Biology Form 4 Chapter 2 Essay Questions

 

(ii)N [1m]  ________________________________________________________________________ e)Explain the role of L in maintaining cell turgidity [2m]  ________________________________________________________________________  ________________________________________________________________________ f)Name a cell which is rich in structure N and give your reason. [2m]  ________________________________________________________________________  ________________________________________________________________________ 2a)What are unicellular organisms and how do they differ from multicelluar organisms in terms of cell organisation? [2m]  b) Amoeba sp. is a unicelluar organism which can be found in freshwater ponds rich in decaying organic matter. Explain how freshwater Amoeba sp adapts to living freshwater environment. [4m] c)Explain how Amoeba sp. reproduces in response to different conditions in environment. [4m] d)

Unicellular organisms do not require a transport system.

Using Amoeba sp as example, give an evaluation of the above statement based on the  physical features of a unicellular organism with respect to the following processes: -Locomotion -Nutrition -Respiration [10m]

 

Form 4

Chapter 2 Cell Structure and Cell Organisation

Objective Questions1

Figure 1 shows the structure of a type of plant cell.

Figure 1

Which of the following accurately describes the cell and its location in the plant?

A

Cell that is dividing in the cell root meristem

B

Leaf epidermis cell

C

Root hair cell

D

Leaf mesophyll cell

2

Figure 2 shows the leaf cross-section of a green plant.

Figure 2

After exposure to a bright light, among parts

A

,

B

,

C

and

D

, which contains the moststarch?

3

The function of the plasma membrane in a cell is

A

to protect the cell nucleus

B

to control the in and out movement of solutes

C

to produce energy in the cell

D

to control cell activity

4

In a dicotyledonous leaf, photosynthesis does

not

occur in

A

the epidermis cells

B

the palisade mesophyll cells

C

the sponge mesophyll cells

D

the guard cells1

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