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Asked by Sagar Rachchh

Jan 25, 2015

What is microsporangium? With the help of a diagram, represent the location of a microsporangium.

Answer.

Microsporangium is the sporangial structure which contains microspores which are the pollen sacs giving rise to male gametes in an angiosperm.
T.S of anther shows the four lobes fo...

Answer (2)

Asked by Sai

May 14, 2014

What is microsporogenesis? Where does it occur in angiosperms?

Answer.

Formation of haploid microspore by reductional division (meiosis) in diploid spore mother cell is called microsporogenesis. The process of microsporogenesis tak...

Answer (11)

Asked by Sai

May 13, 2014

Why the pollengrains well preserved as fossils?

Answer.

    Pollen grains has a prominent two-layered wall. The hard outer layer called the exine is made up of sporopollenin which is one of the most re...

Answer (2)

Asked by Adithyan Sanal

May 6, 2015

State what is apomixis comment on its significance. 

Answer.

Apomixis is the method involved in production of seeds without fertilisation.Apomixis has an advantage of producing inividuals with desired qualities in more numbers.

Apomi...

Answer (3)

Asked by Adithyan Sanal

May 6, 2015

A liverwort plant is unable to complete its life cycle in a dry environment. State two reasons. 

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Answer (2)

Asked by Sunny Mathew

Apr 17, 2015

Differentiate between a dicot embryo and a monocot embryo.

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Answer (2)

Asked by Sagar Rachchh

Feb 2, 2015

How are pollen grains formed in sporogenous tissue?

Sol:

Microsporangium is the sporangial structure which contains microspores which are the pollen sacs giving rise to male gametes in an angiosperm.
T.S of anther shows the four lobes formi...

Answer (1)

Asked by Sanalkumar S

Jun 17, 2015

Explain why endosperm in angiosperms is triploid while zygote formed is diploid.

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Answer (2)

Asked by Sunil kumar Mishra

Jun 7, 2015

What are bisexual plants?

Sol:
Flowers based on the reproductive whorls they carry, can be classified into unisexual flowers and bisexual flowers. 
A bisexual flower is the flower which consists both the whorls of sta...

Answer (1)

Asked by Sai

May 14, 2014

What is triple fusion? Where and how does it take place?

Answer.
    Triple fusion refers to the process by which male nucleus fuses with the two polar nulei. It takes place inside the embryo sac of an angiosperm....

Answer (2)

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