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1.   State three characteristics that ensure cross-pollination takes place in flowering plants. (Answered)
State three characteristics that ensure cross-pollination takes place in flowering plants. .
Posted On:Fri 11, March 2022 13:17:15 pm
2.   Describe how insect pollinated flowers are adapted to pollination. (Answered)
Describe how insect pollinated flowers are adapted to pollination. .
Posted On:Fri 11, March 2022 13:15:58 pm
3.   State two functions of the placenta in mammals. (Answered)
State two functions of the placenta in mammals. .
Posted On:Fri 11, March 2022 13:12:38 pm
4.   How is the human sperm cell structurally specialized? (Answered)
How is the human sperm cell structurally specialized? .
Posted On:Fri 11, March 2022 13:11:29 pm
5.   Name two substances that leave the foetal blood through the placenta. (Answered)
Name two substances that leave the foetal blood through the placenta. .
Posted On:Fri 11, March 2022 13:10:00 pm
6.   What name is given to a group of hormones that controls the development of secondary sexual characteristics in a human male? (Answered)
What name is given to a group of hormones that controls the development of secondary sexual characteristics in a human male? .
Posted On:Fri 11, March 2022 13:08:45 pm
7.   The diagram below represents a human reproductive organ. (i)Explain two adaptations of the structure labeled L to its functions. (ii)Explain the role of gland labeled K. (Answered)
The diagram below represents a human reproductive organ. (i)Explain two adaptations of the structure labeled L to its functions. (ii)Explain the role of gland labeled K. .
Posted On:Fri 11, March 2022 13:07:47 pm
8.   Name two reproductive hormones secreted by the pituitary gland in women. (Answered)
Name two reproductive hormones secreted by the pituitary gland in women. .
Posted On:Fri 11, March 2022 13:03:50 pm
9.   Name the gamete cells that are produced by the ovaries. (Answered)
Name the gamete cells that are produced by the ovaries. .
Posted On:Fri 11, March 2022 13:03:01 pm
10.   What is the function of the following structures in the human reproductive organs? (a) Fallopian tube. (b)Epididymis. (c) Scrotal sac. (Answered)
What is the function of the following structures in the human reproductive organs? (a) Fallopian tube. (b)Epididymis. (c) Scrotal sac. .
Posted On:Fri 11, March 2022 13:01:42 pm
11.   State two advantages of internal fertilization in humans. (Answered)
State two advantages of internal fertilization in humans. .
Posted On:Fri 11, March 2022 12:58:17 pm
12.   Explain why (a) Mammalian testes are located to hang outside the body. (b) Four months after fertilization, ovaries can be removed from a human female, without terminating pregnancy. (Answered)
Explain why (a) Mammalian testes are located to hang outside the body. (b) Four months after fertilization, ovaries can be removed from a human female, without terminating pregnancy. .
Posted On:Fri 11, March 2022 12:56:49 pm
13.   State the function of amniotic fluid. (Answered)
State the function of amniotic fluid. .
Posted On:Fri 11, March 2022 12:53:44 pm
14.   State the mode of asexual reproduction in yeast. (Answered)
State the mode of asexual reproduction in yeast. .
Posted On:Fri 11, March 2022 12:52:59 pm
15.   State two disadvantages of sexual reproduction in animals. (Answered)
State two disadvantages of sexual reproduction in animals. .
Posted On:Fri 11, March 2022 12:50:35 pm
16.   The diagram below represents a stage during cell division. (a) (i) Identify the stage of cell division. (ii)Give three reasons for your answer in (a) (i) above (b) Name the structures labeled M. (Answered)
The diagram below represents a stage during cell division. (a) (i) Identify the stage of cell division. (ii)Give three reasons for your answer in (a) (i) above (b) Name the structures labeled M. .
