Plant Physiology
Topics
- Photosynthesis: site and pigments
- Light reactions, cyclic and non-cyclic photophosphorylation, chemiosmosis
- C3 and C4 pathways, photorespiration
- Factors affecting photosynthesis
- Glycolysis and fermentation
- TCA cycle and electron transport system, ATP yield
- Amphibolic pathway and respiratory quotient
- Seed germination, phases and rate of growth, conditions of growth
- Differentiation, dedifferentiation, redifferentiation, development
- Plant growth regulators: auxin, gibberellin, cytokinin, ethylene, ABA
Chapter tests
See all →Top questions
See all →- Which of the following statements about RuBisCO is true? Answer: 4. It catalyzes the carboxylation of RuBP. Key idea: RuBisCO is the carboxylating enzyme of the Calvin cycle. It catalyses carboxyla... 1
- Read the following statements on plant growth and development.A. Parthenocarpy can be induced by auxins.B. Plant growth regulators can be involved in promotion as well as inhibition of growth.C. Dedifferentiation is a pre-requisite for re-differentia… Answer: 1. A, B, C only Key idea: Check each statement. A true: auxins can induce parthenocarpy. B true: PGRs may promote or inhibit growth.... 1
- Match List I with List II :List I: A. Chlorophyll a; B. Chlorophyll b; C. Xanthophylls; D. CarotenoidsList II: I. Yellow-green; II. Yellow; III. Blue-green; IV. Yellow to Yellow-orangeChoose the option with all correct matches. Answer: 2. A-III, B-I, C-II, D-IV Chlorophyll a: blue-green (III) Chlorophyll b: yellow-green (I) Xanthophylls: yellow (II) Carotenoids: yel... 1
- Which one of the following phytohormones promotes nutrient mobilization which helps in the delay of leaf senescence in plants? Answer: 4. Cytokinin Key idea: Cytokinins delay leaf senescence by promoting nutrient mobilisation. Ethylene and abscisic acid promote senes... 1
- The complex II of mitochondrial electron transport chain is also known as Answer: 2. Succinate dehydrogenase Key idea: Complex II of the electron transport chain is succinate dehydrogenase. It is the Krebs cycle en... 1
- Given below are two statements:Statement I : In C_3 plants, some O_2 binds to RuBisCO, hence CO_2 fixation is decreased.Statement II : In C_4 plants, mesophyll cells show very little photorespiration while bundle sheath cells do not show photorespira… Answer: 4. Statement I is true but Statement II is false Key idea: O₂ competes with CO₂ for RuBisCO in C₃ plants, but C₄ plants avoid photor... 1