photosynthesis in higher plants - Details

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In C4 plants,the first carbon dioxide acceptor is

Phosphoenol pryvate

In photosynthesis, splitting of water and release of oxygen occurs during

Photolysis

Hill reaction occurs in

High altitude plants

Which one of the following categories of orgnisms do not evolve oxygen uring photosynthesis

Photosynthetic blue green algae

What is PAR range

400 nm-700 nm

Through the use of oxygen-18 (heavy oxygen), scientists have found that the oxygen released during photosynthesis comes from molecules of

Water

In a chloroplast the highest number of protons are found in

Lumen of thylakoids

The structures that are formed by stacking of organised flattened membranous sacs in the chloroplasts are

Grana

Chromoplasts take part in

Photosynthesis

The core metal of chloroplasts is

Magnesium

Suppose an aquatic plant is placed in a test tube containing distilled water and the tube is stopered. the tube is left outdoors for 24 hours and the pH value of water is then measured at regular intervals. which of the following is the most probable result?

The pH value is lowest just before sunrise

Chlorophyll in chloroplasts is located in

Grana

Plants adapted to low light intensity have

Larger photosynthetic unit size that the sun plants

Which fractions of the visible spectrum of solar radiation are primarily absorbed by carotenoids of the higher plants

Violet and blue

At a temperature above 35 degree celcius

Rate of photosynthesis will decline earlier than that of respiration

Protochlorophyll differs from chlorophyll in lacking

2 hydrogen atoms in one of its pyrrole rings

Chlorophyll "a" molecule at its carbon atom 3 pyrrole ring 2 has one of the following

Methyl group

Most plants are green in colour because

Chlorophyll is least effective in absorbing green light

Chlorophyll a occurs in

All oxygen liberating autotrophs

Photosynthetic pigments found in the chloroplasts occur in

Thylakoid membrane

The size of chlorophyll molecule is

Head 15*15 A,tail 20 A

Emerson's enhancement effect and red drop have been instrumental in the discovery of

Two photosystem operating simultaneously

Cytochromes are found in

Cristae of mitochondria

In photosynthesis the light dependent reactions take place in

Stromal matrix

Cyclic photophosphorylation results in the formation of

ATP

Electrons from excited chlorophyll molecule of photosystem 2 are accepted first by

Quinone

The first acceptor of electrons from an excited chlorophyll molecule of photosystem 2 is

Quinone

In photosystem 1 the first electronacceptor is

An iron-sulphur protien

Photochemical reactions in the chloroplast are directly involved iin

Protolysis of water and phosphorylation of ADP and ATP

NADPH is generated through

Photosystem 1

Pigment acting as a reaction centre during photosynthesis is

P700

Photosystem 2 occurs in

Grana

Ferredoxin is a constituent of

PS 2

A plant in your garden avoids photorespiratory losses, has improved water use efficiency, shows high rates of photosynthesis at high temperatures and has improved efficiency of nitrogen utilisation. in which of the following physiological groups would you assign this plant

In kranz anatomy, the bundle sheath cells have

Thick walls, no intercellular spaces and large number of chloroplasts

C4 plants are more efficient in photosynthesis than C3 because

Of lower rate of photorespiration

In leaves of C4 plants malic acid synthesis during CO2 production occurs in

Mesophyll cells

The enzyme which fixes CO2 in C4 plants is

PEP carboxylase

Thecarbon dioxide acceptor in calvin cycle/C3 plants is

Ribulose 1,5-diphosphate (RuBP)

Photorespiration is favoured by

High O2 and low CO2

Which one of the following is represented by calvin cycle

Reductase carboxylation

Series of reactions which can convert fatty acids to sugar in plants but not in animals

Glyoxylate cycle

The first carbon dioxide acceptor in C4 plants is

Phosphoenol pyruvate

Dark reactions of photosynthesis occur in

Stroma outside photosynthetic lamellae

Which technique has helped i investigation of calvin cycle

Radioactive isotope technique

During monsson, the rice crop of eastern states of india show lesser yield due to limiting factor of

Light

The substrate for photosynthesis is

Glycolate

In C4 plants calvin cycle operates in

Stroma of bundle sheath chloroplasts

Carbon dioxide joins the photosynthetic pathway in

Dark reaction

NADP+ is reduced to NADPH in

Noncyclic photophosphorylation

The C4 plants are photosynthetically more efficient than C3 plants because

They have more chloroplast

During photorespiration, the oxygen consuming reaction occur in

Stroma of chloroplasts and peroxisomes

As compared to a C3-plant , how many additional molecules of ATP are needed for net production of one molecule hexose sugar by C4 plants

Twelve

Photosynthetically active radiation is represented by a range of wavelength of

400-700 nm

In C3 plants , the first stable product of photosynthesis during the dark reaction is

3-phosphoglyceric acid

In sugarcane plant 14 CO2 is fixed in malic acid , in which the enzyme that fixes CO2

Phosphoenol pyruvic acid carboxylase

How man turns of calvin cycle yeild one molecule of glucose

Six

In photosynthesis energy from light reaction to dark reaction is transferred in the form of

ATP

Glycolate induces opening of stomata in

Low CO2 conc.

photosynthesis in higher plants

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