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

Explain the process of determination of vitamin C, Determination of vitamin...

Determination of vitamin c Majority of chemical methods of determination is based on the rapid oxidation of ascorbic acid and therefore not too highly specific. Titration of

Ross operation-surgical techniques, Ross Operation :  In this technic...

Ross Operation :  In this technically demanding operation, the aortic valve is replaced by patient's own pulmonary valve (autograft) and a pulmonary or aortic allograft (homo

Cellular evaluation of blood test, Cellular evaluation of blood test  F...

Cellular evaluation of blood test  Full blood count (or "complete blood count")  Hematocrit or packed cell volume (PCV) - This is the fraction of whole blood volume that con

Wind energy and its advantages and disadvantages, Wind energy         ...

Wind energy            Wind power is one of most cheapest renewable energy sources today. Wind turbines convert the power of wind into electrical energy. Wind occurs due to t

Bacteria - type of microorganisms, Q. Bacteria - type of microorganisms? ...

Q. Bacteria - type of microorganisms? Many of us know bacteria only as "germs," invisible to naked eyes that can invade our bodies and make us sick. Few know that many bacteria

Haemoglobin, Haemoglobin Among the respiratory pigments we shall consi...

Haemoglobin Among the respiratory pigments we shall consider haemoglobin in some detail as this is the most familiar, widespread as well as the most efficient respiratory pigm

What is the plasma membrane of the cell, Q. What is the plasma membrane of ...

Q. What is the plasma membrane of the cell? What are its major functions? The plasma membrane is the external membrane of the cell, it delimits the cell itself and a cell inter

Bacterial diseases-black disease, Black disease It is a fatal peracute...

Black disease It is a fatal peracute disease caused by Clostridium novyi Type B. It is associated with liver damage caused by liver fluke. The onset of the disease is rapid fo

Is the ventricle lumen larger during diastole, Q. Is the ventricle lumen la...

Q. Is the ventricle lumen larger during diastole or during systole? During diastole the opposite occurs. The muscle fibers of the ventricles relax and the lumen of these chambe

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