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  4. Anatomy of Flowering Plants Chapter-Wise Test 3

Anatomy of Flowering Plants Chapter-Wise Test 3

Correct answer Carries: 4.

Wrong Answer Carries: -1.

Which of the following statements about phloem is correct?

Phloem transports organic nutrients from leaves to other parts of the plant.
Sieve tube elements have nuclei and are independent cells.
Phloem consists only of parenchyma and sclerenchyma.
Phloem fibers are the main conducting elements.
1

Phloem transports organic nutrients such as sucrose. Sieve tube elements lack nuclei and function with the help of companion cells.

Which of the following statements about phloem fibers is incorrect?

Phloem fibers provide mechanical support.
Phloem fibers are always living cells.
Phloem fibers are the only dead component of phloem.
Phloem fibers are also called bast fibers.
2

Phloem fibers are usually dead at maturity and provide mechanical strength to the plant.

Which of the following statements about monocot leaves is correct?

Monocot leaves have reticulate venation.
Monocot leaves lack stomata.
Bulliform cells help in minimizing water loss.
Monocot leaves have mesophyll differentiated into palisade and spongy parenchyma.
3

Bulliform cells help in rolling the leaves under dry conditions, reducing water loss.

Which type of simple permanent tissue provides mechanical support in mature plants?

Parenchyma
Collenchyma
Sclerenchyma
Xylem
3

Sclerenchyma consists of thick-walled, lignified cells that provide mechanical support in mature plants.

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.

Which tissue system in plants is responsible for the transportation of water and nutrients?

Epidermal tissue system
Ground tissue system
Vascular tissue system
Parenchyma tissue system
3

The vascular tissue system, consisting of xylem and phloem, is responsible for the conduction of water, nutrients, and food in plants.

Which of the following is NOT a part of the epidermal tissue system?

Stomata
Trichomes
Xylem
Epidermal cells
3

Xylem is a part of the vascular tissue system, whereas stomata, trichomes, and epidermal cells belong to the epidermal tissue system.

Which of the following statements about xylem parenchyma is correct?

Xylem parenchyma is dead at maturity.
Xylem parenchyma stores food and helps in lateral conduction of water.
Xylem parenchyma is responsible for the conduction of water.
Xylem parenchyma is composed of lignified dead cells.
2

Xylem parenchyma consists of living cells that store starch and fats and assist in lateral water conduction.

Which characteristic feature is present in dicot leaves but absent in monocot leaves?

Parallel venation
Palisade and spongy mesophyll
Bulliform cells
Scattered vascular bundles
2

Dicot leaves have palisade and spongy mesophyll, which are not distinctly differentiated in monocot leaves.

Which cells in the root actively regulate the movement of water and minerals into the vascular tissue?

Root hairs
Pericycle cells
Endodermal cells
Cortical cells
3

Endodermal cells contain Casparian strips, which regulate the selective movement of water and minerals into the vascular tissue.

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