NEET UG Botany MCQ-46

Question No:1

In Calotropis, phyllotaxy of leaves is

(A) Whorled
(B) alternate
(C) Opposite
(D) alternate and opposite

Question No:2

Rhizome differs from root in

(A) presence of chlorophyll
(B) presence of scale leaves and buds
(C) underground position
(D) vertical growth in the soil

Question No:3

Flowers are trimerous in

(A) Datura
(B) Dolichos
(C) Gloriosa
(D) Hibiscus

Question No:4

Fibrous root system is mostly found in

(A) Ferns
(B) Grasses
(C) Conifers
(D) Dicots

Question No:5

The symmetry of actinomorphic flower is

(A) Bilateral
(B) Asymmetric
(C) Radial
(D) lateral

Question No:6

Epigynous flower is

(A) with superior ovary
(B) in guava, cucumber
(C) in mustard, brinjal
(D) with perigynous ovary

Question No:7

Aestivation in carissa and gulmohur is

(A) valvate
(B) Vexillary
(C) twisted
(D) imbricate

Question No:8

Varied lengths of staminae filaments within a flower is in

(A) Salvia
(B) Solanum
(C) Datura
(D) Lilium

Question No:9

Apocarpous gynoecium is found in

(A) Tomato
(B) Datura
(C) Lotus
(D) Cotton

Question No:10

Flower is asymmetric in

(A) Canna
(B) Cassia
(C) Calotropis
(D) mustard

Question No:11

Axillary buds are modified to thorns in :

(A) Acacia arabica
(B) Duranta
(C) Opuntia
(D) Roses

Question No:12

Tallest perennial grass is :

(A) Sugarcane
(B) Saccharum munja
(C) Bamboo
(D) Cynodon

Question No:13

Axillary stem tendrils are found in :

(A) Passiflora
(B) Vitis vinifera
(C) Antigonon
(D) Clematis

Question No:14

Offset type stem occurs in :

(A) Pistia
(B) Spirodela
(C) Lemna
(D) Wolffia

Question No:15

Mentha plant grows profusely by forming

(A) Suckers
(B) Runners
(C) Creepers
(D) Twiners

Question No:16

Stem is modified to fleshy phylloclade in

(A) Opuntia
(B) Ruscus
(C) Colocasia
(D) Oxalis

Question No:17

Bryophyllum is a classical example of vegetative propagation by

(A) Reproductive leaves
(B) Flower buds
(C) Roots
(D) Stem cuttings

Question No:18

Potato tubers are modified stem as they bear

(A) Axillary buds
(B) Tap roots
(C) Fibrous roots
(D) Leaves at nodes

Question No:19

Assimilatory roots are found in :

(A) Tinospora
(B) Vanda
(C) Piper
(D) Pandanus

Question No:20

Negative geotropism is shown by the roots of

(A) Orchids
(B) Ficus
(C) Rhizophora
(D) Trapa bispinosa