EVERYDAY SCIENCE

Detailed explanation-1: -Velamen is a spongy, multiple epidermis that covers the roots of some epiphytic or semi-epiphytic plants, such as orchid and Clivia species. Velamen is found in the aerial roots. They are composed of abiotic compact cells with lignified strips of secondary walls and are covered with hygroscopic tissue.

Detailed explanation-2: -Hence, Velamen is a tissue that is found in the aerial roots of some orchids/vanda.

Detailed explanation-3: -Absorption of water from air velamen is epidermis that covers the roots of epiphytic plants such as orchids. It is capable of absorbing water (In the form of moisture) from the air.

Detailed explanation-4: -The correct option is D Velamen found in epiphytic roots in meant for.

Detailed explanation-5: -Epiphytic roots develop from the stem and freely hang in the air, they are provided with an outer covering known as velamen by means of which moisture from the atmosphere is absorbed.