Prepare for NEET with Botany-specific practice questions. Covering all major Botany chapters, this is perfect for your NEET Biology needs.
Which of the following features is NOT characteristic of the members of the kingdom Fungi?
Heterotrophic mode of nutrition
Presence of chlorophyll a and b
Cell wall made of chitin
Reproduction by spores
Which element is essential for the synthesis of chlorophyll and is often taken up as a divalent cation?
Calcium
Potassium
Magnesium
Iron
Which element is essential for the synthesis of chlorophyll?
Calcium
Potassium
Magnesium
Iron
Which mineral is a constituent of the ring structure of chlorophyll?
Iron
Magnesium
Manganese
Zinc
The dominant pigment in Chlorophyceae is:
Chlorophyll b
Chlorophyll c
Chlorophyll a
Carotenoids
The major pigment found in Chlorophyceae is:
Chlorophyll a and b
Chlorophyll c and d
Phycoerythrin
Phycocyanin
Fucoxanthin, a prominent pigment in Phaeophyceae, masks other pigments. Under which light conditions would chlorophyll a's fluorescence be MOST readily observable in these algae?
Blue light
Red light
Green light
Yellow light
Which of the following is the major pigment responsible for the brown color of Phaeophyceae?
Chlorophyll a
Chlorophyll b
Phycoerythrin
Fucoxanthin
Iron deficiency in plants often leads to interveinal chlorosis. Considering the role of iron in electron transport and chlorophyll synthesis, which statement BEST explains this observation?
Iron is a key component of the electron transport chain, and its deficiency disrupts energy production needed for chlorophyll synthesis in the interveinal areas.
Iron is essential for chlorophyll synthesis, and its deficiency leads to reduced chlorophyll production, primarily in the interveinal areas.
Iron deficiency primarily affects the vascular tissue of the leaves, leading to reduced chlorophyll transport to the interveinal areas.
Iron deficiency enhances chlorophyll degradation in the interveinal areas, leading to chlorosis.
How does the availability of magnesium ions (Mg2+) directly influence the light-dependent reactions of photosynthesis?
Mg2+ acts as a cofactor for Rubisco, facilitating CO2 fixation.
Mg2+ is a component of the electron transport chain, mediating electron flow.
Mg2+ is essential for chlorophyll structure and function, influencing light absorption and energy transfer.
Mg2+ regulates stomatal opening and closing, controlling CO2 uptake.
