Sexual Reproduction in Flowering Plants

The process of removal of anther from the flower bud before it dehisces is called as

Which of the following is not always present in monocotyledonous seeds?

Assertion : Parthenocarpy involves formation of seedless fruits. Reason : Apomixis occurs without fertilisation.

A flower represents a complex array of functionally specialised structures that differ substantially from vegetative plant body in form and cell types. Select the statement that is not true with regard to floral…

Assertion : Colpa aurea is a specialised pollinating agent of orchid Ophrys speculum. Reason : Male Colpa mistakes the Ophrys flower for female wasp to copulate with it.

Ploidy of endothecium, microspore mother cell, tapetum and microspore is respectively,

After double fertilisation, a mature ovule has

Assertion : Endothecium layer of anther wall plays an important role in dehiscence of anther. Reason : The presence of fibrous bands and differential expansion of inner and outer tangential walls of endothecial cells…

The number of chromosomes present in the cells of the bread wheat, Triticum aestivum suggests that it is

Identify the parts labelled A, B, C and $\mathrm{D}$ in the given figure and select the correct option.

Primary endosperm nucleus (PEN) is formed by the fusion of

How many haploid nuclei are present in a mature pollen grain?