- What is the difference between population and a community?(Solved)
Give the difference between population and a community.
Date posted: January 18, 2017.
- Why doesn't maize plant undergo secondary growth?(Solved)
Explain why a maize plant does not undergo secondary growth.
Date posted: January 18, 2017.
- What is the name of the compound which stores energy that is released during the oxidation of glucose?(Solved)
Name the compound that stores the energy that is released during the oxidation of glucose.
Date posted: January 18, 2017.
- Why is male is referred to as the heterogametic sex?(Solved)
In man, the male is referred to as the heterogametic sex. Explain
Date posted: January 18, 2017.
- Distinguish between transpiration and guttation(Solved)
What is the difference between transpiration and guttation?
Date posted: January 18, 2017.
- Which structural features increase the rate of impulse transmission through a neurone?(Solved)
State two structural features that increase the rate of impulse transmission through a neurone.
Date posted: January 17, 2017.
- A constant supply of oxygen is necessary for plants to efficiently absorb dissplved mineral salts from soil(Solved)
A constant supply of oxygen is necessary for plants to efficiently absorb dissplved mineral salts from soil. Explain
Date posted: January 17, 2017.
- Which feeding structure prevents oxygenated and deoxygenated blood from mixing inside the mamalian heart(Solved)
Name the structure which prevents oxygenated and deoxygenated blood from mixing inside the mammalian heart.
Date posted: January 17, 2017.
- Name one factor that is maintained at a relatively constant level in the body by the following organs(Solved)
Name one factor that is maintained at a relatively constant level in the body by the following organs
i) Liver
ii) Skin
iii) Kidneys
Date posted: January 17, 2017.
- Homeostasis is defined as "the maintenance of a stable internal environment" in the body.(Solved)
Homeostasis is defined as "the maintenance of a stable internal environment" in the body. What is meant by the expression "internal environment"?
Date posted: January 17, 2017.
- Explain why when using an electron microscope to study specimens(Solved)
Explain why when using an electron microscope to study specimens
(a) The images formed are viewed either on a fluorescent screen or photographic plates.
(b) It is not possible to observe living materials
Date posted: January 17, 2017.
- Name two strengthening tissues in plants other than xylem(Solved)
Other than xylem tissue, name two strengthening tissues in plants.
Date posted: January 17, 2017.
- Name the main mineral elements obtained from insects by insectivorous plants(Solved)
Name the main mineral elements obtained from insects by insectivoros plants
Date posted: January 16, 2017.
- State two factors within the seed that cause seed dormancy(Solved)
Which factors within the seed that cause seed dormancy?
Date posted: January 16, 2017.
- Name the ground material of each of the following organelles(Solved)
Name the ground material of each of the following organelles:
a) Chloroplast
b) Nucleus
c) Mitochondrion
d) Plant cell vacuole
Date posted: January 16, 2017.
- Explain why only mutations in the genes of gametes can influence evolution(Solved)
Explain why only mutations in the genes of gametes can influence evolution.
Date posted: January 16, 2017.
- What type of evolution produces analogous structures?(Solved)
Name the type of evolution that produces analogous structures
Date posted: January 16, 2017.
- Name two important functions of fruits to the life cycle of plant(Solved)
What are the important functions of fruits to the life cycle of plant?
Date posted: January 16, 2017.
- What is name given to addition of a dye to specimen during the preparation for viewing under the light microscope?(Solved)
Addition of a dye to specimen during the preparation for viewing under the light microscope is called
Date posted: January 16, 2017.
- Give one living cell in the plant and in the animal body that, when mature, lacks a nucleus (Solved)
Name one living cell in the plant and in the animal body that, when mature, lacks a nucleus.
Date posted: January 16, 2017.
- What is the role of air in a germinating seed?(Solved)
What is the role of air in a germinating seed?
Date posted: January 16, 2017.
- What are the advantages of metamorphosis to the life of insects?(Solved)
Give two advantages of metamorphosis to the life of insects.
Date posted: January 16, 2017.
- What is the difference between homologous and analogous structures?(Solved)
Give the difference between homologous and analogous structures.
Date posted: January 16, 2017.
- Name two respiratory surfaces in a mature frog apart from the lungs(Solved)
Name two respiratory surfaces in a mature frog apart from the lungs.
Date posted: January 16, 2017.
- What is the effect of denitrifying bacteria in the soil?(Solved)
Give the effect of denitrifying bacteria in the soil.
Date posted: January 16, 2017.
- Where does nitrogen fixation take place in a plant?(Solved)
Name the part of plant where nitrogen fixation takes place.
Date posted: January 16, 2017.
- State two water-borne human diseases that are characterized by severe diarrhea(Solved)
State two water-borne human diseases that are characterized by severe diarrhea.
Date posted: January 16, 2017.
- Name the habitat of a plant that has the following characteristics(Solved)
Name the habitat of a plant that:
i) Has stomata on the upper leaf surface only
ii) Has sunken stomatal pores
Date posted: January 16, 2017.
- Which factors which destroy the semi - permeability of the cell membrane?(Solved)
State two factors which destroy the semi-permeability of the cell membrane.
Date posted: January 16, 2017.
- Name the organelle that performs each of the following functions in a cell(Solved)
Name the organelle that performs each of the following functions in a cell
i) Controls movement of substance in and out of the cell
ii) Stores enzymes
Date posted: January 16, 2017.