FREE NEET Biology Practice MCQ Test: Anatomy Of Flowering Plants Exercise 4 Questions Answers With Detailed Explanations [PDF]

Answer: (d)

Answer: (d)

Function of companion cell is to load sugar and amino acids into sieve elements. These cells use transmembrane proteins to take up by active transport.

Answer: (d)

The leaf and stem epidermis of the plant are covered with pores called stomata. Each stomata is surrounded by a pair of specialised epidermal cells known as guard cells which are in some cases further surrounded by another category of less modified epidermal cells known as subsidiary cells which provide support to the guard cells.

Answer: (c)

Cork cambium or phellogen is a type of cambium arising within the outer layer of the stems of woody plants, usually as a complete ring surrounding the inner tissues. The cells of the cork cambium divide to produce an outer corky tissue (cork or phellem) and an inner secondary cortex (phelloderm). The common bottle cork produced from Quercus suber is a product of phellogen.

Answer: (a)

Answer: (b)

Pith and cortex do not differentiate in monocot stem. Since numerous vascular bundles lie scattered, the ground tissue system in a monocot stem is distinguishable into hypodermis and ground parenchyma.

Answer: (b)

Answer: (a)

Answer: (b)

Answer: (d)

Answer: (c)

Answer: (c)

Answer: (d)

Answer: (d)

Meristem is classified based on position in plant bodies into lateral meristem, apical meristem and intercalary meristem. Lateral meristem is present on the lateral sides, e.g., vascular cambium (fascicular and interfascicular cambium) and cork cambium (phellogen).

Answer: (a)

Ground tissue includes all tissues except epidermis and vascular bundles. The ground tissue comprises the bulk of the primary plant body. Parenchyma, collenchyma and sclerenchyma cells are common in the ground tissue.

Answer: (a)

Ring porous wood carries more water when need is higher. Ring porous wood provides better translocation when requirement of plant is more. Hence, it is very advanced than diffuse porous wood.

Answer: (c)

Answer: (a)

Stem of maize has water containing cavities in vascular bundles.

Answre: (a)

Vascular bundle consists of complex tissues, the phloem and xylem. In dicots, between the xylem and phloem, cambium is present which helps in secondary growth. This type of vascular bundle is called open. While in monocots cambium is absent, so these are called closed vascular bundles.

Answer: (b)