General Science


The requirements of Photosynthesis are: Carbondioxide, Water, sunlight and Chlorophyll.
The end products of Photosynthesis are: Glucose, Oxygen and Water.
A molecule that absorbs light of a specific wavelength in the visible region is called pigment.
The gas produced duriong photosynthesis is oxygen.
Dark reaction is discovered by Melvin clavin.
Iodine test can be used to identify the presence of starch.
Chlorophyll is present in mesophyll tissue of the leaf.
Cosmic rays, x-rays and Ultraviolet rays below 400nm and Infrared rays above 700nm.
Light is one part of electromagnetic radiation. The other parts are; Cosmic rays, gama rays, x-rays.
In submerged plants carbondioxide is supplied from bicarbonates and carbonates present in water by diffusion.
Melvin calvin got Nobel prise for his study on carbon fixation.
The reactions of photosynthesis which are occured in the presence of light are called light reactions.
The number of chloroplasts present in palisade parenchyma are more than spongy parenchyma.
In Reduction oxygen atoms are removed and Hydrogen atoms are added. Electrons are added to atoms.
The tiny particles of light rays are called photons. The energy carried by photon is called quantum
In the dark reaction of photosynthesis carbondioxide is reduced to glucose.
Water is transported to the leaf through the xylem tissue.
The visible light of electromagnectic radiation is between 400-700nm. It consists seven colours. They are: violet, Indigo, Blue, Green, Yellow, Orange and Red.
The substances which accept electrons are caqlled electron acceptors.
In palisade parenchyma elongated cells are presented in rows without inter cellular spaces whereas in spongy parenchyma cells are irregular with large inter cellular spaces.
Chtorophyll is a single pigment molecule whereas chloroplast consists different types of pigment molecules along with chlorophyll.
Red rays and blue rays in visible light are more suitable for photosynthesis due to their maximum wavetength absorption.