Light rays consist of tiny particles called
Photons
Electrons
Protons
None of these
When plants are kept in darkness, the ________ becomes inactive.
Chlorophyll
Xanthophyll
Mesophyll
When asked to set up an experiment to show that 'light is necessary for photosynthesis', a student ran to the school garden and set up the experiment by using a plant growing in the school garden.The experiment failed.His classmates made the following suggestions to get success in the experiment:Student A : Safranin should be used instead of iodineStudent B : The leaf should not be boiled in alcohol to remove chlorophyll before testing for starchStudent C : Transparent paper should be used instead of black paper stripStudent D : The leaf should be destarched before starting the experiment. The correct suggestion is given by:
student A
student B
student C
student D
In order to destarch the leaves for an experiment to show that sunlight is necessary for photosynthesis, the :
leaves are kept in alcohol and boiled in a water bath
leaves are soaked in iodine for two hours
plants with the leaves is kept in dark room for 48 hours
plant with the leaves is exposed to light of a lamp, a night before the experiment
The energy carried by a photon is called
Joule
Watts
Quantum
None
The autotrophic mode of nutrition requires
carbon dioxide and water
chlorophyll
sunlight
all of the above
Iodine can be used to test the presence of
glucose
cellulose
starch
none
CO2 enters through stomata into the cells by
Imbibition
Plasmolysis
Diffusion
An example of Dichogamy pollination is
Primrose
Palm
Banyan
Which of the following molecules are located in the thylakoid membrane?
Phaeophytin
Rhodophytin
