The central vacuole of the plant cell does not excrete unwanted materials.

The middle lamella is rich in pectin. It is the outermost layer and joins together adjacent plant cells and holds them together.

Sperms of conifers lack flagella. They are non-flagellated.

Phragmoplast is formed during late cytokineses and serves as a scaffold for cell plate assembly and subsequent formation of a new cell wall separating the two daughter cells.

In plant cells, the synthesis of palmitic acid takes place in leucoplasts.

Gerontoplasts are involved in dismantling of the photosynthetic apparatus during senescence.

Besides photosynthesis, plastids also function in synthesising fatty acids and terpenes.

In moss sporophyte, leptomes perform the function of phloem. They conduct food material.

Brefeldin A is used to test Golgi function. It blocks the activation of some ADP-ribosylation factors (ARFs) which regulate vesicular trafficking through the binding of COPs to the Golgi. Thus, treatment with Brefeldin A disrupts the secretion pathway.

Sieve tube elements lack nuclei and ribosomes.

Apoplast is the space outside the plasma membrane, within which material can diffuse freely. The apoplast facilitates the transport of water and solutes across cells.

Parenchyma cells specialise in nectar secretion.

Chlamydomonas reinhardtii bears a single prominent pyrenoid.

The space resulting from separation of cell walls from each other, as the cells grow older by partial dissolution of inter-cellular substance, is called schizogenous intercellular space.

This is false. Sclereids have variable shapes. The cells can be isodiametric, prosenchymatic, forked or elaborately branched.