UNIT 2. ACTIVITIES



ACTIVITIES
COMPREHENSION EXERCISES
ANSWER THE FOLLOWING QUESTIONS:
1.-What does a seed grow when it germinates?
2.-What does a seed need to germinate?
3.-Why is water important in germination?
4.-What do we call the process by which plants produce their own food?
5.-Where do plants store sugar?
6.-Why are sugar and starches important for the plant?
7.-In which part or the plant are flowers formed?
8.-How would you define the flower?
9.-Why are the petals of a flower brightly colored and scented?
10.-How many parts does the pistil have? Can you name them?
11.-In which part of the flower is pollen made?
12.-What is the stigma like in order to attract pollen?
13.-How would you define the fruit?
14.-Can you name some pollinators?
15.-How are flower adapted to attract pollinator?
16.-Why are insects so important in pollination?
17.-Can you name different agents that help spread seed?


COMPLETE THESE TEXTS WITH THE GIVEN WORDS
pushes        swells       down      splits

1.-When the seed absorbs water, it ……………………. and the seed coat …………………… When the seed germinates the stem ………………………through the soil to the open air. At the same time, the roots pushes ………………………. looking for water and nutrients.  

leaves        chloroplasts       sugars        photosynthesis      emerges 

2.-When a plant …………….. out of the soil, ……………… are developed in the stem and the process of ………………….. begins. The ……………….. found in the leaves convert energy, carbon dioxide and water into ……………..  

without        possible     pollinators    female       

3.-……………………… carry the pollen from male parts of the flower to …………. Parts. …………………………… pollinators, reproduction of the plant would not be …...………………….

REPHRASING

Replace the words printed in italics with the word or expression given:
Pollinators        pollination         moisture     self-pollinate    dormant       germinate

1.-The seeds start growing when there is enough air and water and the temperature is right.
2.-Agents who transport pollen can be the wind, water, insects, furry animals and human beings.
3.-The process of carrying the pollen to the stigma is brought about by the wind or insects.
4.-Seeds remain in a resting state before germinating.
5.- Some plants can pollinate to themselves. 


RELATIONSHIP BETWEEN STATEMENTS: CONTRAST

1.-Seeds remain dormant if they are kept cool and dry. When the amount of moisture and the temperature level are right, the seeds germinate and start growing. (However)
………………………………………………………………………………………………………………………………………………………………………………………………………….
2.-If dry seeds are planted in dry soil, they will not germinate. If there are too much water they will not germinate either. (On the other hand)
…………………………………………………………………………………………………………………………………………………………………………………………………………
3.-Dormant seeds require very little oxygen in order to stay alive. When they start to germinate they require more. (But)
…………………………………………………………………………………………………………………………………………………………………………………………………………
4.-In the early stages of development the seedling depends on the foodstore in the seed. As soon as the first leaves are produced, it is able to manufacture food for itself. (However)
…………………………………………………………………………………………………………………………………………………………………………………………………………

DEFINITIONS OF PROCESSES USING TIME EXPRESSIONS

What happens during these processes. Use time expressions (First,  then, next, after that, finally…)

1.-Germination
2.-Photosynthesis
3.-Pollination

EXPRESSIONS OF DEGREE

Look at the example and transform the sentences in the two ways shown:

The soil was dry. The seed could not germinate.

a.-The soil was too dry for the seed to germinate.

b.-The soil was so dry that the seed could not germinate

1.-The soil was compact. The plants could not grow.

2.-Soil aeration was weak. The plant could not get enough oxygen.

3.-The roots were small. The tree could not grow.

4.-It was dark. Photosynthesis could not take place.

5.-The terrain was wet. It could not produce a good crop.

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