Which structural feature of guard cells facilitates their function in stomatal regulation MOST effectively?
Uniformly thickened cell walls.
Radially oriented cellulose microfibrils in the cell walls.
Large central vacuole for water storage.
Presence of chloroplasts for photosynthesis.
Related Questions
Alternate phyllotaxy is seen in
Guava
Calotropis
Mustard
Alstonia
Insectivore plants such as pitcher plant, venus fly trap have
Modified leaf
Modified stem
Modified root
All of the above
Which of the following plant parts in garlic and onion are edible?
Underground stem
Fleshy leaves
Tunic
Adventitious roots
The leaves of Smilax and Colocasia show
Parallel venation
Reticulate venation
Forward venation
Lateral venation
Study the following statements and choose the correct option I.Buds are present in the axil of leaflets of the compound leaf II.Pulvinus leaf-base is present in some leguminous plants. III.In Alstonia, the petioles expand, become green and synthesize food IV.Opposite phyllotaxy is seen in guava
II and IV are correct but I and III are wrong
I and III are correct but II and IV are wrong
I and IV are correct but II and III are wrong
II, III and IV are correct but I is wrong
Swollen and spongy petioles are characteristic of
Trapa
Wolffia
Ceratophyllum
Limnophila
Identify the structure that does NOT originate from a modified stem.
Thorns
Tubers
Bulbs
Spines
Empty glumes are
Petals
Bracts
Anthers
Carpels
Identify the order of plants showing alternate, opposite and whorled phyllotaxy.
China rose, Calotropis and Nerium
China rose, Nerium and Calotropis
Nerium, China rose and Calotropis
Nerium, Calotropis and China rose
A compound leaf, which appears as simple leaf due to the suppression of one or two leaflets is found in one of the following plants
Hardwickia
Parkinsonia
Coriandrum
Citrus
