Biodiversity

Question 9:You are given a plot of land and are advised to plant the plants in Photograph 4.Explain how you will use the plants to keep your plot of land fertile. Answer:• Crop rotation is an agriculturally sustainable method of planting different types of crops on the same piece of land. • Legume plants are … Read more

Question 7:Suggest one way to produce a chemical poison that can be used to kill termites without harming other beneficial insects. Answer:• Termites live in symbiosis with a type of protozoa called Triconympha sp. • This protozoa lives in the intestines of the termite and secretes cellulase enzymes to digest wood (cellulose) which is absorbed … Read more

Question 3:Photograph 3 shows a type of fungus on a tree trunk.(a) Fungi were previously known as a plant. However, the fungus is now considered to be closer to the animals than to plants. Why are fungi classified into a separate kingdom and not into Plantae or Animalia? (b) Predict what would happen in our … Read more

Question 1:The taxonomy hierarchy for a domestic cat (Photograph 1) is shown in Table 1. (a) Based on Table 1, what is the scientific name of the domestic cat? (b) Using your answer in 1(a), explain the binomial nomenclature system which was introduced by Carolus Linnaeus. Answer:(a) Felis catus (b) In the binomial nomenclature system, … Read more

Question 1:Why are viruses not classified into one of the six kingdoms? Answer:When outside a living host cell, the virus exists as a crystal and is not considered a living thing because it does not carry out any life processes. Question 2:Why don’t parasites kill their hosts? Answer:If the host dies, the parasite can no … Read more

Question 1:Explain ecosystem diversity, species diversity and genetic diversity. Answer:Ecosystem diversity refers to the biotic community and ecological process in ecosystems on the land, in the sea and other aquatic environments. Species diversity refers to the variation and variability of organisms on Earth. Genetic diversity refers to the genes variation of an individual within a … Read more

Question 1:State two characteristics of organisms from the kingdom Fungi. Answer:Does not contain chlorophyll; cell wall made from chitin; produces spores; fungi cells arranged into a network of threads called hyphae. (Any two characteristics) Question 2:How is an organism classified based on the taxonomy hierarchy? Answer:Organisms in a domain can be divided into kingdoms which … Read more

Activity 8.1:AimTo collect information and present the main characteristics of organisms from each kingdom Procedure1. Work in pairs. 2. Collect information about the main characteristics of organisms from all six kingdoms. 3. Copy this table onto a large piece of paper and complete it. 4. Present your table in the class. Answer:Observations: