Biology Revision test
Revision 1
1. Differentiate between Simple leaf and Compound leaf.
SIMPLE LEAF
There is one complete lamina or leaf
blade and it is not divided into smaller
parts.
COMPOUND LEAF
The lamina is divided into smaller parts
known as leaflets.
2. Write the equation for photosynthesis.
Carbon dioxide + Water → Glucose +Oxygen
3. Name the following:
a. Male part of the flower ------ (stamen/ androecium)
b. First whorl of the flower ------ (calyx/ sepals)
c. Ovary contain egg-like structures called ----- (ovules)
4. Write any three characteristics of Insect pollination.
* The flowers have attractive and brightly coloured petals.
* These flowers produce nectar which is the food for insects.
* Most flowers are sweet smelling.
Revision 2
1. Write the functions of the following:
a. Nucleus
b. Plastids
a. Nucleus controls all the activities performed by the cell.
b. They play a major role in photosynthesis and enable the light reaction to occur.
2. Draw a neat labelled diagram of a plant cell.
Refer page 35
3. What is Digestion?
Digestion is the process in which complex components of food are broken down into
simpler and soluble substances.
4. Starch → Sugar (Maltose)
5. Give reason: Food helps to keep us disease – free. How?
Foods are the source of various nutrients which keep us disease-free.
Revision 3
1. Differentiate between Cellular respiration and Breathing.
CELLULAR RESPIRATION
It is a chemical process
Energy is released
BREATHING
It is a physical process
No energy is released
2. Write the preventive measures of the following diseases.
a. Bronchitis
b. Pneumonia
a. Covering the nose when you are surrounded by dust or pollution.
b. Vaccination, washing hands especially after blowing the nose before and after
eating meals.
3. List out any two functions of Blood.
* It helps in carrying oxygen and carbon dioxide between the respiratory organs
and tissues.
* It contains antibodies to fight against the infections in the body.
4. What is Systole and Diastole?
Ventricles are under very high pressure
The heart muscles relax, while chambers are filled with blood.
5. Why is ‘O’ blood group called universal donor?
They can give blood to a person with any blood group.
Revision 4
1. Arrange in correct order:
Grass → Lion → Zebra →Sun
Sun → Grass → Zebra → Lion
2. Write the deficiency disease of the following:
a. Iron – Anaemia
b. Iodine – Goitre
c. Phosphorus – Rickets in children
3. Define Habitat.
The area where an organism lives naturally.
4. Write any two features of Mountain habitat.
* Mountain habitat has different climate in different regions.
* Mountain goat and yak, pine and fir trees are some commonly seen living
organisms in this habitat.
5. What are Xerocoles?
Animals living in desert.
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