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(a)A – stoma; rj. Stomata;
B – Epidermal cell;
X – Guard cell;
(b)- Thick, inelastic inner walls;
- Thin elastic outer walls;
- Has numerous chloroplast for photosynthesis;
Kavungya answered the question on October 3, 2019 at 07:41
- A 4 cm straight piece of stem from a herbaceous plant was split lengthwise into two similar pieces. The pieces were placed in sugar solutions...(Solved)
A 4 cm straight piece of stem from a herbaceous plant was split lengthwise into two similar pieces. The pieces were placed in sugar solutions of different concentrations for 30 minutes. Their appearance after 30 minutes is as shown below.
Account for appearance of the pieces in solution A and B.
Date posted: October 3, 2019. Answers (1)
- A cell magnified 800 times using a light microscope whose eye piece was x20. What was the magnification of the objective lens?(Solved)
A cell magnified 800 times using a light microscope whose eye piece was x20. What was the magnification of the objective lens?
Date posted: October 3, 2019. Answers (1)
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State two functions of a microscope.
Date posted: October 3, 2019. Answers (1)
- During a field trip, a student collected a specimen that had the following characteristics
- 2 body parts
- More than 4 pairs of limbs
-had a carapace
(a)...(Solved)
During a field trip, a student collected a specimen that had the following characteristics
- 2 body parts
- More than 4 pairs of limbs
-had a carapace
(a) Identify the class into which the organism belongs.
(b) Other than the head, name the other body part.
Date posted: October 3, 2019. Answers (1)
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Briefly explain the economic importance of the housefly and how it is controlled.
Date posted: October 1, 2019. Answers (1)
- Describe the life history of a housefly under the headings.
i)Eggs
ii)Maggots
iii)Pupa
iv)Imago(Solved)
Describe the life history of a housefly under the headings.
i)Eggs
ii)Maggots
iii)Pupa
iv)Imago
Date posted: October 1, 2019. Answers (1)
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List down at least five characteristics of the class insecta.
Date posted: October 1, 2019. Answers (1)
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Briefly explain how an aquatic green plant meets light intensity and carbon – dioxide requirements.
Date posted: October 1, 2019. Answers (1)
- The table shows some data about one human kidney.
FLUID Vol....(Solved)
The table shows some data about one human kidney.
FLUID Vol. (Cm3 PER MIN)
Blood of renal artery 600.00
Plasma in renal artery 350.00
Filtrate in Bowman’s capsule 64.00
Urine in water. 0.6.
a)Calculate:
i)The percentage of plasma in the blood
ii)The volume of plasma entering the kidney every hour.
iii)The volume of filtrate every hour.
iv)The percentage of the plasma entering the kidney that form the filtrate.
Date posted: October 1, 2019. Answers (1)
- A certain metabolic pathway takes the following sequence.
J ----- K ----- L ----- M ----- N
At the start of the experiment an inhibitor was added to the reactants....(Solved)
A certain metabolic pathway takes the following sequence.
J ----- K ----- L ----- M ----- N
At the start of the experiment an inhibitor was added to the reactants. After the experiment it was found that there was the same concentration of J more than normal concentration of K; near absence of L, M, and N.
When L was added to the inhibitor set M and N were detected.
a)At what stage of the reaction sequence did the inhibitor have its effects?
b)Explain how the inhibitor affected the reaction.
Date posted: October 1, 2019. Answers (1)
- Below is a list of some sources of energy:
Coal, Nuclear Energy, Petroleum, Hydroelectric Power, Solar Energy and Wind Energy. Classify them into:
a)Non – renewable
b)Renewable(Solved)
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Coal, Nuclear Energy, Petroleum, Hydroelectric Power, Solar Energy and Wind Energy. Classify them into:
a)Non – renewable
b)Renewable
Date posted: October 1, 2019. Answers (1)
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Name any three common bone disorders in man.
Date posted: October 1, 2019. Answers (1)
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Date posted: October 1, 2019. Answers (1)
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List three types of joints found in the skeleton and state the location of each.
Date posted: October 1, 2019. Answers (1)
- Explain how the structure of a synovial joint is related to its function of allowing movement to occur.
(Solved)
Explain how the structure of a synovial joint is related to its function of allowing movement to occur.
Date posted: October 1, 2019. Answers (1)
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Date posted: October 1, 2019. Answers (1)
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Name the main systems for coordination in animals
Date posted: October 1, 2019. Answers (1)
- It is estimated that the total length of the capillaries in man is 60km. They are much branched, thin walled and narrow. Explain...(Solved)
It is estimated that the total length of the capillaries in man is 60km. They are much branched, thin walled and narrow. Explain the significance of these features.
Date posted: October 1, 2019. Answers (1)
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Date posted: October 1, 2019. Answers (1)
- A person of blood group B marries a woman of blood group B. Work out the possible blood group of their children.(Solved)
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Date posted: October 1, 2019. Answers (1)