Tag: phanerogams

Trimerous flowers are those that have floral parts in the count of three. These flowers are characteristic features of monocots. 

The grasses, used in the making of lawns are called Rolling grass or Lawn grass. Agropyron, Ammophila, Poa are used in making lawns. So they are called Rolling grass.

So, the correct option is ‘All of the above’.

A. True - In Angiosperms, the root tip is covered by a protective layer called Root cap or Calyptra, to provide protection.

Yucca is a monocot and a member of Liliaceae, shows anamolous secondary growth.

So, the correct answer is ‘Yucca’.

Greatest extent of adaptation to various environments is found in angiosperms. Angiosperms grow on most of the places on earth. They grow in hot and cold deserts. They also grow in high altitude of Himalayas.

Rattan belongs to the palm family (Arecales or Palmea) and is found from sea level up to 3,000 m. Around 600 species and 13 genera of rattan are known. Although most rattan species are native to the tropical regions of Africa, Asia, and Australia, there is a large variety in their distribution.  Commercially-used rattan usually grows in hilly tropical areas, with a mean annual temperature of 25° C and an annual rainfall of -2,000 mm. As a result, the main area for rattan production is in the tropical regions of South and Southeast Asia. There are different types of rattan palms, such as high or low climbers, single stemmed or clustered rattan species. Some have very short and underground stems. Several rattan species are known to reach lengths of 100m. Rattan sheaths have spines for protection, along with ‘whips’ that are also covered with spines. These play a major role in supporting the rattan as it grows over trees and other plants in the rainforest. 

Vessels are one of the type of water conducting tissue. These cells are long, cylindrical, dead cells. Vessels are absent in pteridophytes. These cells are present in all angiosperms and some gymnosperms.