In gourds, axillary buds develop spirally coiled structures called

Give scientific reasons : Opuntia has phylloclade.

A horizontal underground stem is a

In aquatic plants like Pistia and Eichhornia, leaves and roots are found near $.........$

The weak stemmed plants which can climb with the help of thorns, spines, prickles are

Identify the correct set of statements :

$(a)$ The leaflets are modified into pointed hard thorns in Citrus and Bougainvillea

$(b)$ Axillary buds form slender and spirally coiled tendrils in cucumber and pumpkin

$(c)$ Stem is flattened and fleshy in Opuntia and modified to perform the function of leaves

$(d)$Rhizophora shows vertically upward growing roots that help to get oxygen for respiration

$(e)$ Subaerially growing stems in grasses and strawberry help in vegetative propagation

Choose the correct answer from the options given below: