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- Population growth - Increase/ decrease in numbers/ change in numbers of individuals of a species
- Population dispersion - spread/ distribution of organisms in a habitat
- Population density - Number of individual per unit area
- Sex ratio - number of individuals in the reproductive age
-Age structure - number of individuals in the reproductive age
johnmulu answered the question on May 8, 2017 at 11:18
- State one way by which HIV/ AIDS is transmitted from mother to child. (Solved)
State one way by which HIV/ AIDS is transmitted from mother to child.
Date posted: May 8, 2017. Answers (1)
- State two ways in which schistosoma species is adapted to parasitic mode of life. (Solved)
State two ways in which schistosoma species is adapted to parasitic mode of life.
Date posted: May 8, 2017. Answers (1)
- (a) Distinguish between population and community.
(b) Name a method that could be used to estimate the population size of the following organisms (i) Fish in a pond
(ii) Black jack in a garden(Solved)
(a) Distinguish between population and community.
(b) Name a method that could be used to estimate the population size of the following organisms (i) Fish in a pond
(ii) Black jack in a garden
Date posted: May 8, 2017. Answers (1)
- (a) Distinguish between pyramid of numbers and pyramid of biomass.
(b) Give three reasons for loss of energy from one trophic level to another in the food chain.(Solved)
(a) Distinguish between pyramid of numbers and pyramid of biomass.
(b) Give three reasons for loss of energy from one trophic level to another in the food chain.
Date posted: May 8, 2017. Answers (1)
- The chart below represents a simplified nitrogen cycle. (Solved)
The chart below represents a simplified nitrogen cycle.
What is represented by X, Y and Z?
Date posted: May 8, 2017. Answers (1)
- What is the importance of the following in an ecosystem? (a) Decomposers (b) Predation(Solved)
What is the importance of the following in an ecosystem? (a) Decomposers (b) Predation
Date posted: May 8, 2017. Answers (1)
- Name the organism that causes amoebic dysentery.(Solved)
Name the organism that causes amoebic dysentery.
Date posted: May 8, 2017. Answers (1)
- How is aerenchyma tissue adapted to its function(Solved)
How is aerenchyma tissue adapted to its function
Date posted: May 8, 2017. Answers (1)
- What is meant by: (i) Autecology (ii) Synecology (Solved)
What is meant by: (i) Autecology (ii) Synecology
Date posted: May 8, 2017. Answers (1)
- Name the causative agent of typhoid. (Solved)
Name the causative agent of typhoid.
Date posted: May 8, 2017. Answers (1)
- How are leaves of submerged plants adapted for photosynthesis? (Solved)
How are leaves of submerged plants adapted for photosynthesis?
Date posted: May 8, 2017. Answers (1)
- (a) Name the bacteria found in root nodules of leguminous plants.
(b) What is the role of the bacteria named in (a) above? (Solved)
(a) Name the bacteria found in root nodules of leguminous plants.
(b) What is the role of the bacteria named in (a) above?
Date posted: May 8, 2017. Answers (1)
- Ascaris lumbricoides in an example for an endo - parasite(Solved)
Ascaris lumbricoides in an example for an endo - parasite
(a) The name Ascaris refers to
(b) State the habitat of the organism.
(c) State three ways in which the organism is adapted to living in its habitat.
Date posted: May 8, 2017. Answers (1)
- Explain why the carrying of wild beasts is higher than that for cattle in a given piece of land. (Solved)
Explain why the carrying of wild beasts is higher than that for cattle in a given piece of land.
Date posted: May 8, 2017. Answers (1)
- (a) Name the bacteria found in the root nodules of leguminous plant.
(b) State the association of the bacteria named in (a) above with the leguminous plants. (Solved)
(a) Name the bacteria found in the root nodules of leguminous plant.
(b) State the association of the bacteria named in (a) above with the leguminous plants.
Date posted: May 8, 2017. Answers (1)
- The diagram below represents the nitrogen cycle(Solved)
The diagram below represents the nitrogen cycle
(a) State the process labeled
A..
D..
(b) Name the compound represented by B
(c) Name the group of organisms labeled C
(d) How would excess pesticides in the soil interfere with process A.
Date posted: May 8, 2017. Answers (1)
- Why are green plants referred to as primary producers in an ecosystem? (Solved)
Why are green plants referred to as primary producers in an ecosystem?
Date posted: May 8, 2017. Answers (1)
- Explain how birds of prey are adapted to obtaining their food. (Solved)
Explain how birds of prey are adapted to obtaining their food.
Date posted: May 8, 2017. Answers (1)
- State two ways in which some fungi are beneficial to humans. (Solved)
State two ways in which some fungi are beneficial to humans.
Date posted: May 8, 2017. Answers (1)
- Give a reason why two species in ecosystems cannot occupy the same niche. (Solved)
Give a reason why two species in ecosystems cannot occupy the same niche.
Date posted: May 8, 2017. Answers (1)