During cold days, there is contraction of erector pilli muscles, hair lies flat hence dog appears larger due to vasoconstriction while, during hot days, there relaxation of erector pilli muscles, hair lies flat hence the dog appears smaller due to vasodilation.
johnmulu answered the question on January 21, 2017 at 12:33
-
Explain why insects’ blood is said to lack a respiratory pigment
(Solved)
Insects’ blood is said to lack a respiratory pigment. Explain
Date posted:
January 21, 2017
.
Answers (1)
-
Give two roles of active transport in human beings
(Solved)
Give two roles of active transport in human beings.
Date posted:
January 21, 2017
.
Answers (1)
-
A rhinoceros in a national park was found to be infected with ticks. Name the trophic level occupied by the
(Solved)
A rhinoceros in a national park was found to be infected with ticks. Name the trophic level occupied by the
a) rhinoceros
b) ticks
Date posted:
January 18, 2017
.
Answers (1)
-
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
.
Answers (1)
-
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
.
Answers (1)
-
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
.
Answers (1)
-
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
.
Answers (1)
-
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)
-
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)
-
Distinguish between respiratory quotient and oxygen debt
(Solved)
What is the difference between respiratory quotient and oxygen debt?
Date posted:
January 14, 2017
.
Answers (1)