I. Glass tube – Wind pipe
II. Bell jar – Chest gravity
III. Y tube – Bronchi
IV. Balloons – Lungs
V. Rubber sheets Diaphpram
Inhalation is the process of breathing in of air(oxygen) into the respiratory organs such as lungs or gills
Exhalation is the flow of the breath out of an organism
The head region of fish show the gills.
I – Nostril
II – Eye
III – Gill
IV – Scale
V – Fin
For gaseous exchange
O – Grasshopper
P – Spider
O – insecta
P – arachnida
In a tabular form:
Differences between O and P:
1. Possession of compound eyes.
2. Possession of six legs
3. Possession of three body segments.
1. Possession of simple eye.
2. Possession of eight legs.
3. Possession of two body segments.
A–it is used to measure relative humidity.
B–it is used to measure the speed of wind.
C–it is used to measure light intensity on land
D–it is used to measure the amount of rainfall
E–it is used to measure the direction of of wind.
Example | Description | Use of beak
Eagle | the beak is short and cause to enable tear prey | it is used to hold prey firmly, it use to tag prey
Cock | it is short and little curve | it is used to peck the food
Duck | it is long and flat | it enable animal to sieve the food
(II) photosynthesis is defined as the process by which green plants manufactur their food making use of Co2 and water in the a presence of sunlight
It is a controlled experiment
An experiment to show that CO2 is absorbed while is giving out
(i) Avoidance of presence of sunlight
(ii) Avoidance of photosynthesis in terms of increment
From the green leaves
I => flagellum
II => Pyrenoid
III => Eyespot
IV => Chloroplasts
V = Nucleus
VI => Meganucleus
VII = Contractive Vacuole
Q = flagellum
I=> it use flagellum for movement
III=> it use flagellum for sighting
v=> it contains cellular activities in the cell
vI=> it is used removal of excess water
The three similries between Q and R are:-
– Possession of flagellum
– possession of eye spot
– possession of nucleus
The three difference between S and T are
– S is shapeless
– absence of cilia
– possession of pseudopodia
– T is slopper in shape
– possession of cilia
– Absence of pseudopodia