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!
Nucellus - Ovule
Enclosed within the integuments lies a homogenous mass of tissue which is termed as the nucellus. This is the tissue in which the female gametophyte differentiates and develops. At an early stage of ovule development, usually an archesporial cell or a group of cells differentiate in the hypodermal region of the nucellus. The archesporial cell may function directly as the sporogenous cell. In such situations, the sporogenous cell also remains hypodermal in position and is surrounded by a single-layer of nucellus, in the micropylar region. Such ovules are known as tenuinucellate. These are commonly seen in Sympetalae.
Figure: Tenuinucellate ovule of Elytraria acaulis. In c and d integuments are not shown.
(a) Find the electric potential, taking zero at infinity, at the upper right corner (the corner without a charge) of the rectangle in the figure. (Let y = 3.7 cm and x = 6.7 cm.)
Three ways in which food might become contaminated by harmful bacteria. Food may become contaminated:- (i) from the unwashed hands of a food-handler, (ii) by house- flies
Q. What is biotic potential? The Biotic potential is the capability of growth of a given population under hypothetical optimum conditions, i.e., in an environment without limit
Explain the Primary Root Growth? Primary Growth in Roots : Roots grow down and through the soil by adding new cells at the tip of the root (called the root tip). There is a
figure of contractile vacuole of amoeba
Which type of genetic disease can be identified from the visual analysis of the number of chromosomes present in a karyotype? The counting and the identification of chromosomes
How Sedentary or light activity lifestyles affects Physical Activity? These people have occupations that do not demand much physical effort, we not required to walk long distan
comparison between takhtajans and natural classification
Explain the carrying capacity in ecology? Carrying Capacity : We have seen that natural populations do not normally achieve the maximum intrinsic rate of natural increase, o
Various cases are now known where variant tissues splice the main RNA transcript of a single gene by instead pathways, where the exons which are lost and those which are
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