Kinds of ovules, Biology

Kinds of Ovules

Ovules undergo varied degrees of curvature during development. The position of micropyle with respect to the funiculus becomes different and constitutes the basis of classification of the ovules. Five basic types of ovules are known. These are: anatropous, orthotropous, hemi anatropous, campylotropous and amphitropous.

752_Kinds of Ovules.png

Figure: Types of ovules. a) Anatropous; b) orthotropous, c) hemi anatropous, d) campylotropous, e) amphitropous. The abbreviations used in the figure are: m-micropyle; ii-inner integument; oi-outer integument; n-nucellus; es-embryo sac; and f-funiculus.

Posted Date: 1/23/2013 1:04:55 AM | Location : United States







Related Discussions:- Kinds of ovules, Assignment Help, Ask Question on Kinds of ovules, Get Answer, Expert's Help, Kinds of ovules Discussions

Write discussion on Kinds of ovules
Your posts are moderated
Related Questions
Phenylketonuria is a severe form of mental disability caused by a homozygous recessive allele. The condition affects about 1 in 10,000 neborn Caucasians. Estimate the frequency of

Root - Plant Water Relation Root system is directly related to the absorption of water and its growth under field conditions is very much influenced by soil. In dry land agric

Under conditions when a cell only needs to use the nonoxidative portion of the Pentose Phosphate pathway to synthesize ribose-5-phosphate, the elevated levels of NADPH in the cell

Your client has the flu and reports 5-6 loose stools a day. He has experienced an isotonic fluid volume loss. Explain what an isotonic fluid loss means.

Cutaneous respiration in earthworm. The respiration performed by the skin is called cutaneous respiration  In earthworm skin is the only organ of respiration. The skin

Eye Drops Medication is instilled in the form of drops or ointment.   Purpose To dilate pupil e.g. Atropine 1 per cent, drosyn 5 per cent or 10 per cent  To c

What are some diseases characterized by progressive loss of the axonal myelin sheath? Multiple sclerosis is a severe disease caused by progressive destruction of the myelin she

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

Q. What are the Symptoms of Mitral stenosis? The cardinal symptom of mitral stenosis is dyspnoea on exertion. Typically it progresses over a period of years. As the severity in

What are the chemical elements that form most of living biological matter? The elements are:- a)  oxygen (O), b)  carbon (C), c)  hydrogen (H) and d) Nitrogen (N).