Question

SECTION A
Which one of these has a higher concentration of H+ ions ?
M HCI or I M CH3.COOH
What effect does an increase in concentration of H* (aq.) in a solution have on the pH of the
solution?
answer question numbers 3.1-3.4 on the basis of your understanding of the following
paragraph and the related studied concepts.
The leaf is the main photosynthetic organ in a plant. It controls gas exchange in plants, controls
The amount of water loss in plants. Upper epidermis cells contain no chloroplasts - which is not
true for the guard cells They form layers on the upper and lower surface of the leaf. Their function
is to prevent water from getting out and stopping unwanted substances/organisms getting in. The
palisade mesophyll layer is where most of the photosynthesis occurs in the leaf. The palisade
cells contain a lot of chloroplasts to help them perform this photosynthesis. Lower epidermis is
the bottom layer of the leaf, and is one cell thick. They may not contain a cuticle within the lower
epidermis, there are some holes found in leaves called stoma. These holes allow gases to diffuse in
and out of the leaves. The stoma are formed by two highly specialized epidermis cells, called guard
cells Guard cells are the only epidermis cells that contain chloroplasts.
3.1 Mention two function of lower epidermis
Where are chloroplasts present in the leaf?
What are the functions of xylem and phloem in leaf?
List one structural and one functional difference between upper and lower epidermis.
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Answer 1

Answer:

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Explanation:

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