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Air contains oxygen; which is required in respiratory to generate energy;
johnmulu answered the question on January 16, 2017 at 06:30
- 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. Answers (1)
- What is the difference between homologous and analogous structures?(Solved)
Give the difference between homologous and analogous structures.
Date posted: January 16, 2017. Answers (1)
- 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. Answers (1)
- 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. Answers (1)
- 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. Answers (1)
- 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. Answers (1)
- 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. Answers (1)
- 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. Answers (1)
- 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. Answers (1)
- Give one advantage of heterodonts over homodonts.(Solved)
State one advantage of heterodonts over homodonts.
Date posted: January 14, 2017. Answers (1)
- State the; a) Material that strengthens the xylem tissue.(Solved)
State the; a) Material that strengthens the xylem tissue.
b) Tissue that is removed when the bark of a dicotyledonous plant is ringed.
Date posted: January 14, 2017. Answers (1)
- State the following responses(Solved)
State the following responses;
i) Euglena migrates from a dark place towards light.
ii) Hairs and leaves of insectivorous plants close rapidly and trap insects when they land on the plants.
Date posted: January 14, 2017. Answers (1)
- State two theories advanced to support the origin of life(Solved)
State two theories advanced to support the origin of life
Date posted: January 14, 2017. Answers (1)
- What is the biological significance of dormancy in seeds?(Solved)
State two biological significance of dormancy in seeds.
Date posted: January 14, 2017. Answers (1)
- What type of variation is exhibited by the ability to roll the tongue in humans?(Solved)
What type of variation is exhibited by the ability to roll the tongue in humans?
Date posted: January 14, 2017. Answers (1)
- Explain how the following occur during chromosomal mutations(Solved)
Explain how the following occur during chromosomal mutations;
i) Non - disjunction
ii) Deletion
Date posted: January 14, 2017. Answers (1)
- Name the structure that encloses the heart(Solved)
Which structure encloses the heart?
Date posted: January 14, 2017. Answers (1)
- State one function for each of the following apparatus in the study of living organisms(Solved)
State one function for each of the following apparatus in the study of living organisms.
a) Sweet net
b) Pooter
c) Magnifying lens
Date posted: January 14, 2017. Answers (1)
- What is the meaning of the term visual acuity(Solved)
Define the term visual acuity.
Date posted: January 14, 2017. Answers (1)
- Where are the light sensitive cells located in the eye?(Solved)
Where are the light sensitive cells located in the eye?
Date posted: January 14, 2017. Answers (1)