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Xylem vessels and tracheids have lignified walls; to provide support,one is damaged man is not blinded.
marto answered the question on October 8, 2019 at 05:28
- State the role of lignin in the wall of the xylem vessel.(Solved)
State the role of lignin in the wall of the xylem vessel.
Date posted: October 8, 2019. Answers (1)
- State three types of skeleton found in Kingdom animalia.(Solved)
State three types of skeleton found in Kingdom animalia.
Date posted: October 8, 2019. Answers (1)
- The diagram below represents a mammalian bone.(Solved)
The diagram below represents a mammalian bone.
(a) Identify the bone shown above.
(b) State the function of the parts labelled R and S.
(c) State the region of the body in which the bone is found.
Date posted: October 8, 2019. Answers (1)
- The diagram below represents a bone in the mammalian skeleton.(Solved)
The diagram below represents a bone in the mammalian skeleton.
a) Identify the bone with a reason.
b) State the function of the part labeled D.
Date posted: October 8, 2019. Answers (1)
- A person had an accident and had problems with his vision, hearing and memory.Identify the part of the brain that was affected(Solved)
A person had an accident and had problems with his vision, hearing and memory.
Identify the part of the brain that was affected
Date posted: October 7, 2019. Answers (1)
- State two functions of vitamin B5 (pantothenic acid).(Solved)
State two functions of vitamin B5 (pantothenic acid).
Date posted: October 7, 2019. Answers (1)
- a)State two functions of a mammalian ear.
(b) How is the cochlea suited to its function.(Solved)
a)State two functions of a mammalian ear.
(b) How is the cochlea suited to its function.
Date posted: October 7, 2019. Answers (1)
- The diagram below represents a simple reflex arc.(Solved)
The diagram below represents a simple reflex arc.
(a) Name the parts labeled A and B
(b) Explain how an impulse is transmitted across the gap labeled C
Date posted: October 7, 2019. Answers (1)
- An experiment was carried out to investigate a growth response in maize seedling as shown in the diagram below.(Solved)
An experiment was carried out to investigate a growth response in maize seedling as shown in the diagram below.
(a) State the type of response that is being investigated.
(b) Explain the response exhibited by the shoot.
Date posted: October 7, 2019. Answers (1)
- (a) State two differences between taxes and tropisms.
(b) Give two survival values of tactic movements to organisms.(Solved)
(a) State two differences between taxes and tropisms.
(b) Give two survival values of tactic movements to organisms.
Date posted: October 7, 2019. Answers (1)
- Study the drawing below and use it to answer the questions that follow.(Solved)
Study the drawing below and use it to answer the questions that follow.
a) Name the part labeled X.
b) Describe the changes that occur in the structure X in dim light.
c) What is meant by the term accommodation with reference to the eye?
Date posted: October 7, 2019. Answers (1)
- State three limitations of fossils records as an evidence of organic evolution.(Solved)
State three limitations of fossils records as an evidence of organic evolution.
Date posted: October 7, 2019. Answers (1)
- Name the region of the gut where digestion of cellulose takes place.(Solved)
Name the region of the gut where digestion of cellulose takes place.
Date posted: October 7, 2019. Answers (1)
- The table below is a representation of a chromatide with genes along its length. It undergoes mutation to appear as shown below.(Solved)
The table below is a representation of a chromatide with genes along its length. It undergoes mutation to appear as shown below.
a) Name the type of chromosomal mutation represented.
b) Name one mutagenic agent.
Date posted: October 7, 2019. Answers (1)
- Wekesa and Wanjiku who are siblings are both normal as their parents but have a hemophilic
brother. Give the Genotype of their parents.
i)What are linked...(Solved)
Wekesa and Wanjiku who are siblings are both normal as their parents but have a hemophilic
brother. Give the Genotype of their parents.
i)What are linked genes?
ii) What do you understand by the phase a test cross
Date posted: October 7, 2019. Answers (1)
- The figure below represents the distribution of height of pupils in a school.(Solved)
The figure below represents the distribution of height of pupils in a school.
(a) Name the type of variation represented by the curve
(b) Outline two possible causes of variation in height of individuals in man
Date posted: October 7, 2019. Answers (1)
- Distinguish between complete and incomplete dominance.(Solved)
Distinguish between complete and incomplete dominance.
Date posted: October 7, 2019. Answers (1)
- In an experiment the radicle of a seedling was marked equidistant using Indian ink as shown in the diagram below.(Solved)
In an experiment the radicle of a seedling was marked equidistant using Indian ink as shown in the diagram below.
(a) What was the aim of the experiment?
(b) On the diagram below mark on the radicle to show the appearance of the marks after 3days
(c ) State three characteristics of cells found just behind the root cap of a radicle
(d) Give two factors inside a seed that causes seed dormancy
Date posted: October 7, 2019. Answers (1)
- Give the form in which each of the following substances are transported in mammalian blood:(i) Carbon (IV) oxide(ii) Oxygen(Solved)
Give the form in which each of the following substances are transported in mammalian blood:(i) Carbon (IV) oxide(ii) Oxygen
Date posted: October 7, 2019. Answers (1)
- Carefully study the figure below and answer the questions that follow:-(Solved)
Carefully study the figure below and answer the questions that follow:-
The seedling with straight radicle and plumule was attached to a machine horizontally as shown above. The machine rotates making one revolution in 15 minutes.
(a) Draw how the seedling would look like after one week
(b) Explain your drawing in (a) above
(c) Name the machine used in the experiment above
(d) What would happen if the seedling was put horizontally outside the machine
(e) Name the stimuli investigated and type(s) of response expected in the experiment
Date posted: October 7, 2019. Answers (1)