Explanation

Robert Brown discovered the nucleus in plant cells.

It was first described by Franz Bauer in 1804 and in more detail in 1831 by Scottish botanist Robert Brown.

Explanation

Pneumatophores are specialized aerial roots found in mangrove species.

In some species, these roots are pencil-sized and peg whereas in some other species, they look like a knee.

These roots have numerous pores through which oxygen enters the underground tissues

Explanation

Inflorescence: raceme-like. Flower: calyx 2--3 mm; corolla 10 mm wide,

white, lobes deep; anthers 1.4--2.2 mm; style 3--5 mm. Fruit: 6--8 mm, black. Seed: 1.5--2.5 mm.

Explanation

The "eyes" on potato tubers are nodes where buds can develop into new shoots.

Explanation

Plants in the Solanaceae family have an obligately superior ovary.

In the Solanaceae family, the ovary is oblique in position due to the tilting of posterior carpels to the right and anterior carpels to the left at an angle of 45 degrees.

The ovary is superior, bilocular with many ovules on swollen axile placentation.

Explanation

The Solanaceae family (e.g., tomatoes, peppers) typically produces berries.

Explanation

Sieve tubes and companion cells are absent in the phloem of pteridophytes.

Explanation

Pteridophytes are the first terrestrial plants to possess vascular tissue.

A pteridophyte is a vascular plant (with xylem and phloem) that reproduces by means of spores.

Because pteridophytes produce neither flowers nor seeds,

They are sometimes referred to as "cryptogams", meaning that their means of reproduction is hidden.

Explanation

Soil salinity is measured using a conductivity meter, which assesses the electrical conductivity of the soil.

Explanation

In gymnosperms, the ovule is covered by an integument, which is a protective layer.