CBSE Class 11 Biology Anatomy of Flowering Plants MCQs Set A

Question : Function of companion cells is

a) loading of sucrose into sieve elements

b) providing water to phloem

c) loading of sucrose into sieve elements by passive transport

d) providing energy to sieve elements for active transport

Answer : loading of sucrose into sieve elements

Question : The cork cambium, cork and secondary cortex are collectively called

a) periderm

b) phelloderm

c) phellogen

d) phellem

Answer : periderm

Question : Which of the following does not have stomata ?

a) Submerged hydrophytes

b) Mesophytes

c) Hydrophytes

d) None of these

Answer : Submerged hydrophytes

Question : The chief water conducting elements of xylem in gymnosperms are :

a) tracheids

b) fibres

c) transfusion tissue

d) None of these

Answer : tracheids

Question : Which is correct about transport or conduction of substances?

a) Organic food moves upwardly and downwardly through phloem

b) Inorganic food moves upwardly and downwardly through xylem

c) Organic food moves up through phloem

d) Organic food moves up through phloem

Answer : Organic food moves upwardly and downwardly through phloem

Question : A narrow layer of thin walled cells found between phloem/ bark and wood of a dicot is

a) vascular cambium

b) pericycle

c) cork cambium

d) endodermis

Answer : vascular cambium

Question : Which of the following statements is true?

a) Tracheids are unicellular with wide lumen

b) Vessels are unicellular with wide lumen.

c) Tracheids are multicellular with narrow lumen

d) Vessels are multicellular with narrow lumen.

Answer : Tracheids are unicellular with wide lumen

Question : The quiescent centre in root meristem serves as a

a) reserve for replenishment of damaged cells of the meristem.

b) region for absorption of water

c) reservoir of growth hormones

d) site for storage of food which is utilized during maturation.

Answer : reserve for replenishment of damaged cells of the meristem.

Question :  Root hair arises from

a) epiblema

b) endodermis

c) pericycle

d) cortex

Answer : epiblema

Question : Phellogen and phellem respectively denote

a) cork cambium and cork

b) cork and cork cambium

c) secondary cortex and cork

d) cork and secondary cortex

Answer : cork cambium and cork

Question : The common bottle cork is a product of

a) Phellogen

b) Vascular cambium

c) Dermatogen

d) Xylem

Answer : Phellogen

Question : A vascular bundle in which the protoxylem is pointing to the periphery is called

a) exarch

b) closed

c) endarch

d) radial

Answer : exarch

Question : Which of the following does not have stomata?

a) Submerged hydrophytes

b) Xerophytes

c) Mesophytes

d) Hydrophytes

Answer : Submerged hydrophytes

Question : Collenchyma differs from parenchyma in having

a) pectin deposits at corners

b) vacuoles

c) cellulose walls

d) living protoplasm

Answer : pectin deposits at corners

Question : Which of the following plant shows multiple epidermis?

a) Nerium

b) Croton

c) Allium

d) Cucurbita

Answer : Nerium

Question : Epidermis is absent in

a) root tip and shoot tip

b) ovule and seed

c) shoot bud and floral bud

d) petiole and pedice

Answer : root tip and shoot tip

Question : Which of the following layer is present nearest of plasma membrane in plant cell?

a) Tonoplast

b) Middle lamella

c) Secondary wall

d) Primary wall

Answer : Tonoplast

Question : In land plants, the guard cells differ from other epidermal cells in having

a) chloroplasts

b) mitochondria

c) cytoskeleton

d) endoplasmic reticulum

Answer : chloroplasts

Question : In endarch condition of xylem, protoxylem lies ______ of metaxylem.

a) on inner side

b) on outer side

c) both on inner and outer side

d) in centre

Answer : on inner side

Question : Y-shaped arrangement of xylem vessels is found in

a) monocot stem

b) monocot root

c) Both

d) None of these

Answer : monocot stem