Explain protoderm in primary growth in shoot, Biology

Explain Protoderm in primary growth in shoot?

The protoderm is one of the so-called "primary tissues" because it is formed first during germination and subsequent bud growth and development. The protoderm produces new cells on the surface of the apical meristem, and these surface cells migrate downward and mature into the epidermis of the shoot and leaves.

The epidermal layer provides physical protection for the other internal tissues, and most importantly, guards against drying out. The epidermis produces an outer waxy coating from a substance known as cutin. This cuticle layer prevents evaporative water loss. However, leaves need carbon dioxide and they need to get rid of oxygen, so they provide openings for this gas exchange through special cells called guard cells. Two guard cells make up a functional unit, whose scientific name is stomata, or stomate.

Posted Date: 4/30/2013 2:45:48 AM | Location : United States







Related Discussions:- Explain protoderm in primary growth in shoot, Assignment Help, Ask Question on Explain protoderm in primary growth in shoot, Get Answer, Expert's Help, Explain protoderm in primary growth in shoot Discussions

Write discussion on Explain protoderm in primary growth in shoot
Your posts are moderated
Related Questions
Anaphase This  phase is of shortest duration. It  begins  with  a sudden  separation  of the two chromatids of each   due  to splitting   of its centromere and  then a slow mov

Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4

Q. What are the complications of chronic dyspepsia? Complications of dyspepsia are listed below: • Wright loss: Since eating most of tell provokes the symptoms, patients res

Sulphur and Boron Boron is extracted with hot water. Sulphur is extracted with 500 ppm solution of P solution (prepared from potassium dihydrogen orthophosphate or monocalcium

Classification according to the modes of transmission 1.  Direct zoonoses: The direct zoonoses are those zoonoses that are transmitted from an infected vertebrate host to a

Osmoregulation in Freshwater Metazoans Freshwater and brackish water animals that are live in hypoosmotic(of lower osmotic pressure) environment and keep a hyperosmotic (of h

Select the two correct statements out of the four (a - d) given below about lac operon. 1. Glucose or galactose may bind with the repressor and inactivate it 2. In the absenc

which symbiotic protozoa present in digestive tract of termites?

Classification of Enzymes : Enzymes are classified  into the following six main categories in according with  the nature of reaction the catalyze: 1.      Oxidoreductases

Which is the kind of gamete (for a given trait) produced by a dominant homozygous individual? What is genotypical proportion of these gametes? And what about the recessive homozygo