they lack the basic cellular machinery, such as cytoplasm, organelles, and independent metabolic processes, required to be classified as a cell.

Bacteria are generally much smaller than eukaryotic cells like those of yeast, fungi, or protozoa, often measuring only a few micrometers in size.

Movement is a physical phenomenon that can be observed in both living things (like animals) and non-living things (like cars or clouds). The other options are biological processes exclusive to living organisms.

Hydra is a multicellular organism, whereas Amoeba, Paramecium, and Bacteria are classic examples of unicellular organisms.

Arthropods, like most complex animals, exhibit bilateral symmetry, meaning their bodies can be divided into two similar halves along a single plane.

A fastidious organism is one that has complex or specific nutritional requirements for growth. It cannot grow on simple or general-purpose media.

 Classification of kingdom protista is mainly based on locomotory organs. Flagella and cillia are the locomotory organs of protistans.

 The thylakoid lipid bilayer shares characteristic features with prokaryotic membranes and the inner chloroplast membrane. For example, acidic lipids can be found in thylakoid membranes, cyanobacteria and other photosynthetic bacteria and are involved in the functional integrity of the photosystems.

 Dictyosomes are not present in Rhizobium. 

 Nuclear dimorphism is a term referred to the special characteristic of having two different kinds of nuclei in a cell. This feature is observed in protozoan ciliates.

Euglenoids have two photosensitive structures: eye spot and paraflagellar body.

All are the epithiliat tissues.

  Pilin refers to a class of fibrous proteins that are found in pilus structures in bacteria. Bacterial pili are used in the exchange of genetic material during bacterial conjugation.