The correct answer is A - cactus, B - conifers, C - hydrilla, D - lotus.Explanation:a. stems and leaves have thick waxy coatingCactus are dicots with a fleshy, green photosynthetic stem called the cladophyll.A cactus has a thick waxy coating that helps it retain water.A cactus has a thick, folded stem that allows it to store as much water as possible during short periods of wet weather.The water inside the cactus is kept from evaporating by a thick, waxy coating on the stems and leaves.b. leaves are needle-shaped and are shed rapidlyConifers are distinguished by their reproductive process, which includes the production of cones. They also have leaves that are needle-shaped or scale-shaped. Like needles, needle leaves are long and thin.Evergreen conifers shed needles in the same way that deciduous trees lose leaves, but over a longer period of time.c. leaves are finger likeHydrilla (Hydrilla verticillata), also known as water thyme.Hydrilla is a hardy, fast-growing perennial with long, slender stems that can reach a length of 7 metres (23 feet).The leaves are small, lance-shaped or oblong, and distinctly toothed, and grow in pairs or whorls of three to eight. Thus, the leaves of the hydrilla are finger-like.d. stems have holesThe lotus plant grows in open freshwater, with large portions of the plant submerged.Lotus roots are found buried in anaerobic sediment and are distinguished by oval holes in the stems for obtaining oxygen.Mistake Points As, per the official answer key (CTET) the answer to this question is option 2, but according to the above explanation, the answer is option 4.