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  4. Anatomy of Flowering Plants Chapter-Wise Test 2

Anatomy of Flowering Plants Chapter-Wise Test 2

Correct answer Carries: 4.

Wrong Answer Carries: -1.

Which part of a dicot stem contains the starch sheath?

Pericycle
Endodermis
Pith
Vascular bundle
2

In dicot stems, the endodermis is rich in starch grains and is known as the starch sheath.

Which type of simple permanent tissue stores food and is involved in photosynthesis?

Collenchyma
Parenchyma
Sclerenchyma
Xylem
2

Parenchyma is responsible for food storage and, when containing chloroplasts, participates in photosynthesis.

Which layer of cells in a dicot root lies just inside the endodermis?

Cortex
Pericycle
Pith
Medullary rays
2

The pericycle is the layer of cells located just inside the endodermis and is responsible for the initiation of lateral roots.

Which cells are responsible for opening and closing of stomata?

Parenchyma cells
Collenchyma cells
Guard cells
Bulliform cells
3

Guard cells control the opening and closing of stomata by regulating turgor pressure.

Which of the following statements about the xylem is incorrect?

Xylem fibers provide mechanical support.
Xylem parenchyma stores food and conducts water laterally.
Xylem vessels are living at maturity.
Xylem transports water and minerals.
3

Xylem vessels are dead at maturity and function in water transport.

Which of the following statements about medullary rays in dicot stems is correct?

Medullary rays are made of parenchyma and help in lateral conduction.
Medullary rays are absent in dicot stems.
Medullary rays are made of sclerenchyma and provide mechanical strength.
Medullary rays are found only in monocot stems.
1

Medullary rays are parenchymatous cells between vascular bundles that facilitate lateral conduction in dicot stems.

Which of the following statements about collenchyma is incorrect?

Collenchyma provides mechanical support to young stems and leaves.
Collenchyma cells have unevenly thickened cell walls.
Collenchyma cells are dead at maturity.
Collenchyma contains pectin and cellulose in its cell walls.
3

Collenchyma cells remain living at maturity and provide flexibility and mechanical support to growing plant parts.

Which of the following statements about sieve tube elements in phloem is correct?

Sieve tube elements have nuclei at maturity.
Sieve tube elements are supported by companion cells.
Sieve tube elements are responsible for water transport.
Sieve tube elements have thick, lignified walls.
2

Sieve tube elements lack nuclei and depend on companion cells for their function in transporting food.

Which of the following statements about root hairs is correct?

Root hairs develop from the endodermis.
Root hairs increase the surface area for absorption of water and minerals.
Root hairs transport photosynthetic products.
Root hairs are responsible for the transport of organic nutrients.
2

Root hairs are extensions of epidermal cells that increase the surface area for absorption of water and minerals.

Which of the following tissues is responsible for providing flexibility to plant stems?

Parenchyma
Collenchyma
Sclerenchyma
Xylem
2

Collenchyma provides mechanical support while allowing flexibility in young stems and petioles.

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