Posted On:Fri 11, March 2022 12:47:22 pm
17.   The diagram below represents human foetus in a uterus. (a) Name the part labeled S. (b)Name the types of blood vessels found in the structure labeled Q. (c)Name two features that enable the structure labeled P carry out its function. (d)State the role of the part labeled R. (Answered)
The diagram below represents human foetus in a uterus. (a) Name the part labeled S. (b)Name the types of blood vessels found in the structure labeled Q. (c)Name two features that enable the structure labeled P carry out its function. (d)State the role of the part labeled R. .
Posted On:Fri 11, March 2022 12:42:45 pm
18.   State two processes which occur during anaphase of mitosis. (Answered)
State two processes which occur during anaphase of mitosis. .
Posted On:Fri 11, March 2022 12:34:23 pm
19.   During which phase of meiosis does crossing over occur. (Answered)
During which phase of meiosis does crossing over occur. .
Posted On:Fri 11, March 2022 12:33:16 pm
20.   State three benefits of polyploidy in plants to a farmer. (Answered)
State three benefits of polyploidy in plants to a farmer. .
Posted On:Fri 11, March 2022 12:32:19 pm
21.   Name the process that leads to addition or loss of one or more chromosomes. (Answered)
Name the process that leads to addition or loss of one or more chromosomes. .
Posted On:Fri 11, March 2022 12:31:00 pm
22.   The chart below shows the number of chromosomes before and after cell division and fertilization in a mammal. a)What type of cell division takes place at Z. b)Where in the body of a female does process Z occur. c)On the chart, indicate the position of parents and gametes. (Answered)
The chart below shows the number of chromosomes before and after cell division and fertilization in a mammal. a)What type of cell division takes place at Z. b)Where in the body of a female does process Z occur. c)On the chart, indicate the position of parents and gametes. .
Posted On:Fri 11, March 2022 12:29:32 pm
23.   Describe the role of hormones in the human menstrual cycle. (Answered)
Describe the role of hormones in the human menstrual cycle. .
Posted On:Fri 11, March 2022 12:24:04 pm
24.   State three advantages of asexual reproduction. (Answered)
State three advantages of asexual reproduction. .
Posted On:Fri 11, March 2022 12:19:32 pm
25.   Explain why sexual reproduction is important in organisms. (Answered)
Explain why sexual reproduction is important in organisms. .
Posted On:Fri 11, March 2022 12:18:22 pm
26.   List four differences between meiosis and mitosis. (Answered)
List four differences between meiosis and mitosis. .
Posted On:Fri 11, March 2022 12:12:48 pm
27.   Which sex chromosomes are found in human? (Answered)
Which sex chromosomes are found in human? .
Posted On:Fri 11, March 2022 12:09:57 pm
28.   Figures 1 and 2 below represent reproductive organ of plants and an animal respectively. (a)Which letters in figures 1 and 2 represents the organs that produce female gametes? Figure 1 Figure 2 (b)What is the function of the structure labeled S? (c)Name the structure labeled W. (d)Which letters in figures 1 and 2 represents the structures where fertilization takes place. (e)Which letter in figure (Answered)
Figures 1 and 2 below represent reproductive organ of plants and an animal respectively. (a)Which letters in figures 1 and 2 represents the organs that produce female gametes? Figure 1 Figure 2 (b)What is the function of the structure labeled S? (c)Name the structure labeled W. (d)Which letters in figures 1 and 2 represents the structures where fertilization takes place. (e)Which letter in figure .
Posted On:Fri 11, March 2022 12:08:38 pm
29.   Give a reason why it is necessary for frogs to lay many eggs. (Answered)
Give a reason why it is necessary for frogs to lay many eggs. .
Posted On:Fri 11, March 2022 12:00:53 pm
30.   Describe the role or each of the following hormones in the human menstrual cycle (i) Oestrogen (ii) Progesterone (iii)Luteinising hormone (Answered)
Describe the role or each of the following hormones in the human menstrual cycle (i) Oestrogen (ii) Progesterone (iii)Luteinising hormone .
Posted On:Fri 11, March 2022 11:59:31 am
31.   The diagram below represents the pathways of water from the soil into the plant. Explain how water from the soil reaches the structure labeled L. (Answered)
The diagram below represents the pathways of water from the soil into the plant. Explain how water from the soil reaches the structure labeled L. .
