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Worksheets07.01.21 GRADE 3 SCIENCE
Total questions: 20
Worksheet time: 30mins
What is the name of the holes in leaves that are opened and closed to allow water to TRANSPIRE?
water doors
stomata
leaf eyes
If plants don't store up water, how does water leave the plant?
The roots get rid of excess water.
Most plants DO store water.
It is released from the leaves by TRANSPIRATION.
When water evaporates from the stomata into the atmosphere, what state is it in ?
Choose the correct answer
a.liquid b.solid c.gas
(a)
What is the effect of increasing light and warmth in transpiration?
It decreases transpiration rates
It increases transpiration rate
Transpiration is a part of (a) ?
Choose the correct answer
a.photosynthesis b.evaporation c.germination
Transpiration is the loss of ……………………….from the …………………… of plants
water vapour, germination
water vapour, photosynthesis
water vapour, leaves
Plants give off water vapour into the
atmosphere through (a) .
Choose the correct answer
a.stomata b.chlorophyll
The process by which plants lose water through stomata is called -------------------------------------.
Choose the correct answer- a.respiration b.transpiration
(a)
Desert plants do not lose much water because -----------------------------------------------------
Choose the correct answer-a.they store water in the stem. b.they do not have broad and flat leaves.
(a)
The ------------------------------ the leaf, the lesser the surface and the lesser the water loss.
Choose the correct answer
a.larger b.smaller
(a)
Look at these pictures. The children are setting up an experiment to see how bean seeds are affected by TEMPERATURE.
Name the factor they are changing.
amount of water
kind of seed
different places (amount of warmth)
number of seeds
The process by which seeds or beans start to grow shoots and roots is called ------------------------------.
Choose the correct answer
a.transpiration b.germination c.photosynthesis
(a)
Ahmed wonders how well plants grow in different places. Choose the place where plants would grow best.
Asif felt that plants will grow very well in a greenhouse. Why did he feel that plants will grow really well there?
-------------------------------------------------------------------
Choose the correct answer
a.because he can see the plants. b.because it is warm in there.
(a)
Amal and Ahmed are carrying out an investigation to find out HOW MUCH WATER do growing seeds need to be healthy. They are using bowls, mustard seeds, water and cotton. What factor should they change?
kind of seed
number of seeds
amount of water
number of days
Amal and Ahmed are carrying out an investigation to find out HOW MUCH WATER do growing seeds need to be healthy. They are using bowls, mustard seeds, water and cotton. What factors should they keep the same?
number of seeds
amount of water
kind of seeds
place
number of seeds
kind of seeds
number of days
place
Which kind of leaf will lose more water through stomata ?
Germination is ---------------------------------
When a seed starts to grow
When a plant lose water through stomata
When a plant makes its own food.
What do seeds need to germinate (grow into a new plant)?
Air,warmth, water
air, light , food
water, light, food
Which of the following describes process no.2?
First leaves grow and carry out photosynthesis
Root grows
Seed coat is broken
