A. The flowers of Vallisneria are colourful and produce nectar.
B. The flowers of water lily are not pollinated by water.
C. In most of water-pollinated species, the pollen grains are protected from wetting.
D. Pollen grains of some hydrophytes are long and ribbon like.
E. In some hydrophytes, the pollen grains are carried passively inside water.
Choose the correct answer from the options given below.
Bulliform cells are large, bubble-like epidermal cells found in monocots. When they lose water, they become flaccid and cause the leaf to roll inward. This curling reduces surface area and transpiration, helping the plant conserve water during drought. So option 2 (Inward curling of leaves in monocots) is correct.
? Did You Know?
Most monocots with bulliform cells include grasses like wheat and rice, which roll their leaves to cope with water stress.
? NCERT Memory Line:
Bulliform cells help in leaf rolling under water stress in monocots.
In a plant, black seed color (BB/Bb) is dominant over white seed color (bb). In order to find out the genotype of the black seed plant, with which of the following genotype will you cross it?
Explanation: NCERT Page no.70 (Topic-5.1 MENDEL'S LAWS OF INHERITANCE)
