Everything Life Sciences Grade 10

Figure 6.20: Potometer measures the rate of transpiration. Investigation: Determining the effect of environmental conditions on ...

Cut the stem of the leafy shoot (at an angle to increase the surface area)under water . The reason we cut it under water is to ...

Why is it important to cut the stem at an angle under the water? Which part of the stem does the straw represent? Which three f ...

Observations: Write down anything you observed about the plants, the plastic bags and the rate of water loss from the plant. Con ...

more on the ventral (lower) surface of the leaf. This means that less water vapour is lost because the ventral side of the leaf ...

Figure 6.24: Spiny leaves have a small surface area to decrease transpiration. Leaf arrangement: vertical leaf arrangement (lik ...

Wilting refers to the loss of rigidity or structure of non-woody parts of plants (Figure 6.26). It occurs when turgidity of plan ...

Below is an explanation of how guttation occurs: At night, when it is dark, transpiration does not occur since the stomata are ...

must pass through the endodermis to enter the xylem. Once water is in the xylem of the root, it will pass up the xylem of the st ...

FACT Capillarity: refers to the ability of a liquid to flow through narrow spaces (capillary pressure). ruler Method: Remove ...

the internal structure of a dicotyledon leaf and stem, and the structure of the cells that make up the specialised tissues the ...

Write down your results Observations: Record your observations. Conclusions: What did you conclude from this experiment? Movemen ...

allow the companion cells to regulate the content and activity of the sieve tube cytoplasm. The companion cells also help load t ...

Transpiration: Transpiration is the loss of water from the stomata of plants. It creates a ’suction’ or transpirational pull th ...

Dicotyledon Transpiration Water potential gradient On a hot day in the middle of a drought, what can you expect the leaves of ...

d) all of the above Describe how light intensity is responsible for an increase or decrease in the transpira- tion rate. Study ...

CHAPTER^7 Support systems in animals 7.1 Overview 190 7.2 Skeletons 190 7.3 Human skeleton 195 7.4 Musculoskeletal tissues 207 7 ...

7 Support systems in animals 7.1 Overview Introduction DUMMY In this chapter we will be studying the different types of skeletal ...

FACT As you will learn in the chapterHistory of Life on Earth, many of these structural adaptations allowed animals to move from ...

when landing after a jump. Depending on their means of locomotion, terrestrial animals needed to adapt their shapes and skeleton ...