Emerson's enhancement effect and red drop have been instrumental in the discovery of
(1) two photosystems operating simultaneously
(2) photophosphorylation and cyclic electron transport.
(3) Oxidative phosphorylation
(4) photophosphorylation and non-cyclic electron transport
In a chloroplast the highest number of protons are found in
1. lumen of thylakoids
2. inter membrane space
3. antenna complex
4. Stroma
The oxygen evolved during photosynthesis comes from water molecules. Which one of the following pairs of elements involved in this reaction?
1. Manganese and chlorine
2. Manganese and potassium
3. Manganese and molybdenum
4. Magnesium and chlorine
In photosynthesis, the light-independent reactions take place at
1. thylakoid lumen
2. photosystem l
3. photosystem ll
4. stromal matrix
The structures that are formed by stacking of organised flattened membranous sacs in the chloroplasts are
1. cristae
2. grana
3. stroma lamellae
4. stroma
Anoxygenic photosynthesis is characteristic of
(1) Rhodospirillum
(2) Spirogyra
(3) Chlamydomonas
(4) Ulva
PGA as the first CO2 fixation was discovered in the photosynthesis of
(1) bryophyte
(2) gymnosperm
(3) angiosperm
(4) algae
Electrons from excited chlorophyll molecule of photosystem-II are accepted first by
1. cytochrome-b
2. cytochrome-f
3. quinone
4. ferredoxin
In the leaves of C4 -plants malic acid synthesis during CO2 fixation occurs in
(1) epidermal cells
(2) mesophyll cells
(3) bundle sheath
(4) guard cells
Carbohydrates are commonly found as starch in plant storage organs. Which of the
following five properties of starch (A-E) make it useful as a storage material?
(A) Easily translocated
(B) Chemically non-reactive
(C) Easily digested by animals
(D) Osmotically inactive
(E) Synthesized during photosynthesis
The useful properties are
1. (B) and (C)
2. (B) and (D)
3. (A), (C) and (E)
4. (A) and (E)