Photosynthesis in Higher Plants PYQs

2(C₅₁H₉₈C₆) + 145 O₂ → 102 CO₂ + 98 H₂O + energy The Respiratory Quotient (RQ) of a biomolecule used for respiration, as per the above equation would be:

Find the incorrect statement(s) about photosynthesis from the following: A. The water splitting complex is associated with PS I. B. C$_4$ plants use the C$_3$ pathway of CO$_2$ fixation as the main biosynthetic pathway. C. In C$_4$ plants, photorespiration does not occur. D. C$_3$ plants exhibit 'Kranz' anatomy. E. ATP synthesis in chloroplast occurs through chemiosmosis. Choose the answer from the options given below:

The enzyme required for carboxylation in the Calvin cycle is

How many ATP and NADPH molecules are required to make one molecule of glucose through the Calvin pathway?

Match List I with List II : Choose the option with all correct matches.

Which of the following statements about RuBisCO is true?

Formation of interfascicular cambium from fully developed parenchyma cells is an example for

Which of the following are required for the dark reaction of photosynthesis? A. Light B. Chlorophyll C. CO₂ D. ATP E. NADPH Choose the correct answer from the options given below:

How many molecules of ATP and NADPH are required for every molecule of CO₂ fixed in the Calvin cycle?

Bulliform cells are responsible for

Given below are two statements: Statement I : In C₃ plants, some O₂ binds to RuBisCO, hence CO₂ fixation is decreased. Statement II : In C₄ plants, mesophyll cells show very little photorespiration while bundle sheath cells do not show photorespiration. In the light of the above statements, choose the correct answer from the options given below:

Given below are two statements : One is labelled as Assertion A and the other is labelled as Reason R : Assertion A : The first stage of gametophyte in the life cycle of moss is protonema stage. Reason R : Protonema develops directly from spores produced in capsule. In the light of the above statements, choose the most appropriate answer from the options given below :

Movement and accumulation of ions across a membrane against their concentration gradient can be explained by

Which micronutrient is required for splitting of water molecule during photosynthesis?

The reaction centre in PS II has an absorption maxima at

Given below are two statements : Statement I : The forces generated by transpiration can lift a xylem-sized column of water over 130 meters height. Statement II : Transpiration cools leaf surfaces sometimes 10 to 15 degrees, by evaporative cooling. In the light of the above statements, choose the most appropriate answer from the options given below :

How many ATP and NADPH₂ are required for the synthesis of one molecule of Glucose during Calvin cycle?

Identify the pair of heterosporous pteridophytes among the following :

Match List I with List II : Choose the correct answer from the options given below :

Which of the following combinations is required for chemiosmosis?

Match List I with List II : Choose the correct answer from the options given below :

Which of the following is not observed during apoplastic pathway?

Which one of the following plants does not show plasticity?

Which one of the following is not true regarding the release of energy during ATP synthesis through chemiosmosis? It involves:

Given below are two statements: Statement I: The primary CO₂ acceptor in C₄ plants is phosphoenolpyruvate and is found in the mesophyll cells. Statement II: Mesophyll cells of C₄ plants lack RuBisCO enzyme. In the light of the above statements, choose the correct answer from the options given below:

Match List-I with List-II: Choose the correct answer from the options given below :

‘Girdling Experiment’ was performed by Plant Physiologists to identify the plant tissue through which:

Addition of more solutes in a given solution will:

What is the role of large bundle sheath cells found around the vascular bundles in C₄ plants?

The first stable product of $CO_2$ fixation in Sorghum is

Match List-I with List-II. Choose the correct answer from the options given below.

Which of the following statements is incorrect?

Match Column-I with Column-II. Choose the correct answer from the options given below.Match Column-I with Column-II. Choose the correct answer from the options given below.

The product(s) of reaction catalyzed by nitrogenase in root nodules of leguminous plants is/are

Match the following concerning essential elements and their functions in plants: Select the correct option

Identify the incorrect statement.

The process responsible for facilitating loss of water in liquid form from the tip of grass blades at night and in early morning is:

The oxygenation activity of RuBisCO enzyme in photorespiration leads to the formation of:

In light reaction, plastoquinone facilitates the transfer of electrons from:

Which of the following is not an inhibitory substance governing seed dormancy?

In Hatch and Slack pathway, the primary $CO_2$ acceptor is

One scientist cultured Cladophora in a suspension of Azotobacter and illuminated the culture by splitting light through a prism. He observed that bacteria accumulated mainly in the region of :

Which of the following is not a feature of active transport of solutes in plants?

