Exam revision Flashcards
(75 cards)
State two functions of the swim bladder of a fish. (2 Mark)
Buoyancy, respiration
Give three advantages of flaked fish food. (3 Marks)
Suitable food most fish, widely available, often cheaper than other food types.
Explain why egg depositors often have a high breeding success rate. (6 Marks)
Egg depositors clean their eggs, to prevent parasites. Egg depositors produce fewer eggs, to allow the fish to provide parental care. Both parents are involved in the care of the eggs, for increased protection.
Explain three ethical considerations when importing wild caught fish for a pet shop. (3 Marks)
Depletes wild population, may not be substainably sourced, many may suffer/ die due to inappropriate transport.
State three possible cause of feather plucking in birds. (3 Marks)
Stress, disease/ parasites, incorrect diet
Describe how a birds skeletal system is adapted to filght. (5 Marks)
Less bones than mammals to be lightweight. hollow bones are lightweight. Hollow boines allow more oxygen to be absorbed into blood for flight. keeled breastbone to anchor wing muscles. fusion of bones for strength.
Define the term soft bill. (1 Mark)
Birds whose beak is designed to eat soft foods.
Explain three ways that season can trigger breeding in birds. (6 Marks)
Birds will breed wher there is an increased availbility of food, for rearing of offspring. Increased availibility of nesting materials, to create a suitable nest. Increased day length, as light stimulates production of reproductive hormones.
Define the term ex situ conservation. (1 Mark)
The process of protecting a species outside its natural habitat. E.g. zoos.
State the main purpose of the zoo Licensing Act 1981. (1 Mark)
To ensure all zoos in the UK are licensed, regularly inspected and provided with an appropriate environment.
Explain four ways that mixed species exhibits in zoos can influence animal welfare. (8 Marks)
Representative of natural habitat, to allow animals to exhibit natural behaviours. Positive interaction between species, is a form of enrichment. competition for food, causing increased aggression. Increased risk of disease, spread between closely related species.
Describe the risks involved with the chemcial sedation and immobilisation of zoo animals. (3 Marks)
Physical injury to the animal during immobilisation/ recovery. Overdose of anaesthetic leading too complications/ death. Hyperthermia/ hypothermia related to decreased thermoregulatory ability.
Explain possible ways that suppliers can impact on a land- based business. (3 Marks)
If suppliers increases prices then business will need to increase proces, or make less profit. If suppliers cannot provide goods, business may have to source from alternative suppliers, may let customers down therfore losing sales.
State three aims of the Working Time Regulations 1998. (3 Marks)
Imposes limits on employees hours of work. employees have the right to a minimum weekly rest period. Employees have the right to annual leave.
For a small zoo, discuss the records kept and explain their importance in relation to both keeping animals and running a zoo business.
Number of animals/ species. Birds/ deaths. disease monitoring and treatments. water test readings. Identification of individual animals. Biological data, e.g. age, weight, sex. ZIMS.
Financial records, physical records, legal requirements, monitoring business performance and progress.
State three considerations that should be made when choosing the location of an aquarium. (3 Marks)
Proximity( away from) windows. Environmental temperature. Vibrations.
State two sources of aquatic livestock. ( 2 Marks)
Wild caught, specialist breeders.
Explain two adaptations of lungfish to their environment. (4 Marks)
Uses lungs to get oxygen, enabling it to survive in poorly oxygenated water. Burrows, enabling it to survive droughts.
Explain why algae wafers should be used as part of a feeding strategy in a mixed species aquarium.(3 Marks)
They will sink to the bottom easily, as bottom feeders can only access food on the substrate, due to an inferior mouth position.
Explain one function of the lateral line in fish.(2 Marks)
Detects movement, which allows them to navigate.
State four breeding triggers in birds. (4 Marks)
Light, temperature, season, food availibility.
Explain which vitamin and mineral should be added to the barn chickens diet to improve eggshell quality. (4 Marks)
Calcuim, to make eggshells stronger. Vitamin D, to enable calcuim to be absorbed into the body.
Give one reason why outdoor housing could cintribute to improving eggshell quality. (1 mark)
Exposure to sunlight
Explain three causes of feather plucking in birds.(6 Marks)
Stress, due to inappropriate housing. Poor nutrition, leads to poor feather condition. Disease cause itching leading to overgrooming.