Question
a) Physiology and anatomy b) Ecology and pathology c) Division and phylum (6marks) 2. Outline the economic significance of botany to man. 3. Highlight the major properties of plants. 4. Enumerate the physiological importance of the nucleus. 5. Highlight the economic importance of protists. (5marks) 6. Explain diffusion and state three conditions necessary for the occurrence of diffusion. (5marks) 7. Highlight five characteristics of the division chlorophyte. (4marks) 8. With the help of a suitable example in plants, state the rules governing naming of plants. (5marks)
Solution
4.2
(238 Votos)
Thiago
Profissional · Tutor por 6 anos
Resposta
1. The correct answer is c) Division and phylum. These terms are used in the classification of plants. Division refers to a major taxonomic rank used in the classification of plants, while phylum is a higher taxonomic rank used in the classification of organisms, including plants.2. Botany has significant economic importance to man. It provides us with food, medicine, and raw materials for industries. Plants are the primary source of food for humans and animals. Many medicines are derived from plants. Additionally, plants provide raw materials for industries such as paper, textiles, and biofuels.3. The major properties of plants include:- They are multicellular organisms.- They have cell walls made of cellulose.- They contain chloroplasts for photosynthesis.- They reproduce through seeds or spores.- They have specialized tissues for transport of water, nutrients, and food.4. The nucleus is important for the physiological functioning of a cell. It contains the genetic material (DNA) that controls and regulates the activities of the cell. The nucleus is responsible for cell division, growth, and differentiation. It also plays a role in the synthesis of proteins and the production of hormones.5. Protists have economic importance in various ways. They are used in the production of food, such as algae being used as a food source. They are also used in the production of medicines, such as the use of certain protists in the development of drugs for treating diseases. Additionally, protists are used in research and education to study cellular processes and genetics.6. Diffusion is the movement of molecules from an area of higher concentration to an area of lower concentration. The necessary for the occurrence of diffusion are:- There must be a concentration gradient, meaning there is a difference in the concentration of molecules between two areas.- The molecules must be able to move freely, meaning there are no physical barriers preventing their movement.- The molecules must be small enough to move through the medium in which diffusion is occurring.7. The five characteristics of the division chlorophyte include:- They are primarily aquatic plants.- They have chloroplasts for photosynthesis.- They reproduce through spores.- They have a life cycle that includes both a multicellular haploid stage and a multicellular diploid stage.- They exhibit a wide range of forms, from simple single-celled organisms to complex multicellular structures.8. The rules governing the naming of plants are based on the International Code of Nomenclature for algae, fungi, and plants (ICBN). According to these rules, the name of a plant consists of two parts: the genus name and the species name. The genus name is always capitalized and italicized, while the species name is not capitalized and is also italicized. For example, in the name "Rosa canina," "Rosa" is the genus name and "canina" is the species name.