Seed formation, Biology

Assignment Help:

Seed Formation

A mature seed has seed coat, an embryo and reserve food material in the endosperm in monocots and in cotyledons in the dicots. Figure shows structure of dicots and monocot seeds. The embryo as shown is already well-developed and is differentiated into embryonic root (radicle) and shoot (plumule). You know that the process of seed formation begins with the fusion of a male gamete with an egg cell. The 'zygote' thus formed undergoes divisions resulting in the development of an embryo. At this stage the development is stopped and there is cessation of metabolic activity which resumes only after the seeds get dispersed from the parent plant and start germination.

2333_Seed Formation.png

Figure:  Seed structure and seedlings of 3 different angiosperms. The food is stored in cotyledons (bean, dicot), endosperm (maize, a monocot, castor bean, a dicot)


Related Discussions:- Seed formation

Standard mrna and fibroblasts, You have discovered a novel alternatively sp...

You have discovered a novel alternatively spliced gene (gene X) and you wish to study its regulation in an in vitro splicing assay.  The alternatively spliced product retains intro

Explain cephalosporin, Explain cephalosporin Third-generation cephalosp...

Explain cephalosporin Third-generation cephalosporins, like cefotaxime  (Claforan), ceftriaxone  (Rocephin), cefoperazone  (Cefobid), ceftazidime (Fortaz, and others), or cefti

Chromosome, Apparently. The untwisting, unzipping. Rezipping and retwisting...

Apparently. The untwisting, unzipping. Rezipping and retwisting occur sequentially and ensure that each newly formed double helix is exactly like other one. The final result is a p

Explain the drug effects on absorption of nutrients, Explain the Drug Effec...

Explain the Drug Effects on Absorption of Nutrients? Many drugs can impair, prevent or reduce absorption of nutrients due to: Formation of insoluble complexes: many drugs

Habitat conservation - conservation of wildlife, Habitat Conservation - Con...

Habitat Conservation - Conservation of Wildlife Actually conservation means different things to different people. In the present context, conservation refers to the preservati

What is a plant-incorporated protectant, What is a plant-incorporated prote...

What is a plant-incorporated protectant? Plant-incorporated protectants are pesticidal substances formed and used by the living plant, typically to protect the plant from pests

What are the main risk factors for hypertension, Q. What are the main risk ...

Q. What are the main risk factors for hypertension? The major risks factors for hypertension are tobacco smoking, stress, obesity, sedentary lifestyle and alcoholism.

Requirements of various nutrients in constipation, Q. Requirements of vario...

Q. Requirements of various nutrients in constipation? The requirements of various nutrients are not altered in constipation. It is essentially a normal balanced diet (normal RD

Calorie requirements for ulcerative colitis, Q. Calorie requirements for ul...

Q. Calorie requirements for ulcerative colitis? Energy: The calorie requirements must be increased to: 1) Restore weight status and maintain ideal weight. 2) Compensate f

Qualitative test for specific sugars, what is another test for pentoses? wh...

what is another test for pentoses? what is the positive result for this test?

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