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Double fertilization involves:

Fertilization of the egg by two male gametes.
Fertilization of two eggs in the same embryo sac by two sperms brought by one pollen tube.
Fertilization of the egg and the central cell by two sperms brought by different pollen tubes.
Fertilization of the egg and the central cell by two sperms brought by the same pollen tube
Additional Questions

The first cell of suspensor towards micropyle which absorbs food material is

Answer

Grafting is successful in dicots but not in monocots because the dicots have:

Answer

In which one pair both the plants can be vegetatively propagated by leaf pieces

Answer

Match the following ovular structure with post fertilization structure and select the correct alternative.

A.Ovule1.Endosperm
B.Funiculus2.Aril
C.Nucellus3.Seed
D.Polar nuclei4.Perisperm

Answer

The arrangement of the nuclei in a normal embryo sac in the dicot plants is

Answer

Apomictic embryos in citrus arise from

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Fibrous thickenings of hygroscopic nature are found in this part of the anther wall:

Answer

In a type of apomixis known as adventive embryony, embryos develop directly from the

Answer

In nature, cleistogamous flowers are

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Which one of the following pairs of plant structures has haploid number of chromosomes?

Answer
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