Which one of the following performs photosynthesis in cactus?
Spines
Stem
Roots
Leaves
During what time of the day does the process shown here takes place in plants?
6 a.m
2 p.m
11 a.m
all the time
Which one of the following process is responsible for the release of oxygen by plants?
Respiration
Digestion
Reproduction
Photosynthesis
The function of veins present in leaves are
absorb water and minerals from the soil
absorb carbon dioxide from the atmosphere
transport water, food and minerals in a leaf
release oxygen and carbon dioxide into the atmosphere
Organic matter important for plant growth is
fertilizer
clay
pesticide
humus
Which one of the following is a seed containing stored food?
Potato
Mango
Maize
Grapes
Which one of the following time a plant may be preparing food?
1 a.m
10 a.m
10 p.m
midnight
Corn
Apple
Carrot
Which one of the following structure of a plant exchanges gases?
Buds
Fruits
Flowers
Hanief covered a leaf with black cover for a few days and then tested it with iodine solution for the presence of starch in it. The colour of the solution did not turn blue black. What does this indicate?
Black cover absorbed all the starch present in the leaf
Iodine solution does not work with black covers
Starch is evaporated from the leaves
Starch is not prepared in the absence of light