Posted On:Wed 9, March 2022 21:20:04 pm
32.   State two ways in which plants with weak stems obtain mechanical support. (Answered)
State two ways in which plants with weak stems obtain mechanical support. .
Posted On:Wed 9, March 2022 10:13:09 am
33.   State three ways in which support is brought about in a leaf. (Answered)
State three ways in which support is brought about in a leaf. .
Posted On:Wed 9, March 2022 10:11:31 am
34.   State four characteristics of apical meristem cells. (Answered)
State four characteristics of apical meristem cells. .
Posted On:Wed 9, March 2022 10:10:37 am
35.   Name a support tissue in plants thickened with cellulose. (Answered)
Name a support tissue in plants thickened with cellulose. .
Posted On:Wed 9, March 2022 10:09:32 am
36.   What happens when a wilting young plants is well watered. (Answered)
What happens when a wilting young plants is well watered. .
Posted On:Wed 9, March 2022 10:08:33 am
37.   Name a support tissue in plants that is not thickened with lignin (Answered)
Name a support tissue in plants that is not thickened with lignin .
Posted On:Wed 9, March 2022 10:07:31 am
38.   Name two tissues in plants that provide mechanical support. (Answered)
Name two tissues in plants that provide mechanical support. .
Posted On:Wed 9, March 2022 10:06:41 am
39.   How is support attained herbaceous plants? (Answered)
How is support attained herbaceous plants? .
Posted On:Wed 9, March 2022 10:05:49 am
40.   Name two tissues in plants which are thickened with lignin (Answered)
Name two tissues in plants which are thickened with lignin .
Posted On:Wed 9, March 2022 10:05:01 am
41.   How are the xylem vessels adapted for support? (Answered)
How are the xylem vessels adapted for support? .
Posted On:Wed 9, March 2022 10:04:06 am
42.   State three ways by which plants compensate for lack of ability to move from one place to another. (Answered)
State three ways by which plants compensate for lack of ability to move from one place to another. .
Posted On:Wed 9, March 2022 10:03:18 am
43.   What makes young herbaceous plant remain upright? (Answered)
What makes young herbaceous plant remain upright? .
Posted On:Wed 9, March 2022 10:02:20 am
44.   State one characteristic of muscles responsible for each of the following (a) Peristaltic movement (b) Movement of limbs (Answered)
State one characteristic of muscles responsible for each of the following (a) Peristaltic movement (b) Movement of limbs .
Posted On:Wed 9, March 2022 10:00:37 am
45.   State how each of the following features enhance efficient movement of fish in water: (i) Scale (ii) Body shape (Answered)
State how each of the following features enhance efficient movement of fish in water: (i) Scale (ii) Body shape .
Posted On:Wed 9, March 2022 09:59:25 am
46.   Name the bones that articulate to form a ball and socket joint at hip. (Answered)
Name the bones that articulate to form a ball and socket joint at hip. .
Posted On:Wed 9, March 2022 09:57:54 am
47.   State a characteristic that is common to all cervical vertebrae (Answered)
State a characteristic that is common to all cervical vertebrae .
Posted On:Wed 9, March 2022 09:57:04 am
48.   (a) Name two types of involuntary muscles in mammals (b) State the location of each of the muscles named in (a) above. (Answered)
(a) Name two types of involuntary muscles in mammals (b) State the location of each of the muscles named in (a) above. .
Posted On:Wed 9, March 2022 09:56:08 am
49.   Name the type of skeleton that makes up each of the following animals (a) Locust (b) Bird (Answered)
Name the type of skeleton that makes up each of the following animals (a) Locust (b) Bird .
Posted On:Wed 9, March 2022 09:54:45 am
50.   Distinguish between a tendon and a ligament (Answered)
Distinguish between a tendon and a ligament .
Posted On:Wed 9, March 2022 09:53:14 am
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