Get premium membership and access questions with answers, video lessons as well as revision papers.
In a beaker, half fill it with water. Boil the water and keep it at boiling point
Put the selected leaf in the boiling water for two minutes
Remove the leaf from the water and keep it in a boiling tube containing ethanol
Place the boiling tube in hot water for ten minutes
Gently remove the leaf and wash with cold water
Spread it on a white tile
Add a few drops of iodine/potassium iodide solution to the leaf and note any observations
OBSERVATION/INTERPRETION
No colour change(iodine solution remains brown)-starch is not present
iodine /potassium iodide solution solution changed from brown to blue-black-starch is present
hydah kerubo answered the question on April 24, 2018 at 11:43
- Explain the biotic factors affecting distribution of organisms (Solved)
Explain the biotic factors affecting distribution of organisms
Date posted: April 22, 2018. Answers (1)
- Describe how semicircular canals perform their functions(Solved)
Describe how semicircular canals perform their functions
Date posted: April 21, 2018. Answers (1)
- Discuss the apparatus used in specimen (Solved)
Discuss the apparatus used in specimen
Date posted: April 21, 2018. Answers (1)
- What is the difference between growth and reproduction?(Solved)
What is the difference between growth and reproduction?
Date posted: April 21, 2018. Answers (1)
- Explain the term Gaseous exchange as used in biology (Solved)
Explain the term Gaseous exchange as used in biology
Date posted: April 21, 2018. Answers (1)
- Explain the role of the kidney in the purification of blood.(Solved)
Explain the role of the kidney in the purification of blood.
Date posted: April 20, 2018. Answers (1)
- Explain the role of the following in homeostasis; 1. Skin 2. Liver 3. Hypothalamus(Solved)
Explain the role of the following in homeostasis;
1. Skin
2. Liver
3. Hypothalamus
Date posted: April 20, 2018. Answers (1)
- Differentiate between: 1. Heterotrophic and autotrophic modes of nutrition. 2. Photosynthesis and chemosynthesis(Solved)
a) Differentiate between:
1. Heterotrophic and autotrophic modes of nutrition.
2. Photosynthesis and chemosynthesis
b) Explain the importance of the following in photosynthesis.
1. Guard cells
2. Xylem tissues
c) State any three adaptations of a leaf to photosynthesis.
Date posted: April 20, 2018. Answers (1)
- Briefly explain the following modes of nutrients; 1. Saprophytism 2. Mutualism 3. Holozoic(Solved)
Briefly explain the following modes of nutrients;
1. Saprophytism
2. Mutualism
3. Holozoic
Date posted: April 20, 2018. Answers (1)
- Explain the adaptations of respiratory surfaces in plants.
(Solved)
Explain the adaptations of respiratory surfaces in plants.
Date posted: April 19, 2018. Answers (1)
- Describe the digestion in the Ileum.(Solved)
Describe the digestion in the Ileum.
Date posted: April 19, 2018. Answers (1)
- State the characteristics of movable joints (Solved)
State the characteristics of movable joints
Date posted: April 19, 2018. Answers (1)
- (i) what is a joint? (ii) State the functions of joints (iii) Name the main types of joints (Solved)
i) What is a joint?
ii) State the functions of joints
iii) Name the main types of joints
Date posted: April 19, 2018. Answers (1)
- Describe the bones that form the appendicular skeleton (Solved)
Describe the bones that form the appendicular skeleton
Date posted: April 19, 2018. Answers (1)
- Describe how the various vertebrae are adapted to their functions (Solved)
Describe how the various vertebrae are adapted to their functions
Date posted: April 19, 2018. Answers (1)
- Describe the formation of urine until it is eventually removed from human body(Solved)
Describe the formation of urine until it is eventually removed from human body.
Date posted: April 19, 2018. Answers (1)
- Name the bones of the vertebral column (Solved)
Name the bones of the vertebral column
Date posted: April 19, 2018. Answers (1)
- (i) State the functions of the vertebral column (ii) State the general characteristics of vertebrae (Solved)
i) State the functions of the vertebral column
ii) State the general characteristics of vertebrae
Date posted: April 19, 2018. Answers (1)
- Describe how carbon dioxide produced by respiring muscle cells reaches the alveolar cavities in mammalian lungs(Solved)
Describe how carbon dioxide produced by respiring muscle cells reaches the alveolar cavities in mammalian lungs.
Date posted: April 19, 2018. Answers (1)
- Name three stains used in microscopy(Solved)
Name three stains used in microscopy.
Date posted: April 18, 2018. Answers (1)