In angiosperms , the pollen grain germinates to produce pollen tube that carries two gametes what is the purpose of carrying two gametes when single gamete can fertilize the egg ?

In Angiosperm pollen tube liberate their male gametes into the …........

Fertilization in angiosperms is called as "double fertilization" because here two male gametes take part in fertilization . (a). Which cells do these male gamete fertilize? (b) What are the products of fertilization ? ( c) Explain the ploidy of the two products .

Fusion of two haploid gametes to produce a diploid zygote is called

A plant has the genotype L1 Mm Nn. What type of hybrid is it? How many gametes can it produce? What are they?

Assertion : The generative cell of the pollen produces two sperms. Reason : Only one sperm fertilizes the egg.

If one pollen grain produces two male gametes, how many pollen grains are needed to fertilize 10 ovules?

IF one pollen grain produces two male gametes how many pollen grains are needed to fertillize 10 Ovules?

(a) Draw a longitudinal sectional view of typical anatropous ovule to show the site where double fertilization takes place . Label any four major parts of the ovule . (b) How do the male gametes that are present in the pollen grains reach the site mentioned by you in part (a) to cause double fertilization ?

Which of the following characters are not suitable to angiosperm? a) Reticulate / parallel venation, closed seeded plants, sieve tubes are present in phloem. b) Seeds are open, ovary is not present, gametes are produced in cones. c) Tracheids are the conducting cells, companion cells not are present in phloem. d) Trimerous or tetramerous, closed seed, seed with seed coat, bears fruit.