Harish wants to test the presence of starch in a leaf. Given below are the instructions to conduct the experiment. Which one of the following step is NOT necessary?
boil the leaf first in water and then in alcohol
wash the bleached leaf
heat the leaf on a hot flame
add a few drops of iodine solution to the bleached leaf
Which one of the following is not needed for photosynthesis?
Iodine solution
Carbon dioxide
Chlorophyll
Water
Which one of the following are called food factories of the plant?
Leaves
Stem
Roots
Flowers
The leaves of the plants are green because
they are born from green coloured seeds
photosynthesis occurs in the leaves
of the presence of a green pigment called chlorophyll
of the presence of network of veins
Which one of the following does not belong to the example of underground stems?
Ginger
Onion
Potato
Carrot
In radish, food is stored in
leaves
stem
roots
flowers
Plants store extra food in the form of
oxygen
carbon dioxide
chlorophyll
starch
Cactus is a desert plant. To minimise loss of water it does not have leaves. The stem is green and waxy and prepares food for the plant. This shows that:
habitat changes according to plants
plants modify according to habitats
cactus is insectivorous in nature
wax is obtained from cactus
During photosynthesis, plants use _____ gas and release ______ gas.
Carbon dioxide , Oxygen
Oxygen, Carbon dioxide
Oxygen, Nitrogen
NItrogen, Oxygen
The tiny pores present on the leaves of plants are called
stomata
cells
grains
