NEET UG Botany-143

Question No:1

Hydathode helps in

(A) Photosynthesis
(B) Guttation
(C) Transpiration
(D) Respiration

Question No:2

Vascular bundle in plants are said to be open if

(A) they have combium
(B) they lack cambium
(C) they lack xylem
(D) none of the above AIIMS

Question No:3

Generality the secondary phloem remains functional for

(A) Less than one year
(B) more than one year
(C) For one year
(D) as long as the plant lives

Question No:4

The crystals of Calcium carbonate, which appear like a bunch of grapes in epidermal cells of the leaves of some plants are called as

(A) Sphaeraphides
(B) Raphides
(C) otoliths
(D) Cystoliths

Question No:5

Root cap is formed by

(A) Dermatogen
(B) Calyptrogen
(C) Vascular cambium
(D) Wound cambium

Question No:6

Porous wood contains

(A) Vessels
(B) tracheids
(C) Fibers
(D) Sieve tubes

Question No:7

Passage cells are found in

(A) Dicot stem
(B) Aerial root
(C) Monocot root
(D) Monocot stem

Question No:8

In a Dicotyledonous stem, the sequence of tissues from outside to inside is

(A) Phellem-pericycle-endodermis-phloem
(B) Phellem-Phloem-Endodermis-Pericycle
(C) Phellem-Endodermis-Pericycle-Phloem
(D) Pericycle-Phellem-Endodermis-Phloem

Question No:9

Sugarcane plant has

(A) Dumb-bell shaped guard cells
(B) Kidney shaped guard cells
(C) Multicellular epidermal hairs
(D) Differentiated palisade and spongy tissue

Question No:10

In a plant organ which is covered by periderm and in which the stomata are absent, some gaseous exchange still takes place through

(A) Aerenchyma
(B) Trichomes
(C) Pneumatophores
(D) lenticels

Question No:11

Cork cambium results in the formation of cork which becomes impermeable to water due to the accumulation of

(A) resins
(B) suberin
(C) lignin
(D) tannins

Question No:12

Which one of the following related to plant structure is correct?

(A) Cork lacks stomata, hence cannot carry out transpiration
(B) passage cells help in transfer of food from cortex to phloem
(C) Young sieve tube elements possess cytoplasm but no nuclei
(D) the shoot apical meristem has a quiescent centre

Question No:13

The cells of quiescent centre are characterized by

(A) having dense cytoplasm and prominent nuclei
(B) having light cytoplasm and small nuclei
(C) dividing regularly to add to the corpus
(D) dividing regularly to add to the tunica

Question No:14

Chlorenchyma is known to develop in the

(A) cytoplasm of Chlorella
(B) mycelium of a green mould such as Aspergillus
(C) spore capsule of moss
(D) Pollen tube of Pinus

Question No:15

Bark refers to

(A) Phellem, phellogen, phelloderm
(B) Periderm, Cortex
(C) Phellem, Phelloderm, secondary phloem
(D) Periderm, cortex, pericycle, secondary phloem

Question No:16

Cotton fibre mainly contains

(A) Cellulose
(B) Glycogen
(C) Protein
(D) Lipid

Question No:17

Why are vascular bundles closed in monocots?

(A) xylem and phloem are present
(B) xylem and phloem occur as separate bundles
(C) Vascular cambium is present between xylem and phloem
(D) Cambium is absent

Question No:18

The part of the leaf present between upper epidermis and lower epidermis is called as

(A) Midrib
(B) Hypodermis
(C) Mesophyll
(D) Palisade

Question No:19

A tissue whose living cells from the mechanical tissue of activity of growing organs and whose cell walls show cellulosic unlignified thickenings often at the corners of its cells is called:

(A) Parenchyma
(B) Chlorenchyma
(C) Collenchyma
(D) Sclerenchyma

Question No:20

Amphivasal or Leptocentric vascular bundles are found, in

(A) Maize and Wheat
(B) Helianthus and Cucurbita
(C) Dracaena and Cucurbita
(D) Draceana and Yucca