Non-succulent perennials, Biology

Assignment Help:

Non-succulent perennials

These are actually the true xerophytes or drought resistants, because they possess a number of morphological, anatomical and physiological characteristics which enable them to withstand critical dry conditions. They exhibit rapid root growth and form an extensive root system to tap water from the soil in a most efficient manner. The leaf size is greatly reduced and in many xerophytic grasses, leaves roll on to reduce the leaf surface for restricting loss of water due to transpiration. Some of the examples are Calotropis procera, Acacia nelotica, Saccharurn munja In non-succulent xerophytes, root system is very extensive e.g. Calotropis. Important adaptations to minirnise the loss of water through transpiration are:

  • thick waxy coating on leaves.
  • thick cuticular and epidermal layers.
  • leaves small, sometimes scaly or survive for a short period only.
  • leaves modified into spines or in exueme cases stem devoid of leaves.
  • dying back of leaves is a common phenomenon in many grasses.
  • rolling and folding of leaves as seen in many grasses.

Related Discussions:- Non-succulent perennials

Zoology, How does classifying animals based on similarities and traits help...

How does classifying animals based on similarities and traits help future scientists

What is taxonomic diversity, Q. What is Taxonomic diversity? Taxonomic ...

Q. What is Taxonomic diversity? Taxonomic diversity is relative abundance of a species as well as the ancestor descendant relationships of species to each other. For example, a

Variations on translation, Which of the following variations on translation...

Which of the following variations on translation would be most disadvantageous for a cell? A) translating polypeptides directly from DNA B) using fewer kinds of tRNA C) having only

Describe mitochondria and explain why it would happen, Describe what would ...

Describe what would happen if people lost all of their mitochondria and explain why it would happen.

Explain the ecological niche modelling, Explain the Ecological niche modell...

Explain the Ecological niche modelling? The geographic range of organisms frequently reflects their fundamental niche, the range of physical conditions where they can live. Qua

Endothermic and exothermic reactions, List out the endothermic and exotherm...

List out the endothermic and exothermic reactions taking place in our body

Show the symptoms and treatments of hepatitis b, Q. What are the modes of t...

Q. What are the modes of transmission, main signs and symptoms and treatments of hepatitis B? The Hepatitis B is a disease caused by a DNA virus. The transmission is by blood (

Define about the iron deficiency anaemia (ida), Define about the Iron Defic...

Define about the Iron Deficiency Anaemia (IDA)? Iron deficiency anaemia (IDA) is the most common micronutrient deficiency in the world, particularly in the developing countries

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd