Question

The orchid plants, which are found growing on the trees, are
A Parasites
B Epiphytes
C Saprophytes
D Lithophytes

Answer 1

Hint Symbiotic relationships are creatures that live together in greater or less intimate association or close union. Or the close cohabitation of two distinct species in a mutually beneficial partnership.

Complete step by step answer:
Parasitism is a symbiotic connection between species in which one organism, the parasite, lives on or inside the host, causing it harm, and is structurally adapted to this way of life.
An epiphyte is a plant that grows on its surface and gets its moisture and nutrients from the air, rain, water, or detritus that collects around it. Epiphytes, like any other creature, participate in nutrient cycles and contribute to the diversity and biomass of the ecosystem in which they live.
Saprophytes are living organisms that feed on the remains of other organisms. In the field of soil biology, they are particularly essential. They break down complex organic stuff into simpler chemicals that plants can use for a variety of metabolic functions. Saprophytes include fungi and a few bacteria.
Epiphytes, or plants that grow on other plants, account for over 70% of all orchids. Epiphytic orchids are primarily found in the tropics and subtropics, where day length and sun angle are relatively constant throughout the year and temperature ranges are generally stable and above freezing.
While epiphytic orchids can grow on practically any section of a tree, the majority of orchid species prefer the inner branches and limbs of large, mature trees that are midway up and in light shade. Orchids are found in certain tree species on a regular basis.

So, option B is the correct answer.

Note: Smooth-barked trees are less favourable to orchid growth than rough-barked trees that allow some moisture to remain in the gaps and fissures. For some epiphytes, however, bark quality is unimportant as long as humus, or organic detritus, accumulates.