9c: Plants and photosynthesis

Which of the following is not involved in the process of photosynthesis?
1. carbon monoxide
2. chlorophyll
3. oxygen
4. water
We can test a leaf for starch using which chemical?
1. Iodine
2. Benedicts
3. Biuret
4. Hydrochloric acid
Green plants are special because they
1. can make their own food
2. are green
3. they grow quickly
4. they are resistant to disease
The test for oxygen gas is?
1. It will re-light a glowing splint
2. Squeaky pop
3. Turns limewater cloudy
4. Goes blue/black with iodine
The test for carbon dioxide gas is?
1. Turns limewater cloudy
2. Re-lights a glowing splint
3. Squeaky pop
4. Reacts with benedicts solution turning it a brick red colour
We can test for sugar using
1. benedicts solution
2. iodine
3. biuret solution
4. Hydrochloric acid
When a plant photosynthesises it produces
1. oxygen
2. carbon dioxide
3. water
4. stripes
Leaves which have patches of white and green are called
1. variegated leaves
2. stripy leaves
3. patterned leaves
4. diseased leaves
Plants are green because they contain
1. chlorophyll
2. photosynthesis
3. green dye
4. starch
The surface of the leaf has a ………….layer to reduce water loss.
1. waxy
2. green
3. holey
4. spongy
Which cells contain the chloroplasts?
1. Palisade
2. blood cells
3. spongy cells
4. stoma
Gases pass into and out of the leaf through
1. stomata
2. palisade cells
3. spongy cells
4. the waxy layer
Which part of the leaf is darker green?
1. The top
2. The middle
3. The lower layer
4. It depends on the type of plant
Veins in a plant carry
1. water up from the stem
2. gases around the plant
3. chloroplasts around the plant to follow the sunlight
4. water out of the plant if it gets too wet
Photosynthesis is essentially the reverse process of
1. respiration
2. breathing
3. neutralisation
4. bubbling
The plants stores the energy as
1. starch
2. fats
3. cellulose
4. carbon dioxide
The plant takes water up from the soil through
1. root hair cells
2. leaves
3. the stem
4. their veins
The plant transports the water up the stem in the
1. xylem
2. phloem
3. leaves
4. flowers
The plant transports the food around the plant in tiny tubes called
1. phloem
2. xylem
3. root hairs
4. flowers
Plants lose water from their leaves by
1. evaporation
2. condensation
3. wind blowing
4. forcing it out of the leaves
Plants take water and ……………up through their roots.
1. minerals
2. soil
3. food
4. carbon dioxide
Air contains approximately what percentage of oxygen?
1. 21%
2. 78%
3. 9%
4. 0.04%
What percentage of the air is carbon dioxide?
1. 0.04%
2. 21%
3. 78%
4. 4%
The way that carbon is recycled and reused is called
1. the carbon cycle
2. recycling
3. cycling
4. the nitrogen cycle
During the course of a day when are the levels of oxygen likely to be at their highest?
1. Midday
2. Midnight
3. They remain constant
4. It is not possible to tell
Which of the following is not going to be one of the results of clearing rainforests?
1. Increase in soil fertility
2. Decrease in soil fertility
3. Loss of wildlife habitats
4. Hardwoods become endangered
If we increase the amount of light a plant receives
1. it will photosynthesise more
2. it will produce more carbon dioxide
3. it will grow slower
4. it will slowly die
Which of the following factors will not slow the rate of photosynthesis?
1. Increased light levels
2. Decreased light levels
3. A cloudy day
4. Damaged leaves
How does the starch made in the leaves get into a potato?
1. Through the phloem
2. Through the xylem
3. Through the leaves
4. Though the cells
At night, plants
1. give out carbon dioxide and don't take in oxygen
2. take in oxygen and give out carbon dioxide
3. take in carbon dioxide and oxygen
4. don't take in or give out any gases