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Q.46 Given below are two statements: one is labelled as Assertion-A and the other is labelled as Reason-R Assertion-A: Removal of apical bud (decapitation) causes loss of apical dominance. Reason-R: […]

Q.45 Given below are two statements: one is labelled as Assertion-A and the other is labelled as Reason-R Assertion-A: Lateral heterogeneity is the unequal distribution of thylakoid complexes. Reason-R: PS-II […]

Q.44 Given below are two statements: one is labelled as Assertion-A and the other is labelled as Reason-R Assertion-A: Observation of cyclosis or cytoplasmic streaming is an indication of active […]

Q.43 Given below are two statements: one is labelled as Assertion-A and the other is labelled as Reason-R Assertion-A: Growth is an irreversible increase in volume or size. Reason-R: The […]

Q.42 Given below are two statements: one is labelled as Assertion-A and the other is labelled as Reason-R Assertion-A: Eubacteria are sensitive to chloramphenicol Reason-R: All bacteria are sensitive to […]

Q.41 Given below are two statements: one is labelled as Assertion-A and the other is labelled as Reason-R Assertion-A: Regions of active cell division are responsible for the increase in […]

Q.40 Cyanophyceae in general are Autotrophs Heterotrophs Obligate photoautotrophs Obligate heterotrophs Cyanophyceae (blue-green algae or cyanobacteria) are generally autotrophs. They perform oxygenic photosynthesis using chlorophyll-a, fixing CO₂ into organic compounds. Question […]

Q.39 Endospores can be formed by which of the following: Gram (−) negative bacteria Gram (+) positive bacteria Both of the above None of the above Gram-positive bacteria form endospores […]

Q.38 Which one of the following is an obligate anaerobe Halobacterium Thermus aquaticus Chlamydomonas nivalis Clostridium Clostridium is the obligate anaerobe among the options. These bacteria cannot tolerate oxygen due to […]

Q.37 Stomatal opening is stimulated by Red-light Yellow light Blue light Green light Blue light is the primary stimulus for stomatal opening. This occurs through specific photoreceptors in guard cells that […]