Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Types of Ovules
Anatropous
This is the most common type of ovule in angiosperms in which the ovule undergoes curvature such that the micropylar end comes to lie parallel to the funiculus.
Orthotropous
In this type of ovule no curvature occurs and the micropyle lies in a straight line with respect to the funiculus.
Hemi anatropous
The hemi anatropous condition results from the curvature of the ovule such that the micropyle comes to lie at right angles to the funiculus.
Campylotropous
In campylotropous type, the ovule is curved but the curvature is less than that in the anatropous condition.
Amphitropous
The amphitropous ovule looks like the campylotropous ovule at the first glance. But there is a point of distinction. In this type the nucellus and the embryo sac are curved like a horse shoe.
Circinotropous
Besides the above basic forms, another interesting type that you should know is the circinotropous ovule. In the early developmental stages of such ovules the .nucellar protuberance is more or less in line with the axis. In the further developmental stages, due to unilateral growth, it assumes anatropous form. The curvature does not stop at this, but continues until the ovule has turned over completely so that the micropylar end again points upwards. This kind of ovule is common in families Cactaceae and Plumbaginaceae.
Organogenesis - Plant Tissue and Organ Culture Organogenesis refers to the differentiation of organs such as roots, shoots or flowers. Shoot bud differentiation may occur dire
The luria-nebraska neuropsychological battery This procedure was first reported in 1978 in the form of two initial validity studies. Historically, Chirstensen, a student of the
What is Gymnosperms explain its dividions? Gymnosperms are one of the two major groups of plants that bear seeds. The other group, the Angiosperms (flowering plants), differ in
The dietary principles underlying the enteric diet include: High calorie High protein High carbohydrate Moderate fat High fluid Low fibre and soft diet
Antibody Structure: An antibody molecule consist of two alike light chains ( 220 amino acids each) ad two similar heavy chains (about 440-450 amino acids each) held together
How the brain influences or controls immune system Scientists are still working to determine to what degree, and how, the brain influences or controls immune system functions,
What is Anatomic concavities Anatomic concavities present in the lingual surface of the mandible, the sublingual fossa anteriorly and the submandibular fossa posteriorly. Norm
You have to do counselling of a diabetic patient and the family members when you are working in a diabetic clinic or community setting in health center. To be an effective counsell
Why is not Mendel's second law always valid for two or more phenotypical traits of an individual? The Mendel's second law, or the law of the independent assortment, is valid fo
1. Using specific examples describe how variations in DNA sequence between individuals can lead to risk of disease. Describe how a range of techniques have been adapted to detect s
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!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd