Biology IGCSE year 9

• what are the rules for biological drawings

  Outline, seal, detail, label (NO SHADING)
• What is a food chain?

  diagram showing transfer of energy from one organism to the next, starting on th producer
• Food web

  More than one food chain going on
• The amount of energy trasfered to the next trophic level is 10%
• Heterotrophs are organisms that feed on others
• Population?

  A group of organisms of one species, living in the same area at the same time
• what is the neutral pH?

  7
• What are the factors affecting the rate of population growth?

  Food supply, Predation and disease
• what is the Lag phase?

  number of mature, reproducing individuals is low and may be widely dispersed.
• what are the phases?

  Lag phase, Log phase and stationary phase
• What does 'MRS. GREN' stand for?

  Movement, Respiration, Sensitivity, Growth, Reproduction, Excretion, Nutrition
• What does Prokaryote mean?

  Small/ simple (no nucleus)
• What does Eukaryote mean?

  Bigger/ complex
• What language in the binomial system is used?

  Latin
• How are organisms classified?

  DNA, Anatomy, Morphology (size, shape, structure), Cladistics (Reptiles, fish, birds)
• What are the 5 kingdoms?

  Monera, Protoctist, Fungi, Animalia, Plants
• Characteristics of Monera?

  Prokaryotes, Unicellular, autorophic + heterotrophic
• Characteristics of Protoctist?

  Eukaryotes, Unicellular, Autotrophic+Heterotrophic
• Characteristics of Fungi?

  Eukaryotes, Multicellular, Heterotrophic (external digestion)
• Characteristics of Animalia?

  Eukaryote, Multicellular, Heterotrophic (internal digestion)
• Characteristics of Plants?

  Eukaryotge, Multicellular, Autotrophs (photosynthesis)
• Insects characteristics?

  6 legs, 2 eyes, 2-4 wings, 2 Antennae, 3 part body organization (head, thorax, abdomen), Chitin exoskeleton
• arachnids characteristics?

  8 legs, several eyes, 0 wings, 0 Antennae, 2 part body organization (cephalo thorax, abdomen), Chitin exoskeleton
• Crustaceans characteristics?

  10-16 legs, 2 eyes, 0 wings, 4 Antennae, 2 part body organization (cephalo thorax, abdomen), sodium based shell
• Myriapods characteristics?

  20+ legs, 2 eyes, 0 wings, 2 Antennae, 2-ish part body organization (head,body sections), Chitin exoskeleton
• what is the birds mouth called?

  Beaq
• what is an Anneilid?

  Earth worm like
• What is the cephalothorax?

  Brain+ respiratory system