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(i) Translocation
(ii) Phloem tissue
(iii) Active transport/mass flow through diffusion.
(iv) - Have sieve plates that support the phloem tissue.
- Have sieve pores that acts as a pathway to allow movement of materials.
- Sieve tubes are cylindrical and joined end to end interconnected by cytoplasmic filaments.
- Sieve elements lack other cell components like nuclears.
- Has companion cells that have numerous mitochondria to supply energy needed for active transport.
- Presence of plasmodesmata between sieve elements and companion cells to facilitate movement of materials
between.
sharon kalunda answered the question on May 28, 2019 at 12:36
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counted 5 cells. Calculate the...(Solved)
a)A student from Kegonga used a microscope with X40 objective lens and X5 eye piece lens which had 2mm radius and
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Date posted: May 28, 2019. Answers (1)
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Date posted: May 28, 2019. Answers (1)
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Using the key provided identify the plants from which the leaves were obtained in each case...(Solved)
The diagrams below shows leaves obtained from five different plants.
Using the key provided identify the plants from which the leaves were obtained in each case give the sequence of steps in the key which you followed to arrive at the identify.
1 (a) Leaf simple -------------------------------------------------------------- go to 2
(b) Leaf compound ---------------------------------------------------------------- go to 4
2. (a) Leaf with parallel veins------------------------------------------------------- Maize
(b) Leaf with network vein ------------------------------------------------------- go to 3
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(b) Leaf margin serrated ---------------------------------------------------------- Hibiscus
4. (a) Leaflets emerging from one stalk like fingers ------------------------ Bombax
(b) Leaflets emerging from several stalk attached to main stalk-------- Acacia
(b) State three differences between the classes from which leaf A and leaf B were obtained from.
Date posted: May 28, 2019. Answers (1)
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In an ecological study a certain insect population and that of predators was estimated in a certain grassland over a period of 1 year (one year).
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(b) Suggest what happens to the insect’s population during dry months.
(c) Explain the relationship between the insect population and that of predators.
(d) Suggest what happens to the predator’s population during dry month.
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(i) Predator
(ii) Insects
(iii) Grass
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(i) Predator
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Date posted: May 28, 2019. Answers (1)
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Date posted: May 28, 2019. Answers (1)
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(b) Name the reaction represented by letter: X and Y(Solved)
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Date posted: May 28, 2019. Answers (1)
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Date posted: May 28, 2019. Answers (1)
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(a) What was the aim of the experiment?
(b) What...(Solved)
Students set up an experiment as shown below. Use it to answer the questions that follow.
(a) What was the aim of the experiment?
(b) What observation would be made in test tube B?
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Date posted: May 28, 2019. Answers (1)
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Across was made between homozygous red eyed...(Solved)
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Date posted: May 28, 2019. Answers (1)
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Date posted: May 28, 2019. Answers (1)
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Date posted: May 28, 2019. Answers (1)
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(b) How can one verify the identity...(Solved)
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(a) Name the aspect of photosynthesis being investigated.
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Date posted: May 28, 2019. Answers (1)
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Date posted: May 28, 2019. Answers (1)
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Date posted: May 28, 2019. Answers (1)
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Date posted: May 28, 2019. Answers (1)
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(a) Name enzyme X.
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Date posted: May 28, 2019. Answers (1)
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Date posted: May 28, 2019. Answers (1)
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Date posted: May 28, 2019. Answers (1)
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A certain plant had the following characteristics:
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- Found with sori on the under surface.
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- Sporophyte generation being dominant.
Name the division to which the plant belongs.
Date posted: May 28, 2019. Answers (1)