Ruminate endosperm - variants of endosperm, Biology

Assignment Help:

Ruminate Endosperm - Variants of Endosperm

In certain plants the surface of the mature cellular endosperm shows a high degree of irregularity and unevenness, giving a ruminated appearance (rumination means as if chewed). It is caused either by the activity of the seed coat or by the endosperm itself. Ruminate endosperm is found in about 32 families of Angiosperms.

On morphological basis, Periasamy (1962) distinguishes seven types: Annona, Passiflora, Myristica Spigelia, Verbascum and Coccoloba and Elytraria. In all these types except Elytraria irregularities occur in the growth of integuments which bring about the rumination of endosperm. In Elytraria during the development of seed, localized regions in the peripheral layers of cellular endosperm show active growth causing rumination.


Related Discussions:- Ruminate endosperm - variants of endosperm

Prevent vitamin a deficiency, Vitamin a deficiency leads to a variety of di...

Vitamin a deficiency leads to a variety of disorders of the eyes and this effects the vision. Some of the disorders due to vitamin A deficiency are given below. 1) Night Blindne

Define cancer - excessive fat intake, Define Cancer - excessive fat intake?...

Define Cancer - excessive fat intake? Role of fat in cancer is debatable. High fat intake is indicated as a risk factor to cancer of breast, colon etc. Saturated fat intake has

Can you define factor viii, Q. What is factor VIII? What is the genetic dis...

Q. What is factor VIII? What is the genetic disease in which this factor is absent? Factor VIII has the function of activating factor X that in its turn is necessary for the tr

Lysosomes, explain polymorphism in lysosomes

explain polymorphism in lysosomes

Types of asexual reproduction, TYPES OF ASEXUAL REPRODUCTION ...

TYPES OF ASEXUAL REPRODUCTION 1 . Binar y fission - Amoeba 2. Multipl e fission -

Explain the functions of consciousness, Q. Explain the Functions of Conscio...

Q. Explain the Functions of Consciousness? Consciousness allows individuals to be aware of his/her surrounding, thereby defining the context and removing ambiguities. Simplific

How do keep respiratory system healthy, How do keep respiratory system heal...

How do keep respiratory system healthy? The circulatory system supplies food and oxygen to the body's cell. It carries away waste production of energy. The wastes must then be

What are the autotrophic beings called, In the ecological study of food int...

In the ecological study of food interactions, what are the autotrophic beings called? In the Ecology autotrophic beings are called as producers because they synthesize the orga

Disorders of upper respiratory tract, DISORDERS OF UPPER RESPIRATORY TRACT:...

DISORDERS OF UPPER RESPIRATORY TRACT: Common Cold: It is most frequent and most common infection in infants  and children. Common cold corresponds  to  acute nasopharyn

Anemophily - cross-pollination, Anemophily - Cross-pollination It ...

Anemophily - Cross-pollination It is also commonly referred to as wind pollination, i.e., the pollen grains are carried through wind currents. To ensure good pollination t

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

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!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd