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1. Onset of menstruation/ovulation;
2. Pubic hair develop;
3. Hips broaden/widen;
chrispohmomanyi answered the question on February 15, 2018 at 06:16
- A group of students selected two growing potted plants and treated them as follows
Plant A – leaves left intact
Plant B – all leaves...(Solved)
A group of students selected two growing potted plants and treated them as follows
Plant A – leaves left intact
Plant B – all leaves removed
The two plants were then enclosed with transparent polythene bags and left for two hours in the sun
(a) What was the aim of the experiment
(b) (i) State the results in the two set ups after two hours
(ii) Account for the results in plant A
Date posted: February 15, 2018. Answers (1)
- Energy flow in an ecosystem proceeds in a way that the amount of energy decreases in successive trophic levels. State why;
(a) It is more advisable...(Solved)
Energy flow in an ecosystem proceeds in a way that the amount of energy decreases in successive trophic levels. State why;
(a) It is more advisable for a person to feed on carbohydrates rather than on proteins
(b) Man does not feed on grass although it contains a lot of energy
Date posted: February 15, 2018. Answers (1)
- State two disadvantages of seed dormancy(Solved)
State two disadvantages of seed dormancy
Date posted: February 15, 2018. Answers (1)
- Name one factor in nature that increases the process of evolution(Solved)
Name one factor in nature that increases the process of evolution
Date posted: February 15, 2018. Answers (1)
- In view of modern genetics, explain why Lamarck’s theory is unacceptable(Solved)
In view of modern genetics, explain why Lamarck’s theory is unacceptable
Date posted: February 15, 2018. Answers (1)
- Outline the main features of Lamarckian theory of evolution.(Solved)
Outline the main features of Lamarckian theory of evolution.
Date posted: February 15, 2018. Answers (1)
- Explain what happens in humans when the concentration of glucose in the blood rises above the normal level.
(Solved)
Explain what happens in humans when the concentration of glucose in the blood rises above the normal level.
Date posted: February 15, 2018. Answers (1)
- Explain why a pregnant woman excretes less urea compared to a woman who is non- pregnant. (Solved)
Explain why a pregnant woman excretes less urea compared to a woman who is non- pregnant.
Date posted: February 15, 2018. Answers (1)
- Name two fins in a bony fish which perform the following functions:-
i) Changing direction. ...(Solved)
Name two fins in a bony fish which perform the following functions:-
i) Changing direction.
ii) Control pitching.
Date posted: February 15, 2018. Answers (1)
- Explain why blood is not normally used for transfusion after one month(Solved)
Explain why blood is not normally used for transfusion after one month
Date posted: February 15, 2018. Answers (1)
- Give factors that inhibit people living with HIV/Aids to disclose their status(Solved)
Give factors that inhibit people living with HIV/Aids to disclose their status.
Date posted: February 14, 2018. Answers (1)
- State the major factor in the ‘Global warming’ experienced in the world today(Solved)
State the major factor in the ‘Global warming’ experienced in the world today
Date posted: February 14, 2018. Answers (1)
- What is meant by the following biological terms? (i) Crenation (ii) Haemolysis (iii) Plasmolysis(Solved)
What is meant by the following biological terms?
i) Crenation
ii) Haemolysis
iii) Plasmolysis
Date posted: February 14, 2018. Answers (1)
- State three differences between osmosis and active transport(Solved)
State three differences between osmosis and active transport
Date posted: February 14, 2018. Answers (1)
- Identify three immunizable diseases in Kenya(Solved)
Identify three immunizable diseases in Kenya
Date posted: February 14, 2018. Answers (1)
- Define the term immunity(Solved)
Define the term immunity
Date posted: February 14, 2018. Answers (1)
- Name structures in herbaceous stems that enhance their support. (Solved)
Name structures in herbaceous stems that enhance their support.
Date posted: February 14, 2018. Answers (1)
- Explain the likely effect on humans and other organisms of untreated sewage discharged into water body that supplies water for domestic use.(Solved)
Explain the likely effect on humans and other organisms of untreated sewage discharged into water body that supplies water for domestic use.
Date posted: February 14, 2018. Answers (1)
- Explain how Protogyny hinder self pollination in plants:
(Solved)
Explain how Protogyny hinder self pollination in plants:
Date posted: February 14, 2018. Answers (1)
- Differentiate between continuous and discontinuous variation. (Solved)
Differentiate between continuous and discontinuous variation.
Date posted: February 12, 2018. Answers (1)