Get premium membership and access questions with answers, video lessons as well as revision papers.
1)phototropism
This is the growth curvature in response to direction and intensity of light. Shoots are positively phototropic while roots are nrgatively phototropic
2)Geotrophism
This is growth curvature in response to gravity; shoots are negatively geotropism while roots are positively geotropic
3)Hydrotropic
This is growth curvature in response to water/moisture; Root are positively hdrotropic
3)Thigmotropism
This is growth curvature in response to contact with solid objects; shown by tendrils/climbing stems that intertwined around objects
Survival values
-phototropism exposes the leaves in position to maximum light absorption thereby enhancing photosynthesis
_Hytrotropism enables plant roots to seek water
_Chemotropism enables pollen tube to grow towards embryo sac thus enhancing fertilization to occur
_Thigmotropism enables the plants to obtain mechanical support
Kipssben answered the question on September 5, 2018 at 16:41
- Describe how a buffer solution is formed(Solved)
Describe how a buffer solution is formed.
Date posted: September 3, 2018. Answers (1)
- List any eight symptoms of fish bacterial disease attack
(Solved)
List any eight symptoms of fish bacterial disease attack
Date posted: August 27, 2018. Answers (1)
- State the difference between Lamarckian and Darwinian theories of evolution.(Solved)
State the difference between Lamarckian and Darwinian theories of evolution.
Date posted: August 27, 2018. Answers (1)
- Give a reason why new born babies have yellow colour(Solved)
Give a reason why new born babies have yellow colour.
Date posted: August 25, 2018. Answers (1)
- Describe a process that result in feces having brown colour(Solved)
Describe a process that result in feces having brown colour.
Date posted: August 25, 2018. Answers (1)
- (a) Name type of blood responsible for transport of carbon (iv) oxide (b)Name an enzyme in one of the blood above which control...(Solved)
(a) Name type of blood responsible for transport of carbon (iv) oxide
(b)Name an enzyme in one of the blood above which control reaction between water and carbon (iv) oxide
(c)Give components of weak carbonic acid after the breakdown (2mks)
Date posted: August 25, 2018. Answers (1)
- Excretion and homeostasis(Solved)
(a) Name the cycle under which ammonia undergo to form urea
(b)Name the enzyme that regulate the reaction
Date posted: August 25, 2018. Answers (1)
- Name the products of delamination of amino acids(Solved)
Name the products of deamination of amino acids
Date posted: August 25, 2018. Answers (1)
- What is the fate of excess products of photosynthesis?(Solved)
What is the fate of excess products of photosynthesis?
Date posted: August 25, 2018. Answers (1)
- Name disease of mammalian blood characterized by; (a) Crescent shape erythrocytes (b) Exceptionally large numbers of leukocytes(Solved)
Name disease of mammalian blood characterized by;
(a) Crescent shape erythrocytes
(b) Exceptionally large numbers of leukocytes
Date posted: August 25, 2018. Answers (1)
- What is meant by buffer solution(Solved)
What is meant by buffer solution
Date posted: August 25, 2018. Answers (1)
- Give a reason why sometimes one may discharge pale yellow urine(Solved)
Give a reason why sometimes one may discharge pale urine.
Date posted: August 25, 2018. Answers (1)
- Define the term diffusion pressure deficit(Solved)
Define the term diffusion pressure deficit.
Date posted: August 25, 2018. Answers (1)
- Some substance are absorbed into the blood capillaries in villi after digestion by process of active transport. Explain why(Solved)
Some substance are absorbed into the blood capillaries in villi after digestion by process of active transport. Explain why
Date posted: August 25, 2018. Answers (1)
- Identity the source of urea that is removed via kidney in a healthy person(Solved)
Identity the source of urea that is removed via kidney in a healthy person.
Date posted: August 25, 2018. Answers (1)
- Name three examples of petals(Solved)
Name three examples of petals
Date posted: August 25, 2018. Answers (1)
- Name sites of erythrocytes are produce in (a) Foetus (b) adults (Solved)
Name sites of erythrocytes are produce in
(a) Foetus
(b) adults
Date posted: August 22, 2018. Answers (1)
- (a) Define the term oxygen debt (b) Describe briefly how lactic acid is eliminated after vigorous exercise(Solved)
(a) Define the term oxygen debt
(b) Describe briefly how lactic acid is eliminated after vigorous exercise
Date posted: August 22, 2018. Answers (1)
- During a practical session of dissecting a rabbit in laboratory, student observed the following(Solved)
During a practical session of dissecting a rabbit in laboratory, student observed the following:
When cut, two blood vessels showed different shapes, one was stiff while another one collapsed immediately after blood oozed out. Explain the observation.
Date posted: August 22, 2018. Answers (1)
- State the role of sebaceous glands(Solved)
State the role of sebaceous glands.
Date posted: August 20, 2018. Answers (1)