Question No:1
In a woody dicotyledonous tree, which of the following parts will mainly consists of primary tissues?
(A) all parts
(B) stem and root
(C) flowers, fruits and leaves
(D) shoot tips and root tips
Question No:2
A common structural feature of vessel elements and sieve tube elements is
(A) enucleate conditions
(B) thick secondary walls
(C) pores on lateral walls
(D) presence of P-protein
Question No:3
For a critical study of secondary growth in plants, which one of the following pairs is suitable?
(A) teak and pine
(B) deodar and fern
(C) wheat and maiden hair fern
(D) sugarcane and sunflower
Question No:4
The length of different internodes in a culm of sugarcane is variable because of
(A) size of leaf lamina at the node below each internode
(B) intercalary meristem
(C) shoot apical meristem
(D) position of axillary buds
Question No:5
Vascular tissues in flowering plants develop from
(A) Periblem
(B) dermatogens
(C) phellogen
(D) procambium
Question No:6
Anatomically fairly old dicotyledonous root is distinguished from the dicotyledonous stem by
(A) absence of secondary stem by
(B) presence of cortex
(C) position of protoxylem
(D) absence of secondary xylem
Question No:7
The annular and spirally thickened conducting elements generally develop in the protoxylem when the root or stem is
(A) elongating
(B) widening
(C) differentiating
(D) maturing
Question No:8
Palisade parenchyma is absent in leaves of
(A) musta
(B) soyabean
(C) gram
(D) sorghum
Question No:9
In barely stem vascular bundles are
(A) closed and scattered
(B) open and in a ring
(C) closed and radial
(D) open and scattered
Question No:10
The common bottle cork is a product of
(A) dermatogens
(B) phellogen
(C) xylem
(D) vascular cambium
Question No:11
Companion cells are closely associated with
(A) sieve elements
(B) vessel elements
(C) trichomes
(D) guard cells
Question No:12
Closed vascular bundles lack
(A) Ground tissue
(B) Conjunctive tissue
(C) cambium
(D) pith
Question No:13
Water containing cavities in vascular bundles are found in
(A) sunflower
(B) maize
(C) Cycas
(D) Pinus
Question No:14
Gymnosperms are also called soft wood spermatophytes because they lack
(A) cambium
(B) phloem fibres
(C) thick-walled tracheids
(D) xylem fibres
Question No:15
Secondary growth in thickness makes distinct annual rings in plants growing in
(A) tropical regions
(B) arctic regions
(C) regions with seasonal variations
(D) any region
Question No:16
The histogen layer present at the apex of the root tip is called
(A) dermatogen
(B) Procambium
(C) calyptrogen
(D) plerome
Question No:17
Tyloses are
(A) Compund sieve plates
(B) lactiferous channels
(C) specialized secretary cells
(D) trachest plugs which plug the lumen of vessels and tracheids
Question No:18
Sieve tube is a part of
(A) xylem
(B) Phloem
(C) sylem and phloem
(D) None of these
Question No:19
The youngest layer of secondary xylem in the wood of dicot plant is located between
(A) Pith and primary xylem
(B) Just outside vascular cambium
(C) Just inside vascular cambium
(D) Just inside cork cambium
Question No:20
Generally a monocot stem bears
(A) bicollateral closed vascular bundles
(B) collateral open vascular bundles
(C) bicollateral open vascular bundles
(D) collateral closed vascular bundles