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
Define lipids 'lipids' defines substances as oils, fats and waxes which can be only characterized by a large array of properties.  They are in general: -  coming from plant

Freeze Fracture Electron Microscopy Freeze fracture electron microscopy i a technique lo reveal the surface features of hydrophobic interior of cell membrane. In this technique,

Describe five different types of gateway vectors that are available, what different functions they can perform, and for what purpose. e.g.  (1) Vector pXXX, (2) function - expre

Principles of Isolated soybean proteins The basic principles of ISP production are simple. Soybean protein isolates are obtained by selective solubilisation of  the protein (e.

You have a neuron with a resting potential of -55 mV, EK of -70 mV, and ENa of 50 mV. You decide to voltage clamp the neuron. Now, draw the membrane current over time. What will th

Sympatric OR allopatric speciation Sympatry The development of new species within a population. Two Hebe sp living in the same location but with different chromosomal numb

Posaconazole  Posaconazole (SCH 56592), an unapproved azole available from the manufacturer for compassionate use, isunder review by the FDA for oral treatment of invasive fung

Jennifer has the "stomach flu" that is going around campus and has been vomiting profusely for the past 24 hours. Not only has she been unable to keep down fluids or food but she h

Describe the structure of the intestines. How are they modified to carryout their functions? How does the human intestine compare to the fetal pig?

Blastula is the ball of cells surrounding a fluid-filled cavity (known as blastocoel) which is produced by the cleavage of a zygote.