In a CAM plant undergoing a prolonged drought, which physiological change would be MOST prominent in its leaves during the daytime?
Stomata open, and CO2 is directly fixed by RuBisCO.
Stomata remain closed, and malate is decarboxylated to release CO2.
Stomata partially open, and PEP carboxylase fixes atmospheric CO2.
Stomata remain closed, and the Calvin cycle ceases completely.
Related Questions
Epiphyllous buds are found in
Ceratophyllum
Bouganvellia
Bryophyllum
Bulbophyllum
Which of the following is NOT a function of a leaf?
Photosynthesis
Transpiration
Gas exchange
Absorption of water from soil
Leaf blade is spinous in case of
Nerium
Ziziphus
Argemone
Cannabis
Generally, the parallel venation is found in
Gymnosperm
Pteridophytes
Monocotyledons
Dicotyledons
The network of veins in a leaf primarily serves to:
Store food
Perform photosynthesis
Protect the leaf
Transport water and nutrients
Which tissue layer is responsible for the transport of organic materials synthesized in the leaf?
Xylem
Phloem
Palisade parenchyma
Spongy parenchyma
Petiole
Helps to hold the leaf blade
Allows leaf blades to flutter wind
Helps in cooling the leaf
All of the above
Main axis continues to grow, the flowers are borne laterally in acropetal succession. This is a characteristic of which type of inflorescence?
Cymose
Racemose
Either (1) or (2)
Both (1) and (2)
Which function is NOT typically associated with a stem modification?
Food storage
Support
Vegetative propagation
Absorption of nutrients from the soil
In cauliflower, the inflorescence is
A branched cluster of yellow flowers.
Modified into a compact, white head composed of undeveloped flower buds.
A single large flower surrounded by green sepals.
A long, trailing vine with small white flowers.
