Tag: plant taxonomy

Sugar cane is a perennial tropical grass with tall stout jointed stems from which sugar is extracted. Sugarcane is a flowering plant belonging to the monocotyledonous group of angiosperms. Angiosperms are also called as seed plants or flowering plants.

Answer is B. Thallophyta

Plants are sedentary organisms, where as animals show movement due to the presence of locomotory organs.

So, the statement is ‘True’.

Plants are green nonmotile stationery living beings that grow in the soil. These are multicellular and has specialized tissues and organ to perform the various function of the plant body. They helps to prepare their food by photosynthesis with the help of pigments chlorophyll a and chlorophyll b.

Organisms of kingdom fungi have multicellular or loose tissue. In organisms of kingdom Plantae, the body organisation is tissue or organ grade whereas body organisation in kingdom Animalia is tissue or organ or organ system. In unicellular organisms, all functions like digestion, respiration and reproduction are performed by a single cell. In the complex body of multicellular animals, the same basic functions are carried out by different groups of cells in a well-organised manner. The body of a simple organism like Hydra is made of different types of cells and the number of cells in each type can be in thousands. The human body is composed of billions of cells to perform various functions. In multicellular organisms of fungi, plant and animal kingdoms, a group of similar cells perform a specific function. Such an organisation is called tissue.

The book 'Structure and Reproduction of the Algae' describing taxonomy of algae is written by Felix Eugen Fritsch FRS. He was a British biologist. He gave very comprehensive and authoritative account of classification of algae based on a variety of characters as pigmentation, stored food matter, habit, habitat and method of reproduction. 

X can be thallophytes which have an undifferentiated plant body, that is, in the form of an undivided thallus. Algae are thallophytes belonging to kingdom Plantae. Fungi belong to kingdom Fungi. Y can be pteridophytes which are seedless vascular plants and differentiated into true stern, leaves and roots. Bryophytes are simple land plants with no true roots. The plant body is thallose or foliose. Z can be angiosperms or gymnosperms since both of them have seeds. However, angiosperms have seeds covered by fruit whereas gymnosperms have naked seeds. So, the correct answer is option D. 

Bryophytes are the plants in which the life cycle has two phases gametophytic and sporophytic, alternating to each other. This phenomenon is called alternation of generation. Gametophytic phase is haploid, autotrophic, gametes(male and female) formative and responsible for the sexual reproduction. Sporophytic phase is the subsidiary phase which is diploid, heterotrophic and spore formative and responsible for the asexual reproduction. For example, Riccia, Funaria.