NB: This is a BIOLOGY (SEPARATES) ONLY lesson Plant defence responses lesson created in accordance to the NEW AQA Specification (9-1). Includes: slide animations, embedded videos, differentiated questions, answers have also been included within the slides. This resource is NOT suitable for combined science students. AQA spec link: 4.3.3.2 Relevant chapter: B5-Communicable diseases . AQA Biology third edition textbook-Page 94-95. Students should be able to describe physical and chemical plant defence responses. Physical defence responses to resist invasion of microorganisms: • Cellulose cell walls. • Tough waxy cuticle on leaves. • Layers of dead cells around stems (bark on trees) which fall off. Chemical plant defence responses: • Antibacterial chemicals. • Poisons to deter herbivores. Mechanical adaptations: • Thorns and hairs deter animals. • Leaves which droop or curl when touched. • Mimicry to trick animals.

NB: This is a BIOLOGY (SEPARATES) ONLY lesson More about plant diseases lesson created in accordance to the NEW AQA Specification (9-1). Includes: slide animations, embedded videos, differentiated questions, answers have also been included within the slides. This resource is NOT suitable for combined science students. AQA spec link: 4.3.3.1 Relevant chapter: B5-Communicable diseases . AQA Biology third edition textbook-Page 92-93. Plant diseases can be detected by: • stunted growth • spots on leaves • areas of decay (rot) • growths • malformed stems or leaves • discolouration • the presence of pests. Identification can be made by: • reference to a gardening manual • taking infected plants to a laboratory to identify the pathogen • using testing kits that contain monoclonal antibodies. Plants can be infected by a range of viral, bacterial, and fungal pathogens as well as by insects. Knowledge of plant diseases is restricted to tobacco mosaic virus as a viral disease, black spot as a fungal disease, and aphids as insects. Plants can be damaged by a range of ion deficiency conditions: • stunted growth caused by nitrate deficiency • chlorosis caused by magnesium deficiency. Knowledge of ions is limited to nitrate ions needed for protein synthesis and therefore growth and magnesium ions needed to make chlorophyll.

For ease of use i have uploaded AQA’s Required practical worksheets for all 10 biology practicals. Please note this included the practicals for separate science students.

Measure the population size of a common species in a habitat. Use sampling techniques to investigate the effect of a factor on the distribution of this species. This lesson was conducted outdoors hence why a powerpoint was not created. This investigation has two parts: Investigating the population size of a plant species using random sampling Investigating the effect of a factor on plant distribution using a transect line. AQA spec link: 4.7.2.1 Relevant chapter: B16 Adaptations, interdependence and competition. AQA Biology third edition textbook-Page 262-263 In doing this practical students should cover these parts of the apparatus and techniques requirements. AT 1 – use appropriate apparatus to record length and area. AT 3 – use transect lines and quadrats to measure distribution of a species. AT 4 – safe and ethical use of organisms and response to a factor in the environment. AT 6 – application of appropriate sampling techniques to investigate the distribution and abundance of organisms in an ecosystem via direct use in the field. AT 8 – use of appropriate techniques in more complex contexts including continuous sampling in an investigation.

Investigate the effect of a range of concentrations of salt or sugar solutions on the mass of plant tissue. NB: RP 2 for combined science AQA spec link: 4.1.3.2 Relevant chapter: B1 Cells and organisation. AQA Biology third edition textbook-Page 16-17 In doing this practical students should cover these parts of the apparatus and techniques requirements. Biology AT 1 - use appropriate apparatus to record mass and time. Biology AT 3 - use appropriate apparatus and techniques to observe and measure the process of osmosis. Biology AT 5 - measure the rate of osmosis by water uptake.

To use a light microscope to observe, draw and label a selection of plant and animal cells. AQA spec link: 4.1.1.5 Relevant chapter: B1 Cells and organisation. AQA Biology third edition textbook-Page 4-5 In doing this practical students should cover these parts of the apparatus and techniques requirements. Biology AT 1 – use appropriate apparatus to record length and area. Biology AT 7 – use a microscope to make observations of biological specimens and produce labelled scientific drawings

Investigate the effect of antiseptics or antibiotics on bacterial growth. (RP 2-separate science). This practical was completed in two lessons, students spent the second lesson measuring the zones of inhibition as well as calculating bacterial growth. Homework on bacterial divisions has also been included. NB: Please see B5.4 Preventing bacterial growth if you would like the lesson that follows after this practical. AQA spec link: 4.1.1.6 Relevant chapter: B5 Communicable diseases. AQA Biology third edition textbook-Page 80-81 In doing this practical students should cover these parts of the apparatus and techniques requirements. AT 1 – use appropriate apparatus to record length and area. AT 3 – use appropriate apparatus and techniques to observe and measure the process of bacterial growth. AT 4 – safe and ethical use of bacteria to measure physiological function and response to antibiotics and antiseptics in the environment. AT 8 – the use of appropriate techniques and qualitative reagents in problem-solving contexts to find the best antibiotic to use or the best concentration of antiseptic to use.

