Introduction to tissues

Which of the following is not a characteristic of meristematic tissue?

• Lack of vacuoles
• Thin cell wall

• Presence of chloroplasts
• No stored material

Which of the following type of meristematic tissue is responsible for the increase in the distance between two nodes

• Intercalary meristem
• Vascular cambium
• Lateral meristem
• Apical meristem

Removal of which of the following meristem will help in increase in width of the plant?

• root meristem
• intercalary meristem
• apical meristem
• lateral meristem

Collenchyma does not have

• Vacuole

• Even cell wall

• Nucleus

• All of the above

The thickening of the cell wall in sclerenchyma is majorly due to the deposition of

• lignin
• pectin
• hemicellulose
• cellulose

What is aerenchyma?

• Aerenchyma is a type of collenchyma that has intercellular spaces filled with air

• Aerenchyma is a type of parenchyma that contains air spaces.

• Aerenchyma is a type of sclerenchyma that contains air spaces.

• Aerenchyma is a type of plant tissue that remains exposed to air

Secondary meristem helps in the formation of

• bark and cork

• primary vascular bundle

• leaf and branches

• epidermis

Which of the following is a correct difference between xylem and phloem?

• Xylem transports water and minerals, while phloem transports sugars.
• Xylem has 3 living components and 2 dead components. Phloem has 1 dead component and 3 living component

• Xylem and phloem help in unidirectional flow of substances

• Xylem transports sugars, while phloem transports water and minerals.

Which cell controls the activities of the sieve tube cell?

• companion cell
• guard cell
• phloem cell
• xylem cell