STD 11 - 12. Respiration in plants — NEET STD 11 Science — Question

Read the following.
(i) Electron transport between PS-II to PS-I produces ATP by substrate level phosphorylation.
(ii) In PS-II, the oxidation of two water molecules produces four electrons, four protons, & a single O₂.
(iii) PS-II reduces NADP+ to NADPH.
(iv) Light and dark reactions are stopped in the absence of light.
(v) Calvin cycle occurs in the grana of chloroplast.
(vi) ATP is produced during light reaction via chemiosmosis.
(vii) The C₄ plants respond to higher temperatures while C₃ plants have a much lower temperature optimum.
(viii) Temperate plants have a higher temperature optimum than the plants adapted to tropical climates.
(ix) Some C₃ plants are allowed to grow in CO₂ enriched atmosphere that leads to higher yields.
(x) Water stress causes the stomata to remain open hence enhancing the CO₂ availability.
choose the incorrect statements.

It is based on information like chromosome number, structure, behaviour.

Sorghum and sugarcane plants show saturation at about

Which of the following is true for crossing over ?
(i) Crossing over is the exchange of genetic material between two homologous chromatids.
(ii) Crossing over is also an enzyme-mediated process and the enzyme involved is called recombinase.
(iii) Crossing over leads to recombination of genetic material on the two chromosomes.
(iv) Recombination between homologous chromosomes is completed by the end of diplotene.
(v) Crossing over started in pachytene.
(vi) It is responsible for variation in organism.

The rosette habit of cabbage can be changed by application of

Leaves of dicotyledon plants generally exhibits