Biology

• name 6 parts of the plant cell

  Mitochondria, vacuole , nucleus , cell wall , chloroplast , cell membrane
• What is the function of chloroplast

  helps absorb sunlight
• name 6 parts of the leaf

  Apex or tip, mid rib vein, margin, leaf blade, leaf stalk, vein
• Why do leaves tend to be a green in colour?

  Because leafs have lots of chloroplast and chloroplast have lot of chloropile which has a green pigment
• What is the word equation for photosynthesis?

  Carbon dioxide + water -> oxygen + glucose
• What is the main function of a leaf?

  to produce oxygen and glucose and take in carbon dioxide
• Why are leaves thin?

  Makes it easier for carbon dioxide and oxygen to get in and out
• Why are leaved broad?


  to get more chloroplast and sunlight
• what dose the wax cuticle do?

  Stops water from leaking
• what dose the stoma do?

  Lets gases enter
• How do you know gas has been produces in a chemical reaction?

  It bubbles or mist up
• the further you put away the bulb would you get more or less bubbles

  You would get less bubbles
• What would a plant need to increase the rate of photosynthesis further?

  More light
• name the hole on the underside of the leaf?

  The stoma
• Why dose the stoma open during the day?

  Because there is more sunlight so better photosynthesis and it opens by filling up with water
• What is a producer?


  Were the energy comes from
• what is a primary consumer?

  They eat the producers and they only eat plants (herbivore)
• what is a secondary consumer?

  eats the primary consumer and are met eaters (carnivores)
• Ina food chain what dose the arrow show?

  were the energy is being transferred
• what is a herbivore? 


  A animal which only eats plants
• What is a carnivore?

  A animal which only eat meat
• what is a omnivore? 


  A animal which eats meat and plants
• Give three reasons why not all energy is transferred from one organism to the next?

  1. They don't eat the bones 2. fiber get passed through 3. uses up the energy through resperation
• Were dose oxygen and water enter the the plant

  Oxygen enters form the stoma and water enters through the roots
• State two roles for plant roots

  1. to suck up the water
  2. keep the plant stable
• What is this

  e

  A) Root hair cell

  
• 2 adaptions that a root hair cell has to make it well suited for its role

  1. It anchors the plant

  2. They are thin to help water and nutrients get in
• for a low soil rocky and windy environment what would the roots be?

  Wide and long roots
• For a very dry and sandy environment what would the roots be ?


  deep and long roots
• for a low oxygen and underwater environment what would the roots be

  short and wide roots
• When a human consumes more energy than they expend, the excess glucose can be stored as fat?

  Yes it can be stored as fat
• What dose a plant do with the excess glucose it produces due to photosynthesis?

  It becomes starch
• how would you test starch?

  iodine test
• what colour will iodine turn in the presence of starch

  blue or black
• What things will cause all species population to decrease

  Having less of their prey to eat for example takeaway grass the whole system dies . Disease lack of water over hunting
• what dose the word diversity mean?

  Variety of things for example culture
• what dose bio mean

  life and organism
• Why would scientists be worried that the lion population had fallen so rapidly. 

  There would be more and more of the animals prey and the food chain would be messes up.
• what is the mean?

  All of them added up together them divided by how many numbers there are.
• what is the mode?

  Most common