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

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

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

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

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

Explanation

During phase 1 of this cycle, the CO2 molecule is incorporated into one of two 3-phosphoglycerate molecules (3-PGA).

This process requires the enzyme RuBisCO and both ATP and NADPH.

Once 3-PGA is formed, one of two molecules formed continues into the reduction phase (phase 2).

Explanation

 Imbibation is the absorption of water by materials, leading to swelling, such as in door wood during the rainy season.

Explanation

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

Explanation

Hatch and Slack Pathway In C4 Plants.

To fix carbon dioxide, this pathway is the alternate to the C3 cycle.

The first formed stable compound – oxaloacetic acid is a 4 carbon compound,hence the name C4 cycle.

This pathway is a common sight in several grasses, maize, sugarcane, amaranthus, sorghum.

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.