Get premium membership and access questions with answers, video lessons as well as revision papers.
i) Carrying capacity - Maximum / total number of organisms a given area can support sustainably without depleting resources ;
ii) Habitat - home or specific place where an organism lives ;
iii) Community - Different populations that interact in a given area;
sharon kalunda answered the question on May 23, 2019 at 12:48
- Give two adaptive features the make a predator efficient in capturing prey.(Solved)
Give two adaptive features the make a predator efficient in capturing prey.
Date posted: May 23, 2019. Answers (1)
- Give two reasons why potato tubers become sweeter after boiling.(Solved)
Give two reasons why potato tubers become sweeter after boiling.
Date posted: May 23, 2019. Answers (1)
- Explain what happens when diaphragm muscles contract during breathing in mammals.(Solved)
Explain what happens when diaphragm muscles contract during breathing in mammals.
Date posted: May 23, 2019. Answers (1)
- How does drug abuse expose one to the dangers of HIV/AIDS?.(Solved)
How does drug abuse expose one to the dangers of HIV/AIDS?.
Date posted: May 23, 2019. Answers (1)
- In an experiment to observe some variations in lengths of leaves of Jacaranda, the following curve was obtained.
i) Identify the type of variation illustrated by...(Solved)
In an experiment to observe some variations in lengths of leaves of Jacaranda, the following curve was obtained.
i) Identify the type of variation illustrated by the curve.
ii) Explain the cause of the variation you have named in (i) above.
Date posted: May 23, 2019. Answers (1)
- In an experiment, two equal volumes of solutions L and M were placed into visking tubings. The two viskig tubings were
suspended as shown below.(Solved)
In an experiment, two equal volumes of solutions L and M were placed into visking tubings. The two viskig tubings were
suspended as shown below.
Explain the results that were obtained in the visking tubings at the end of the experiment.
Date posted: May 23, 2019. Answers (1)
- Study the diagram below and answer the questions that follow.
a) Identify the diagram above.
b) State one reason for your answer in (a) above.
c)...(Solved)
Study the diagram below and answer the questions that follow.
a) Identify the diagram above.
b) State one reason for your answer in (a) above.
c) Name the parts labelled A and B.
Date posted: May 23, 2019. Answers (1)
- The set-up below shows an experiment to investigate photosynthesis.
a) What gas was collected in the test-tube.
b) What two environmental conditions are necessary for the...(Solved)
The set-up below shows an experiment to investigate photosynthesis.
a) What gas was collected in the test-tube.
b) What two environmental conditions are necessary for the experiment?
c) What was the role of sodium hydrogen carbonate in the experiment.
Date posted: May 23, 2019. Answers (1)
- Give a reason for each of the following:
a) Wind pollinated flowers produce large quantities of pollen grains.
b) Flowers of certain plants show heterostyly.(Solved)
Give a reason for each of the following:
a) Wind pollinated flowers produce large quantities of pollen grains.
b) Flowers of certain plants show heterostyly.
Date posted: May 23, 2019. Answers (1)
- Name the part of the brain responsible for:
a) Maintaining balance and posture of the body.
b) Controls heart, breathing and involuntary responses.(Solved)
Name the part of the brain responsible for:
a) Maintaining balance and posture of the body.
b) Controls heart, breathing and involuntary responses.
Date posted: May 23, 2019. Answers (1)
- Explain why protein is absent in urine of a normal person.(Solved)
Explain why protein is absent in urine of a normal person.
Date posted: May 23, 2019. Answers (1)
- Name the types of joints formed by each of the following pairs of bones.
i) Axis and Atlas.
ii) Humerus with clavicle and scapula.
iii) Tibia and...(Solved)
Name the types of joints formed by each of the following pairs of bones.
i) Axis and Atlas.
ii) Humerus with clavicle and scapula.
iii) Tibia and fibula with femur.
Date posted: May 23, 2019. Answers (1)
- Why is pyramid of biomass a better method of representing ecological relationships in habitats?(Solved)
Why is pyramid of biomass a better method of representing ecological relationships in habitats?
Date posted: May 23, 2019. Answers (1)
- Name a respiratory substrate usually available for energy release during starvation.(Solved)
Name a respiratory substrate usually available for energy release during starvation.
Date posted: May 23, 2019. Answers (1)
- Explain why a cross-circuit athlete pants heavily after sprint race.(Solved)
Explain why a cross-circuit athlete pants heavily after sprint race.
Date posted: May 23, 2019. Answers (1)
- In a family with four children, the father had blood group A while the mother had blood group B. One of the children had
blood group...(Solved)
In a family with four children, the father had blood group A while the mother had blood group B. One of the children had
blood group O.
a) What are the genotypes of the parents
b) What was the genotype of the child with blood group O?
Date posted: May 23, 2019. Answers (1)
- A potato cylinder measuring 100 mm was placed in a concentrated salt solution for 30 minutes. Describe its texture and
appearance after 30 minutes.(Solved)
A potato cylinder measuring 100 mm was placed in a concentrated salt solution for 30 minutes. Describe its texture and
appearance after 30 minutes.
Date posted: May 23, 2019. Answers (1)
- State two disadvantages of fossil records as an evidence of evolution.(Solved)
State two disadvantages of fossil records as an evidence of evolution.
Date posted: May 23, 2019. Answers (1)
- State the importance of the following processes to living organisms.
a) Locomotion.
b) Irritability(Solved)
State the importance of the following processes to living organisms.
a) Locomotion.
b) Irritability
Date posted: May 23, 2019. Answers (1)
- Explain why herbivores have large eyes on their sides?(Solved)
Explain why herbivores have large eyes on their sides?
Date posted: May 22, 2019. Answers (1)