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
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Give two destinations of food translocated from the leaves of plants
(Solved)
Give two destinations of food translocated from the leaves of plants.
Date posted:
January 21, 2017
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Answers (1)
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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
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Answers (1)
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What are the functions of exoskeleton in the phylum Arthropoda?
(Solved)
Write down two functions of exoskeleton in the phylum Arthropoda.
Date posted:
January 21, 2017
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Answers (1)
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What are the characteristics of meristematic cell?
(Solved)
State two characteristics of a meristematic cell.
Date posted:
January 21, 2017
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Answers (1)
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Name a growth hormone that has inhibitory effect in plants growth
(Solved)
Name a growth hormone that has inhibitory effect in plants growth.
Date posted:
January 21, 2017
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Answers (1)
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Why doesn't menstruation take place after fertilization in human beings
(Solved)
Explain why menstruation does not take place after fertilization in human beings.
Date posted:
January 21, 2017
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Answers (1)
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Name the hormone that stimulate the maturation of the graafian follicles to release a mature ovum
(Solved)
Name the hormone that stimulate the maturation of the graafian follicles to release a mature ovum in female reproductive cycle.
Date posted:
January 21, 2017
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Answers (1)
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State two distinguishing characteristics of the kingdom protoctista
(Solved)
State two distinguishing characteristics of the kingdom protoctista.
Date posted:
January 21, 2017
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Answers (1)
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Give two roles of active transport in human beings
(Solved)
Give two roles of active transport in human beings.
Date posted:
January 21, 2017
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Answers (1)
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What are the structural differences between skeletal and smooth muscles?
(Solved)
Give two structural differences between skeletal and smooth muscles.
Date posted:
January 21, 2017
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Answers (1)
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Give an example of the sex linked trait in humans on
(Solved)
Give an example of the sex linked trait in humans on
i) Y – Chromosomes
ii) X - Chromosomes
Date posted:
January 21, 2017
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Answers (1)
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What are the functions of the following structures in the human ear?
(Solved)
Give the function of the following structures in the human ear
(a) Semi-7 circular canals.
(b) Eustachian tube.
Date posted:
January 21, 2017
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Answers (1)
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Why do unicellular organisms such as paramecium lack complex organs for gaseous exchange?
(Solved)
Explain why unicellular organisms such as paramecium lack complex organs for gaseous exchange.
Date posted:
January 21, 2017
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Answers (1)
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Where are lysosomes synthesized?
(Solved)
Where are lysosomes synthesized?
Date posted:
January 21, 2017
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Answers (1)
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Name the organelle where Kreb’s/ citric cycle take place in a cell
(Solved)
Name the organelle where Kreb’s/Citric cycle take place in a cell.
Date posted:
January 21, 2017
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Answers (1)
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What are fossils?
(Solved)
What are fossils?
Date posted:
January 18, 2017
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Answers (1)
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What are the probable genotypes of (i) The woman (ii) Her father (iii) Her mother
(Solved)
A woman has a rare abnormality of the eyelids, called ptosis, which makes it impossible for her to open her eyes completely. The conditions has been found to be due to a single dominant gene (T). The woman's father had ptosis, but her mother had normal eyelids. Her father's mother had normal eyelids
a) What are the probable genotypes of
i) The woman
ii) Her father
iii) Her mother
Date posted:
January 18, 2017
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Answers (1)
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A person of blood group O requires blood transfusion. Name the blood group(s)
(Solved)
A person of blood group O requires blood transfusion. Name the blood group(s) that would - be donor(s)
Date posted:
January 18, 2017
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Answers (1)
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Name the process, in nature, which (a) Removes carbon (IV) oxide from the atmosphere
(Solved)
Name the process, in nature, which
a) Removes carbon (IV) oxide from the atmosphere
b) Releases carbon (IV) oxide into the atmosphere
Date posted:
January 18, 2017
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Answers (1)
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What is meant by sex-linked genes?
(Solved)
What is meant by sex-linked genes?
Date posted:
January 18, 2017
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Answers (1)