After the expiry of the third month of pregnancy, the placenta takes over the role of ovaries of secreting hormone progesterone, which maintains pregnancy.
marto answered the question on September 30, 2019 at 10:02
- State the adaptive structural differences between nephrons of desert and fresh water animals.(Solved)
State the adaptive structural differences between nephrons of desert and fresh water animals.
Date posted: September 30, 2019. Answers (1)
- During cold weather, very small mammals eat more than their own weight of food per day whereas large mammals eat food which is only a...(Solved)
During cold weather, very small mammals eat more than their own weight of food per day whereas large mammals eat food which is only a small fraction of their weight. Give an explanation for this.
Date posted: September 30, 2019. Answers (1)
- State the advantage of breeding seasons in Mammals other than Man?(Solved)
State the advantage of breeding seasons in Mammals other than Man?
Date posted: September 30, 2019. Answers (1)
- State the function of interstitial cells found in testis.(Solved)
State the function of interstitial cells found in testis.
Date posted: September 30, 2019. Answers (1)
- During a surgical operation, a doctor accidentally cut two blood vessels A and B. Out of blood vessel A, blood was spurting out while through...(Solved)
During a surgical operation, a doctor accidentally cut two blood vessels A and B. Out of blood vessel A, blood was spurting out while through blood vessel B, blood was flowing smoothly.
i) Identify blood vessels A and B.
Date posted: September 30, 2019. Answers (1)
- Name one hormone which promotes spermatogenesis in human males.(Solved)
Name one hormone which promotes spermatogenesis in human males.
Date posted: September 30, 2019. Answers (1)
- Give the role of the following hormones during menstrual cycle.
a) Follicle stimulating hormone.
b) Oestrogen.
c) Luteinizing hormone.(Solved)
Give the role of the following hormones during menstrual cycle.
a) Follicle stimulating hormone.
b) Oestrogen.
c) Luteinizing hormone.
Date posted: September 30, 2019. Answers (1)
- The table below shows the changes brought by hormones during reproduction in human females. Fill in the table.
(Solved)
The table below shows the changes brought by hormones during reproduction in human females. Fill in the table.
Date posted: September 30, 2019. Answers (1)
- A student examining pond water came across a certain living organisms which he drew as shown below.(Solved)
A student examining pond water came across a certain living organisms which he drew as shown below.
i) Identify the organism shown above.
ii) State the kingdom of the above organism.
iii) Name the structure labeled A.
iv) State the function of the part labeled B.
Date posted: September 30, 2019. Answers (1)
- State the circumstances in which more blood Sugar may be found in the hepatic portal vein than in any other blood vessels.(Solved)
State the circumstances in which more blood Sugar may be found in the hepatic portal vein than in any other blood vessels.
Date posted: September 30, 2019. Answers (1)
- 60 water beetles were caught and marked before being released to their pond. The next day,
another 60 water beetles were caught; 20 of which had...(Solved)
60 water beetles were caught and marked before being released to their pond. The next day,
another 60 water beetles were caught; 20 of which had been marked. About how many water
beetles were in the pond.
Date posted: September 30, 2019. Answers (1)
- A form three student came across two different types of fruits which are described as follows(Solved)
A form three student came across two different types of fruits which are described as follows:
Fruit A
Has free central placentation, hard epicarp and fibres air-filled mesocarp.
Fruit B
Hasaxile placentation, fleshy mesocarp and brightly colouredepicarp.
a) Suggest the possible agent of dispersal of each type of fruit
Date posted: September 30, 2019. Answers (1)
- State a way in which size is an important factor in temperature regulation in Mammals.(Solved)
State a way in which size is an important factor in temperature regulation in Mammals.
Date posted: September 30, 2019. Answers (1)
- Which part of the body produce Antidiuretic hormone.(Solved)
Which part of the body produce Antidiuretic hormone.
Date posted: September 30, 2019. Answers (1)
- From the functional point of view, state why the heart and capillaries are considered to
be the most important part of the circulatory system?(Solved)
From the functional point of view, state why the heart and capillaries are considered to
be the most important part of the circulatory system?
Date posted: September 30, 2019. Answers (1)
- a)Give the products of aerobic respiration in plants and animals.
(b) Name two factors that affect the rate of respiration.(Solved)
a)Give the products of aerobic respiration in plants and animals.
(b) Name two factors that affect the rate of respiration.
Date posted: September 30, 2019. Answers (1)
- Name and state the functions of four valves found in Mammalian heart.(Solved)
Name and state the functions of four valves found in Mammalian heart.
Date posted: September 30, 2019. Answers (1)
- The diagram below is that of a gill of a fish.(Solved)
The diagram below is that of a gill of a fish.
a) Name the parts labeled A and B.
b) State the function of part labeled C.
c) Explain how structure labeled A is adapted to its function.
Date posted: September 30, 2019. Answers (1)
- Classify the following organisms into Phylum and Class.(Solved)
Classify the following organisms into Phylum and Class.
Date posted: September 30, 2019. Answers (1)
- Describe experiments you would conduct to show that;
(a) Carbon (IV) oxide, (b) Chlorophyll (c) Sunlight are necessary for the process of photosynthesis(Solved)
Describe experiments you would conduct to show that;
(a) Carbon (IV) oxide, (b) Chlorophyll and (c) Sunlight are necessary for the process of photosynthesis under the following subheadings:-
(i) Aim
(ii) Materials and apparatus
(iii) Procedure
(iv) Expected observation
(v) Conclusion
Date posted: September 25, 2019. Answers (1)