Explanation

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

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

Explanation

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

Gibberellins are plant hormones that promote cell elongation, especially in internodal regions.

Explanation

Natural resistance refers to an organism's inherent ability to resist diseases or pests due to genetic factors.

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