NB: This is a BIOLOGY (SEPARATES) ONLY lesson Preventing bacterial growth in the lab lesson created in accordance to the NEW AQA Specification (9-1). Includes: slide animations, embedded videos, differentiated questions, answers and homework have also been included within the slides. This resource is NOT suitable for combined science students. AQA spec link: 4.1.1.6 Relevant chapter: B5-Communicable diseases . AQA Biology third edition textbook-Page 80-81. 1.1.6 Bacteria multiply by simple cell division (binary fission) as often as once every 20 minutes if they have enough nutrients and a suitable temperature. Students should be able to calculate cross-sectional areas of colonies or clear areas around colonies using r². Students should be able to calculate the number of bacteria in a population after a certain time if given the mean division time. Students should be able to express the answer in standard form.

NB: This is a BIOLOGY (SEPARATES) ONLY lesson Growing bacteria in the lab lesson created in accordance to the NEW AQA Specification (9-1). Includes: slide animations, embedded videos, differentiated questions and answers have also been included within the slides. This resource is NOT suitable for combined science students. AQA spec link: 4.1.1.6 Relevant chapter: B5-Communicable diseases . AQA Biology third edition textbook-Page 78-79. Bacteria multiply by simple cell division (binary fission) as often as once every 20 minutes if they have enough nutrients and a suitable temperature. Bacteria can be grown in a nutrient broth solution or as colonies on an agar gel plate. Uncontaminated cultures of microorganisms are required for investigating the action of disinfectants and antibiotics. Students should be able to describe how to prepare an uncontaminated culture using aseptic technique. They should be able to explain why: • Petri dishes and culture media must be sterilised before use to kill unwanted microorganisms • inoculating loops used to transfer microorganisms to the media must be sterilised by passing them through a flame • the lid of the Petri dish should be secured with adhesive tape to prevent microorganisms from the air contaminating the culture, and stored upside down • in school and college laboratories, cultures should be incubated at a maximum temperature of 25 °C.

Adaptations in plants lesson created in accordance to the NEW AQA Specification (9-1). Designed for a higher ability class, although content can be adjusted to suit any ability. Includes powerpoint timers, slide animations, embedded video’s and mini review. NB: If you are unable to play embedded videos please view slide notes for link. AQA spec link: 4.7.1.4 Relevant chapter: B16 Adaptations, interdependence and competitions. AQA Biology third edition textbook-Page 272-273 Students should be able to explain how organisms are adapted to live in their natural environment,given appropriate information.

Adaptations in animals lesson created in accordance to the NEW AQA Specification (9-1). Designed for a higher ability class, although content can be adjusted to suit any ability. Includes powerpoint timers, slide animations, embedded video’s and mini review. NB: If you are unable to play embedded videos please view slide notes for link. AQA spec link: 4.7.1.4 Relevant chapter: B16 Adaptations, interdependence and competitions. AQA Biology third edition textbook-Page 270-271 Students are required to know the following; Students should be able to explain how organisms are adapted to live in their natural environment, given appropriate information. Organisms have features (adaptations) that enable them to survive in the conditions in which they normally live. These adaptations may be structural, behavioural, or functional.

Adapt and survive lesson created in accordance to the NEW AQA Specification (9-1). Designed for a higher ability class, although content can be adjusted to suit any ability. Includes powerpoint timers, slide animations, embedded video’s and mini review. NB: If you are unable to play embedded videos please view slide notes for link. AQA spec link: 4.7.1.4 Students should be able to explain how organisms are adapted to live in their natural environment, given appropriate information. Organisms have features (adaptations) that enable them to survive in the conditions in which they normally live. These adaptations may be structural, behavioural, or functional. Some organisms live in environments that are very extreme, such as at high temperature, pressure, or salt concentration. These organisms are called extremophiles. Bacteria living in deep sea vents are extremophiles.