What will be the direction of flow of water when a plant cell is placed in a hypotonic solution?

Oxygen is not produced during photosynthesis by:

In which of the following forms is iron absorbed by plants?

Which of the following is not a product of light reaction of photosynthesis?

Stomatal movement is not affected by:

Identify the wrong statement in context of heartwood.

With reference to factors affecting the rate of photosynthesis, which of the following statements is not correct?

Zygotic meiosis is characteristic of

Life cycle of Ectocarpus and Fucus respectively are

Phosphoenol pyruvate (PEP) is the primary CO$_2$ acceptor in:

The water potential of pure water is

Which of the following facilitates opening of stomatal aperture?

A few drops of sap were collected by cutting across a plant stem by a suitable method. The sap was tested chemically. Which result indicates that it is phloem sap?

Which is essential for the growth of root tip?

The process which makes major difference between C₃ and C₄ plants is

Root pressure develops due to:

The oxygen evolved during photosynthesis comes from water molecules. Which one of the following pairs of elements is involved in this reaction?

Chromatophores take part in:

Roots play insignificant role in absorption of water in:

A column of water within xylem vessels of tall trees does not break under its weight because of:

In photosynthesis, the light-independent reactions take place at:

Dr. F. Went noted that if coleoptile tips were removed and placed on agar for one hour, the agar would produce a bending when placed on one side of freshly-cut coleoptile stumps. Of what significance is this experiment?

Deficiency symptoms of nitrogen and potassium are visible first in:

In which one of the following processes is CO₂ not released?

The first stable product of fixation of atmospheric nitrogen in leguminous plants is

For its action, nitrogenase requires:

In Kranz anatomy, the bundle sheath cells have:

Which one of the following is not an essential mineral element for plants while the remaining three are?

Which one of the following is essential for photolysis of water?

Guttation is the result of:

Read the following four statements A, B, C and D and select the right option having both correct statements. (A) Z-scheme of light reaction takes place in presence of PSI only. (B) Only PSI is functional in cyclic photophosphorylation. (C) Cyclic photophosphorylation results in synthesis of ATP and $NADPH_2$. (D) Stroma lamellae lack PSII as well as NADP reductase. The correct statements are :

Kranz anatomy is one of the characteristics of the leaves of :

Study the pathway given below. In which of the following options correct words for all the three blanks A, B and C are indicated.

Which one of the following is a xerophytic plant in which the stem is modified into a flat, green and succulent structure?

Guard cells help in:

Manganese is required in:

Oxygenic photosynthesis occurs in:

Cyclic photophosphorylation results in the formation of:

In germinating seeds fatty acids are degraded exclusively in the

The C$_4$ plants are photosynthetically more efficient than C$_3$ plants because

The rupture and fractionation do not usually occur in the water column in vessel/tracheids during the ascent of sap because of

In leaves of C$_4$ plants malic acid synthesis during CO$_2$ fixation occurs in

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

Write the location and function of Phytol chain.

In photorespiration, RuBP is oxidized to form glycolate and glycerate. Which of the following flow diagrams correctly represents the photorespiratory (PCO) cycle involving chloroplasts, peroxisomes and mitochondria?

In photosystem-I, the first electron acceptor is:

Sulphur is an important nutrient for optimum growth and productivity in:

During photorespiration the oxygen consuming reaction(s) occur in:

The translocation of organic solutes in sieve tube members is supported by:

Photosynthesis in C4 plants is relatively less limited by atmospheric CO$_2$ levels because:

Auxospores and hormocysts are formed, respectively, by:

As compared to a C$_3$ plant, how many additional molecules of ATP are needed for net production of one molecule of hexose sugar by C$_4$ plants?

The ability of the Venus flytrap to capture insects is due to:

During which stage in the complete oxidation of glucose are the greatest number of ATP molecules formed from ADP?

Carbohydrates, the most abundant biomolecules on earth, are produced by:

The deficiencies of micro-nutrients not only affects growth of plants but also vital functions such as photosynthetic and mitochondrial electron flow. Among the list given below, which group of three elements shall affect most, both photosynthetic and mitochondrial electron transport?

Chemiosmotic theory of ATP synthesis in the chloroplasts and mitochondria is based on:

Potometer works on the principle of:

Photosynthetic Active Radiation (PAR) has the following range of wavelengths: