Inability of the pollen grains to fertilize the egg cell of the same plant
sharon kalunda answered the question on May 22, 2019 at 09:58
- Use the graph below to answer the following questions.
(a) Why does the activity of the enzyme become constant after a while?
(b) State how the activity...(Solved)
Use the graph below to answer the following questions.
(a) Why does the activity of the enzyme become constant after a while?
(b) State how the activity of the enzyme may be increased in (a) above.
Date posted: May 22, 2019. Answers (1)
- Why is the wall of the left ventricle thicker than that of the right ventricle.(Solved)
Why is the wall of the left ventricle thicker than that of the right ventricle.
Date posted: May 22, 2019. Answers (1)
- State three preventive measures of schistosomiasis in human beings(Solved)
State three preventive measures of schistosomiasis in human beings
Date posted: May 22, 2019. Answers (1)
- Below is a diagram of an organelle.
(a) State the function of the organelle drawn above.
(b) Name the parts of the organelle where :
(i) Oxygen...(Solved)
Below is a diagram of an organelle.
(a) State the function of the organelle drawn above.
(b) Name the parts of the organelle where :
(i) Oxygen gas is produced as a byproduct.
(ii) Carbon (IV) oxide is utilized.
Date posted: May 22, 2019. Answers (1)
- The diagram below represents a transverse section of a plant part. Study it and answer the questions that
follow.
a)Name the class in which the plant belongs.
b)...(Solved)
The diagram below represents a transverse section of a plant part. Study it and answer the questions that
follow.
a)Name the class in which the plant belongs.
b) Give a reason for answer (a) above.
c) State one adaptation for the structures labeled X to their functions.
Date posted: May 22, 2019. Answers (1)
- What is the role of roughage in a diet?(Solved)
What is the role of roughage in a diet?
Date posted: May 22, 2019. Answers (1)
- State the deficiency diseases of each of the following vitamins.
(i) B1
(ii) B2
(iii)B6(Solved)
State the deficiency diseases of each of the following vitamins.
(i) B1
(ii) B2
(iii)B6
Date posted: May 22, 2019. Answers (1)
- Study the flow diagram below.
Name the substance U, V and W.(Solved)
Study the flow diagram below.
Name the substance U, V and W.
Date posted: May 22, 2019. Answers (1)
- In a certain experiment, the following observation was made:
When red blood cell was placed in a certain solution, the solution exerted more osmotic pressure
leading to...(Solved)
In a certain experiment, the following observation was made:
When red blood cell was placed in a certain solution, the solution exerted more osmotic pressure
leading to the cell losing water molecules to become crenated/ shrunk.
(a) What type of solution was the cell placed in respect to the cell’s cytoplasm?
(b) By which physiological process did the cell lose water molecules?
Date posted: May 22, 2019. Answers (1)
- Under what condition is lactic acid formed in human muscles?(Solved)
Under what condition is lactic acid formed in human muscles?
Date posted: May 22, 2019. Answers (1)
- What are the names of modified leaves enclosing bougainvillea flowers whose function is to
attract insect pollinators?(Solved)
What are the names of modified leaves enclosing bougainvillea flowers whose function is to
attract insect pollinators?
Date posted: May 22, 2019. Answers (1)
- Equal amounts of crushed Irish potato were placed in equal volumes of hydrogen peroxide solution
at indicated pH. The volume of the gas produced was measured...(Solved)
Equal amounts of crushed Irish potato were placed in equal volumes of hydrogen peroxide solution
at indicated pH. The volume of the gas produced was measured and recorded as shown in the table
below.
(a) Name the gas that was produced.
(b)Account for the difference in the volume of the gas produced in pH 4.0 and pH 9.0
Date posted: May 22, 2019. Answers (1)
- The diagram below represents a plant
a) Name the division to which the plant belongs.
b) Give a reason for your answer in (a) above.(Solved)
The diagram below represents a plant
a) Name the division to which the plant belongs.
b) Give a reason for your answer in (a) above.
Date posted: May 22, 2019. Answers (1)
- Name the branch of Biology that involves the study of Organisms for the sake of classifying them.(Solved)
Name the branch of Biology that involves the study of Organisms for the sake of classifying them.
Date posted: May 22, 2019. Answers (1)
- Why is excretion important in living organisms?(Solved)
Why is excretion important in living organisms?
Date posted: May 21, 2019. Answers (1)
- Explain the reason why growing grass dries when salt is sprinkled on it?(Solved)
Explain the reason why growing grass dries when salt is sprinkled on it?
Date posted: May 4, 2019. Answers (1)
- What is the role of pepsin?(Solved)
What is the role of pepsin?
Date posted: April 28, 2019. Answers (1)
- Name two chemicals used to immobilize highly mobile animals during collection of small animals (Solved)
Name two chemicals used to immobilize highly mobile animals during collection of small animals
Date posted: April 28, 2019. Answers (1)
- Name three methods mammals use to lose heat from their bodies(Solved)
Name three methods mammals use to lose heat from their bodies.
Date posted: April 26, 2019. Answers (1)
- List down the three theories that explain the opening and closing of stomata(Solved)
List down the three theories that explain the opening and closing of stomata.
Date posted: April 26, 2019. Answers (1)