Here anthers matures before stigma.

Morphologically, the white edible mass is endosperm in maize.

These are found one on either side of the egg in the egg apparatus. They guide the way to sperms.

Fruit formed is siliqua in brassica or mustard (angiosperm).

Tapetal cells are multinucleate as these contain multiple nuclei in them.

Secondary nucleus is also called definitive nucleus.

Coleoptile is the pointed protective sheath covering the emerging shoot in monocotyledons such as grass. It is also called plumule sheath.

Plerome gives rise to stele and endodermis of a plant.

The term anomalous growth reflects a growth condition which is not commonly seen and which is present in a limited number of families or genera, e.g. dracena. Their later growth pattern is termed as diffuse secondary growth and consists mostly of a proliferation of ground parenchyma cells and additional vascular bundles near the periphery.

Sieve tubes are the specialised cells of phloem.

It is the study of flowers.

Colchicine can change a plant to homozygous diploid form.

If the seed has a large amount of endosperm as a result of its larger synthesis or less utilisation until the seed germinates, it is called endospermic or albuminous seed.

Schmidt in 1924 proposed this theory for the organisation of shoot apex. According to this theory, the shoot apex can be differentiated into two regions of unlike structure and appearance, a central core, the corpus with large cells dividing irregularly to result in volume growth. It is surrounded by an outer enveloping layer called the tunica.

It is the right answer because the pollination by slugs and snail is malacophily.