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Botany
Morphology of flowering plant
51 questions · Click an option and press Check Answer to reveal the result
1
Match List-I with List-II.
A
Zygomorphic — Reduced leaf
B
Actinomorphic — Bilateral symmetry
C
Bract — Radial symmetry
D
Petiole — Stalk of leaf
2
Select the incorrect statement.
A
Aleurone layer of maize seed is rich in protein
B
Bean seeds are non-endospermic
C
Scutellum is mostly seen in seeds of dicot plant
D
Maize seeds are endospermic
3
Which is false for vexillary or papilionaceous aestivation?
A
Two smallest anterior petals are known as keel
B
Two lateral petals are known as wing
C
The largest standard petal overlaps wings
D
The wings overlap the largest standard petal
4
Part of the flower 'perianth' is characterised by:
A
outer part of flower in which calyx and corolla are not distinguishable
B
when stamens and gynoecium are not distinguishable
C
when only calyx is present
D
when calyx and corolla both are absent in a flower
5
Select the correctly matched pair with respect to fruit.
A
Pea - Drupe
B
Maize - Caryopsis
C
Sunflower - Berry
D
Coconut - Legume
6
Identify the correct features of mango and coconut fruits.
A
A, B and C only
B
A and D only
C
A and B only
D
A, C and D only
7
Which of the following is correct about flower? A. Reproductive unit in the angiosperms. B. Calyx and corolla are accessory organ. C. A flower having either only stamens or only carpels are unisexual. D. In some flowers like lily, the calyx and corolla are not distinct.
A
A and B only
B
All except B
C
C and D only
D
A, B, C and D
8
When the margins of sepals or petals overlap one another without any particular direction, the condition is termed as:
A
vexillary
B
imbricate
C
twisted
D
valvate
9
Lodicules are found in:
A
cotton
B
wheat
C
cauliflower
D
mustard
10
If pericarp of a fruit is thick and fleshy then:
A
it can be differentiated into outer epicarp and inner endocarp only
B
it is called as parthenocarpic fruit
C
it is called as capsule
D
it can be differentiated into epicarp, mesocarp and endocarp
11
Rhizophora grow in swampy areas and its roots come out of the ground vertically upward, these roots are:
A
prop roots
B
stilt roots
C
pneumatophores
D
suckers
12
Thorns of Bougainvillea:
A
are modified leaves
B
arise from base of leaves
C
protect plants from browsing animals
D
are modified apical buds
13
In palmately compound leaf, the leaflets develop from a common point at the tip of:
A
rachis
B
stipule
C
petiole
D
nodes
14
Identify the correct statement(s) and choose the option accordingly. A. Superior palea and inferior palea are characteristics of family Poaceae. B. Calyx and corolla is not differentiated in family Asteraceae. C. Dimorphic flower is seen in sunflower. D. Swollen placenta with many ovules is characteristics of potato family.
A
A and C only
B
All except B
C
A and D only
D
B and C only
15
Which representation regarding the floral formula of Brassicaceae is correct?
A
K4+2
B
A2+4
C
G2
D
C1+2+(2)
16
Which of the following is incorrect statement ?
A
The morphological features of stems are like the presence of nodes and internodes, multicellular hair and positively phototropic nature.
B
Leaf is a lateral outgrowth of stem developed exogenously at the node.
C
The floral characters arises from the basis of classification and identification of flowering plants
D
Different floral appendages are laterally arranged on successive internode
17
Match List-I with List-II.
List-I List-II
(A) Plum (I) Asymmetrical flower
(B) Citrus (II) Polyadelphous stamens
(C) Canna (III) Half-inferior ovary
(D) Cassia (IV) Imbricate aestivation
Choose the most appropriate answer from the options given below.
A
A-I, B-II, C-III, D-IV
B
A-III, B-II, C-I, D-IV
C
A-II, B-I, C-IV, D-III
D
A-IV, B-III, C-II, D-I
18
Which of the following is incorrect about dicot seed?
