Anatomy of Flowering Plants
Test 3

Correct answer Carries: 4.

Wrong Answer Carries: -1.

Which simple tissue in plants is responsible for photosynthesis in leaves?

Collenchyma
Sclerenchyma
Parenchyma
Xylem
3

Parenchyma in leaves contains chloroplasts and is called mesophyll, which carries out photosynthesis.

Which of the following statements about sclerenchyma is incorrect?

Sclerenchyma provides mechanical support to plants.
Sclerenchyma cells are dead at maturity.
Sclerenchyma cells have thin cellulose walls.
Sclerenchyma includes fibers and sclereids.
3

Sclerenchyma cells have thick, lignified walls that provide strength and rigidity to plant structures.

What is the main function of phloem in vascular plants?

Transport of water
Transport of organic nutrients
Mechanical support
Prevention of transpiration
2

Phloem transports organic nutrients like sucrose from the leaves to other parts of the plant.

Which of the following statements about casparian strips in endodermis is incorrect?

Casparian strips prevent passive water flow.
Casparian strips regulate water movement into the vascular bundle.
Casparian strips are made up of suberin.
Casparian strips are found in phloem.
4

Casparian strips are found in the endodermis, not in phloem, and they regulate the entry of water and solutes into vascular tissue.

What is the main function of trichomes in the shoot system?

Water absorption
Reduction of water loss
Nutrient storage
Gas exchange
2

Trichomes reduce water loss by minimizing transpiration and can also provide protection.

Which of the following statements about xylem vessels is incorrect?

Xylem vessels are dead at maturity.
Xylem vessels help in the transport of water and minerals.
Xylem vessels are living at maturity.
Xylem vessels have lignified walls.
3

Xylem vessels are dead at maturity and function in conducting water and minerals from roots to other plant parts.

Which part of the root stores starch and other nutrients?

Epidermis
Cortex
Pericycle
Endodermis
2

The cortex of roots is responsible for storing starch and other nutrients.

Which of the following statements about intercalary meristem is incorrect?

Intercalary meristem is found in grasses and bamboo.
Intercalary meristem helps in elongation of internodes.
Intercalary meristem is located at the tip of the root and shoot.
Intercalary meristem is a type of primary meristem.
3

Intercalary meristem is located at the base of leaves and internodes, not at the tips of roots and shoots.

What is the primary function of the pericycle in dicot roots?

Initiation of lateral roots
Absorption of water
Gas exchange
Photosynthesis
1

The pericycle in dicot roots plays a crucial role in the initiation of lateral roots and secondary growth.

Which of the following statements about phloem loading is incorrect?

Phloem loading refers to the movement of sucrose into sieve tube elements.
Phloem loading occurs actively through companion cells.
Phloem loading is dependent on ATP.
Phloem loading occurs primarily through xylem vessels.
4

Phloem loading occurs via sieve tube elements and companion cells, not through xylem vessels.

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