NEET UG Botany-140

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