(a) Make a clearly labelled diagram of the inner ear of a human being.
(b) Describe how each of the following is achieved in us
(i) hearing
(ii) balance

Draw a labelled diagram of LS. of an embryo of grass (any six labels). (b) Give reason for each of the following: (i) Anthers of angiosperm flowers and described as dithecous. (ii) Hybrid seeds haveto be produced year after year.

(a) Draw a labelled diagram of excretory system in human beings and label the following: (i) left kidney, (ii) renal artery, (iii) urinary bladder, (iv) urethra (b) Name the functional unit of kidney. (c) Name two nitrogenous wastes released from kidney.

Describe the two uses of each of the following: (a) Copper sulphate (b) Silver nitrate

Draw a neat and labelled diagram of a fish and answer the following questions : Name the strutures that help in the following : (i)Swimming (ii ) Breathing (iii ) protection (iv ) Maintaining buoyancy

Based on the diagram drawn above in (i) give a suitable term for each of the following description: The sensory cells that help in hearing.

If a=2 and b=3, then find the values of each of the following: (i) a^a+b^b (ii) a^b+b^a

(a) Draw a diagram of the structure of a human ovum surrounded by corona radiata. Label the following parts : (i) Ovum, (ii) Plasma Membrane, (iii) Zona Pellucida (b) State the function of Zona Pellucida.

Based on the diagram drawn above in (i), give a suitable term for each of the following description. The nerve that carries impulse from ear to brain

Draw a labelled diagram of inner ear. Name the part of the inner ear that is responsible for static balance in human beings.

Briefly describe how the following actions take place : The oval window of the inner ear vibrates.