SMJK KWANG HUA, TAMAN ENG ANN, 41150 KLANGASSESSMENT 1, 2016

SCIENCE FORM 2

NAME: _________________________________________ FORM : 2 _____

Instruction: Answer all the questions.

1. (a) The schematic diagram below shows pathway from stimulus to response. Write E, F and G in the spaces provided below.

(i) (ii) (iii)

(3 marks)(b) Match the sensory organs with detected stimulus

Sensory organ Detected stimulus

NoseTouch, pressure, heat,

pain, cold

Skin Chemicals in food

Tongue Chemicals in air

(3 marks)

2. (a) The diagram below shows the human skin. Write touch receptor, pressure receptor or cold receptor to label each of the following skin part.

(3 marks)(b) Tick (√) on the situation that occurs when touch receptor is damaged.

Do not feel pain when fallsUnable to hold objectsUnable to feel the softness of silkCannot read Braille

(2 marks)

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FReceptorsE Brain

Response

Nerves

G

Nerves StimulusEffector

(i)

(ii)(iii)

(c) The doctor would normally give an injection at the forearm or hip. One of the reasons for this is to minimize the pain that you feel. What conclusion can you draw regarding the skin at the forearm or hip based on this situation?____________________________________________________________________________________________________________________________________________________________________________ (2 marks)

3. (a) Choose and tick (√) the correct statements.

Without the brain, we cannot smell.Smells can also warn us of dangers.Only food releases chemicals into the airHuman being smell with their nose

(3 marks)(b) Where are sensory cells found in the nose?______________________________________________________________________________________ (1 marks)(c) What is the importance of the mucous lining in the nasal cavity?____________________________________________________________________________________________________________________________________________________________________________ (2 marks)

4. (a) Figure below shows four areas of the human tongue. Identify the taste that each of the labelled areas is sensitive to.

(4 marks)(b) Based from the figure above, which area of the tongue will be stimulated by orange juice?______________________________________________________________________________________ (1 mark )(c) Swee Lian is having flu. She cannot smell her food well and finds the food tastes less tasty. Why?____________________________________________________________________________________________________________________________________________________________________________ (2 marks)

5. The diagram below shows some parts of the human ear.

(a) Use letter P to letter V from the diagram above to write the correct pathway of sound waves before they reach the brain.

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A.

B.

C.

D.

Q ST Brain

(2 marks) (b) The table below shows the function of three parts X, Y and Z in the human ear.

Part FunctionX Amplify sound vibrations.Y Converts sound vibrations into nerve impulses.Z Collect sound waves.

From the table above, identify parts X, Y and Z.

X : _______________________ Y : ________________________ Z: _________________________

(3 marks)(c) What is the importance of listening with both ears?______________________________________________________________________________________ (1 mark)

6. (a) Diagram below shows the structure of human eye. Label the structures. Choose the correct answer in the box provided.

(3 marks)(b) Fill in the blank.

The eye has layers – the sclera, choroid and retina. The is a white and

tough protective coat. The choroid is black in colour. It also has to supply nutrient and oxygen to the eye.

(3 marks)7. (a) State the property of light described below.

(i) The change in the direction of light when it passes from one medium to another.(ii) The bouncing off of the light when it hits a surface.

(2 marks)(b) There are two types of vision defect that often occur in humans. These vision defects are shown in the diagrams below.

(b) Identify the vision defects above.

P : ______________________________________ Q : ______________________________________

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(i)

(ii)

(iii)

Conjunctiva / Choroid / Retina / Ciliary body /

Vitreous humour / Pupil

(i) (ii)

(ii)

(2 marks)(c) Kamal has a vision defect type P and Salina has a vision defect type Q. What kind of lens they should be used to correct these defects (P and Q)?

P : ______________________________________ Q : ______________________________________

(2 marks)

8.

R S

(a) State the type of vision for the animals above.

R : ______________________________________________

S : ______________________________________________ (2 marks)(b)

(i) State the use of this device.______________________________________________________________________________________ (1 mark)(ii) Give one activity that requires the use of the device above.______________________________________________________________________________________ (1 mark)

(c) In animals, predators (tiger) usually have both eyes at front of their head, whereas preys (deer) usually have eyes at the side of their head. How does this help in their survival?______________________________________________________________________________________

______________________________________________________________________________________ (2 marks)

END OF QUESTIONS

Prepared by:

………………………………(Pn.Nik Nor Rozilawani bt Nik Ismail)

Checked by:

………………………………..(Pn. Ooi Siew Ling)

Verified by:

…………………………………(Pn.Pua Bee Yong)GKMP Sains & Matematik

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