Iodine can be used to test the presence of
glucose
cellulose
starch
none
The gas which is given off by chloroplasts in the Sunlight is
Oxygen
Water
Carbon dioxide
Chlorophyll
An absolute requirement in the process of photosynthesis is
Nitrogen
None
The autotrophic mode of nutrition requires
carbon dioxide and water
chlorophyll
sunlight
all of the above
The lower side of plant leaf contains
paliside cells
lenticels
stomata
none of these
Given below are the events of photosynthesis. Identify which of the following is/are not correct ?a) Absorption of light energy by chlorophyll.b) Conversion of light energy to chemical energy and splitting of carbon dioxide into carbohydrates and oxygen.c) Reduction of carbon dioxide to carbohydrates.d) Conversion of chemical energy to radiant energy and splitting of water molecules into hydrogen and oxygen.
a & b
b only
b and c
b and d
The molecule which is broken down during the light reaction of photosynthesis is
Carbondioxide
What happens when the left ventricle of human heart contracts ?
The oxygenated blood is forced into the main artery.
The deoxygenated blood is forced into the pulmonary artery.
The deoxygenated blood is pumped into the lungs through pulmonary artery.
The oxygenated blood go into different body organs through pulmonary vein.
A ____________ is a disc shaped membrane sac present in the granum of chloroplast.
Xylem
Phloem
Thylakoid
Stoma
Transpiration has been described as a necessary evil because it is inevitable, but potentially harmful. Which of the following are the after-effects of transpiration ?i) Absorption of mineral salts.ii) Regulation of plant temperature.iii) Wilting and injury in plants.iv) Ascent of sap.
i & iv
i,ii & iii
i,ii & iv
All of these