Apomixis, Biology

Assignment Help:

Apomixis

The formation of sporophyte from the gametophyte without sexual process signifies apomixis. It relates to the replacement of alternation of a reduced gametophyte and an unreduced sporophyte by an unreduced gametophyte and sporophyte. It occurs in relatively in about 35 families. The most common being Asteraceae and Poaceae. Apomixis can be classified into two types, recurrent (in non- reduced embryo sacs) and non-recurrent (in reduced embryo sacs). The later relates to development of haploid embryos without the actual fusion of gametes.

275_Apomixis.png

Figure: Diagrammatic representation of Apomixis types


Related Discussions:- Apomixis

What is meant by unsaturation or saturation of oils and fats, Q. What is me...

Q. What is meant by unsaturation or saturation of oils and fats? When it is said that a triglyceride is saturated it means that in its molecule the carbon chain is bound in its

Xerarch - ecology, Xerarch - Ecology Successions initiated on bare roc...

Xerarch - Ecology Successions initiated on bare rock, wind-blown sand, rocky talus slopes, or other situations where there is an extreme deficiency of water are termed xerarch

Show non-modifiable risk factors for cardiovascular disease, Q. Show Non-Mo...

Q. Show Non-Modifiable Risk Factors for cardiovascular disease? Age: Earlier men less than 55 years were more prone but now heart disease has caught up with a younger age-gro

What are the benefits of migration, What are the Benefits of migration ...

What are the Benefits of migration Eg: Need to leave Alaska due to harsh weather conditions (statement that birds are escaping NZ winter not acceptable). Longer day

Define the parathyroid gland cells, Which of the following serves as a sens...

Which of the following serves as a sensor, or as part of a sensor, that functions in a negative feedback system? A. CaSRs (Calcium-Sensing Receptors) located in the plasma memb

What are the most important structures in the nucleus, Q. What are the most...

Q. What are the most important structures within the cell nucleus? Within the cell nucleus the most important structures are the nucleolus, an optically dense region, spherical

Define proteins as enzymes, Define Proteins as Enzymes? From conception...

Define Proteins as Enzymes? From conception to death, living cells use oxygen and metabolize fuel. Cells synthesize new products, degrade others, and generally are in a state o

Define procedure for detection of number of bacteria in milk, Define Proced...

Define Procedure for Detection of Number of Bacteria in Milk? 1. Place a clean, non-greasy slide over the graph paper. 2. Spread 0.01 ml of the milk over an area of 1 cm2 as

What the enzymes do to reaction, What do enzymes do to a reaction? Indicate...

What do enzymes do to a reaction? Indicate all that are correct. a. Lower the activation energy b. Reverse the equilibrium c. Lower the equilibrium d. Increase the reac

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