Botany and Plant Science

In hydrophytes, large air cavities are present in parenchyma to give buoyancy to the plants. Such type of parenchyma is called arenchyma. 

Lignin is the correct answer as lignin is a complex polymer which acts as cement and hardens the cell wall. It is present in the walls of cells of sclerenchyma tissue. Such cell walls are called lignified.

Sieve tube is not an element of xylem. It is an element of phloem. Sieve tube is a tubular cell with perforated walls.

Sclerenchyma tissue is responsible for making a plant hard and stiff. 

Esters are organic compounds responsible for the sweet and fruity fragrances found in many flowers and fruits. They are widely used in the perfume industry to replicate natural scents. Other options like Amber are specific scents or substances, not the general class of chemicals responsible for floral smells.

Stamen – is the male reproductive part of the flower.

This is the correct answer. Grass has parallel venation and fibrous root.

These are the male parts of the flower.

Some flowers lack pedicel, or a stem, such flowers are called sessile.

Anthers and filaments – are the male reproductive parts of the flower. These are the two parts of the stamen.

Anthers – Pollen grains are produced in the anthers of the flowers.

Pedicel – is the stem of the flower and is not considered a whorl. Thus, this is the correct answer.

Musk melon – This is the correct answer. Musk melon is a uni-sexual flower. Uni-sexual flowers are flowers that have either male or female reproductive parts.

Rose – This is correct as this is a bisexual flower. Flowers that contain both androecium and gynoecium are called androgynous or hermaphroditic. Mostly plants with large showy flowers are bisexual flowers.

This is the correct answer. All the statements are correct. Sugarcane plant has fibrous roots. The shoot system develops from the plumule of the embryo. The stem is divided into nodes and internodes and it bears axillary buds and apical buds.