MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

There are no items in this cart.
Continue Shopping
Menu
Grade: 12

                        

Desert can be converted into a lush green land by planting: (a) terrestrial plant (b) xerophytic plant (c) halophytes (d) psammophytes Please explain the solution in detail.

5 years ago

Answers : (2)

Komal
askIITians Faculty
747 Points
							Psammophytes
a plant that thrives in shifting sands, primarily in deserts. Psammophytes are marked by a number of adaptations that enable them to exist on wind-blown sands. In such an environment, the plants are often covered with sand, or their root system is exposed. It is also difficult for the seeds to germinate. Psammophytic trees and shrubs form strong adventitious roots on those parts of their trunks buried in the sand (Haloxylon persicum, Calligonum); adventitious buds and, then, shoots arise on the exposed roots (Ammondendron, Eremosparton, Smirnowia). Herbaceous psammophytes form underground shoots (Aristida) on long, fast-growing rhizomes that sprout through the sand (Carex areharia).
Many psammophytes are xerophytes and annual ephemerals. Perennial psammophytes have small, very reduced leaves or no leaves at all; photosynthesis and transpiration are accomplished by the stem (Haloxylon, Calligonum). The fruits have appendages in the shape of wings (Haloxylon), propellors (Ammondendron) or parachutes (Aristida) that enable them to move with the sand and to remain on the sand’s surface. After seed germination (usually in early spring), the roots grow very quickly, soon reaching a depth of approximately 0.5 m. At this depth, the sand remains moist until the onset of summer.
Psammophytes are encountered not only in deserts but also along seas and large lakes and in sands along rivers (Elymus giganteus, sand fescue, sharp-leaved willow). Psammophytes are often used to stabilize sandy soils.
5 years ago
shubham sharda
361 Points
							
Psammophytes would be the answer.
 
5 years ago
Think You Can Provide A Better Answer ?
Answer & Earn Cool Goodies


Course Features

  • 728 Video Lectures
  • Revision Notes
  • Previous Year Papers
  • Mind Map
  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Test paper with Video Solution


Course Features

  • 46 Video Lectures
  • Revision Notes
  • Test paper with Video Solution
  • Mind Map
  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Previous Year Exam Questions


Ask Experts

Have any Question? Ask Experts

Post Question

 
 
Answer ‘n’ Earn
Attractive Gift
Vouchers
To Win!!! Click Here for details