Competition in plants lesson created in accordance to the NEW AQA Specification (9-1). Designed for a higher ability class, although content can be adjusted to suit any ability. Includes powerpoint timers, slide animations, embedded video’s and mini review. NB: If you are unable to play embedded videos please view slide notes for link. AQA spec link: 4.7.1.1 Relevant chapter: B16 Adaptations, interdependence and competitions. AQA Biology third edition textbook-Page 266-267 Students are required to know the following; Plants in a community or habitat often compete with each other for light and space, and for water and mineral ions from the soil. Animals often compete with each other for food, mates and territory. Within a community each species depends on other species for food, shelter, pollination, seed dispersal etc. If one species is removed it can affect the whole community. This is called interdependence. A stable community is one where all the species and environmental factors are in balance so that population sizes remain fairly constant. Students should be able to extract and interpret information from charts, graphs, and tables relating to the interaction of organisms within a community.

Competition in animals lesson created in accordance to the NEW AQA Specification (9-1). Designed for a higher ability class, although content can be adjusted to suit any ability. Includes powerpoint timers, slide animations, embedded video’s and mini review. NB: If you are unable to play embedded videos please view slide notes for link. AQA spec link: 4.7.1.1 Relevant chapter: B16 Adaptations, interdependence and competitions. AQA Biology third edition textbook-Page 264-265 Students are required to know the following; Students should be able to describe: • different levels of organisation in an ecosystem from individual organisms to the whole ecosystem • the importance of interdependence and competition in a community. Students should be able to, when provided with appropriate information: • suggest the factors for which organisms are competing in a given habitat • suggest how organisms are adapted to the conditions in which they live. An ecosystem is the interaction of a community of living organisms (biotic) with the non-living (abiotic) parts of their environment. To survive and reproduce, organisms require a supply of materials from their surroundings and from the other living organisms there.

Distribution and abundance lesson created in accordance to the NEW AQA Specification (9-1). Designed for a higher ability class, although content can be adjusted to suit any ability. Includes powerpoint timers, slide animations, embedded video’s and mini review. NB: If you are unable to play embedded videos please view slide notes for link. AQA spec link: 4.7.2.1 Relevant chapter: B16 Adaptations, interdependence and competitions. AQA Biology third edition textbook-Page 262-263 Students are required to know the following; A range of experimental methods using transects and quadrats are used by ecologists to determine the distribution and abundance of species in an ecosystem. In relation to abundance of organisms students should be able to: • understand the terms mean, mode and median •calculate arithmetic means

Organisms in their environment lesson created in accordance to the NEW AQA Specification (9-1). Designed for a higher ability class, although content can be adjusted to suit any ability. Includes powerpoint timers, slide animations, embedded video’s and mini review. NB: If you are unable to play embedded videos please view slide notes for link. AQA spec link: 4.7.1.2 + 4.7.1.3 Relevant chapter: B16 Adaptations, interdependence and competitions. AQA Biology combined edition textbook-Page 260-261 Students are required to know the following; Students should be able to explain how a change in an abiotic factor would affect a given community given appropriate data or context. Abiotic (non-living) factors which can affect a community are: •• light intensity •• temperature •• moisture levels •• soil pH and mineral content •• wind intensity and direction •• carbon dioxide levels for plants •• oxygen levels for aquatic animals. Students should be able to explain how a change in a biotic factor might affect a given community given appropriate data or context. Biotic (living) factors which can affect a community are: •• availability of food •• new predators arriving •• new pathogens •• one species outcompeting another so the numbers are no longer sufficient to breed.

The importance of communities lesson created in accordance to the NEW AQA Specification (9-1). Designed for a higher ability class, although content can be adjusted to suit any ability. Includes powerpoint timers, slide animations, embedded video’s and mini review. NB: If you are unable to play embedded videos please view slide notes for link. AQA spec link: 4.7.1.1 Relevant chapter: B16 Adaptations, interdependence and competitions. AQA Biology third edition textbook-Page 258-259 Students are required to know the following; Students should be able to describe: •different levels of organisation in an ecosystem from individual organisms to the whole ecosystem • the importance of interdependence and competition in a community. An ecosystem is the interaction of a community of living organisms (biotic) with the non-living (abiotic) parts of their environment. To survive and reproduce, organisms require a supply of materials from their surroundings and from the other living organisms there. Plants in a community or habitat often compete with each other for light and space, and for water and mineral ions from the soil. Animals often compete with each other for food, mates and territory. Within a community each species depends on other species for food, shelter, pollination, seed dispersal etc. If one species is removed it can affect the whole community. This is called interdependence. A stable community is one where all the species and environmental factors are in balance so that population sizes remain fairly constant.