Chapter 7 Practice Paper: Transport Systems — question paper

Section A: Multiple-choice questions[10 marks]

Answer all questions. For each question, write the letter (A, B, C or D) of the correct answer in the brackets provided.

1. 1

   The direction of blood in an artery is

   1. Aaway from the heart.
   2. Btowards the heart.
   3. Cas sugar in a plant.
   4. Donly inside xylem.
   ( )
2. 2

   The direction of blood in a vein is

   1. Aaway from the heart only.
   2. Bas phloem sap.
   3. Ctowards the heart.
   4. Dout of the leaf as oxygen gas.
   ( )
3. 3

   Substances are exchanged between the blood and body cells in

   1. Athe gullet.
   2. Bcapillaries.
   3. Cxylem.
   4. Dthe teeth.
   ( )
4. 4

   The plant tissue called xylem carries

   1. Asugars from the leaves.
   2. Bblood.
   3. Cundigested food.
   4. Dwater and mineral salts.
   ( )
5. 5

   The plant tissue called phloem carries

   1. Afood such as sugars.
   2. Bwater only, from the soil.
   3. Cblood away from the heart.
   4. Doxygen in red blood cells.
   ( )
6. 6

   Water molecules move from a more dilute soil solution into a root cell through a partially permeable membrane. This is

   1. Adigestion.
   2. Bcombustion.
   3. Cosmosis.
   4. Degestion.
   ( )
7. 7

   A climber at high altitude feels short of breath. The part of her blood that picks up oxygen in the lungs is

   1. Aplasma only.
   2. Bplatelets only.
   3. Cthe cell wall.
   4. Dred blood cells.
   ( )
8. 8

   Platelets help the body to

   1. Acarry water in xylem.
   2. Bclot blood at a cut.
   3. Cdigest starch.
   4. Dphotosynthesise.
   ( )
9. 9

   Dissolved food is carried mainly in

   1. Aplasma.
   2. Bthe cell wall of a root.
   3. Ca platelet only.
   4. Dthe gullet.
   ( )
10. 10

    Oxygen is more concentrated in the air sac of a lung than in the blood arriving there. The net movement of oxygen particles is from

    1. Aa lower concentration to a higher concentration.
    2. Ba root to a leaf only by phloem.
    3. Ca higher concentration to a lower concentration.
    4. Da dilute solution through a membrane only.
    ( )

Section B: Structured questions[20 marks]

Answer all questions in the spaces provided. Show your working for calculations.

1. 1

   Blood is the transport fluid in humans.

   1. (a)

      State the role of plasma, red blood cells and white blood cells.

      [3]
   2. (b)

      State the role of platelets.

      [1]
   3. (c)

      A muscle cell in an elephant’s leg is a long way from the lungs and the gut. State why diffusion alone cannot supply that cell.

      [1]
2. 2

   Blood vessels have different jobs.

   1. (a)

      State the job of an artery, a vein and a capillary.

      [3]
   2. (b)

      Explain how oxygen moves from the blood in a capillary into a respiring muscle cell.

      [2]
3. 3

   A plant root is in soil. The soil solution is more dilute than the solution inside the root cells.

   1. (a)

      Describe how water enters the root. Use the words water molecules, dilute and partially permeable membrane.

      [3]
   2. (b)

      Name the tissue that then carries the water to a leaf.

      [1]
   3. (c)

      Name the tissue that carries sugars from a leaf to a root.

      [1]
4. 4

   Transport is linked to size, medicines and decisions about surgery.

   1. (a)

      A flat, thin leaf has no blood. Explain how a cell inside that leaf can still receive carbon dioxide from the air.

      [2]
   2. (b)

      State how a medicine, once absorbed, is carried around the body.

      [1]
   3. (c)

      Before a hospital carries out a heart transplant, state two value questions the team should be able to answer. Do not describe the surgery.

      [2]