A
Micropyle is present above the hilum
B
Radicle and plumule are present at two ends of embryonal axis
C
Seed coat has three layers
D
Cotyledons are generally without food reserve
19
Find out the correct statement:-
a. RNA mostly helps in storage of information.
b. DNA was derived from RNA
c. In eukaryotes the freshly transcribed RNA is functional, hence can directly be translated.
d. Regulation of transcription is the primary step for regulation of gene expression.
A
a, b and c
B
only b and d
C
a, b and d
D
a, b, c and d
20
Leaflets are attached at a common point i.e. at the tip of petiole in:
A
simple leaf
B
pinnately compound leaves
C
palmately compound leaves
D
Both A and C
21
Monocarpellary gynoecium with many ovules in ovary is present in :
A
Pea
B
Mango
C
Maize
D
Hibiscus
22
In epigynous flowers, the margin of ___ grows upward enclosing the ovary completely and getting fused with it, the other parts arise above the ___.
A
thalamus, ovary
B
petiole, ovary
C
corolla, gynoecium
D
petal, thalamus
23
How many of the following features are seen in mustard plant?
Fibrous root system, Alternate phyllotaxy, Parallel venation, Actinomorphic flower, Superior ovary, Apocarpous condition, Parietal placentation
A
Four only
B
Three only
C
Two only
D
One only
24
Which of the following statements is not correct for floral formula?
A
'Br' stands for bracteate and 'K' stands for calyx
B
Superior ovary is represented as G
C
⊕ represents actinomorphic and % represents zygomorphic nature of flower
D
Fusion is indicated by enclosing the figure with bracket
25
In which plant does a one-chambered ovary develop into a two-chambered structure due to the formation of a false septum?
A
Pea
B
Lemon
C
Mustard
D
Sunflower
26
Read the following statements and select the correct statement(s). A. Parthenocarpic fruits are formed without fertilisation of the ovary. B. The fruit consists of a wall or pericarp and seeds. C. The innermost covering of a seed is the seed coat. D. The endosperm formed as a result of double fertilisation, is a food storing tissue.
A
A and B only
B
All except C
C
C and D only
D
A, B, C and D
27
Find the odd one with respect to Asteraceae family.
A
Dimorphic flower
B
Whorls of bracts
C
Calyx modified into pappus
D
Corolla is polypetalous
28
Stilt roots are found in:
A
banyan tree
B
maize only
C
sugarcane only
D
Both B and C
29
One pair of simple leaves arises from same node in :
A
Sunflower and mustard
B
Calotropis and Alstonia
C
Calotropis and guava
D
Mustard and neem
30
Select the wrong statement.
A
In Salvia, length of filaments within a flower may vary
B
A flower may be trimerous, tetramerous or pentamerous when the floral appendages are in multiples of 3, 4 or 5
C
Flower without bract is called ebracteate
D
The stalk of flower is called receptacle
31
The floral formula given below belongs to which family? Br ⊕ ⚥ Epi(3-9) K(5) C5 A(∞) G(5-∞)
A
Malvaceae
B
Solanaceae
C
Asteraceae
D
Fabaceae
32
Select the wrong statement.
A
In mustard, length of filaments within a flower may vary
B
Lily flower has epipetalous stamens
C
A sterile stamen is called staminode
D
Lemon has polyadelphous stamens
33
Match List-I with List-II. List-I List-II (A) Stamens united in more than two bundles (I) Polyadelphous (B) Parietal placentation (II) Dianthus (C) Free central placentation (III) Argemone (D) Stamens attached to the petals (IV) Brinjal
A
A-I, B-II, C-IV, D-III
B
A-III, B-IV, C-II, D-I
C
A-I, B-III, C-II, D-IV
D
A-III, B-II, C-IV, D-I
34
Find the odd one w.r.t. androecium.
A
Androecium is composed of stamens
B
The pollen grains are produced in pollen-sacs
C
Stamen consists of a filament and anther
D
Each anther is usually unilobed
35
Which of the following is correct about flower?
A
Reproductive unit in angiosperms
B
Calyx and corolla are accessory organs
C
Typical flower has four whorls
D
Whorls arranged on thalamus
36
Which of the given functions is generally not performed by roots?
A
Absorption of water
B
Absorption of minerals
C
Providing anchorage to the plant parts
D
Synthesis of food materials
37
In gamosepalous condition:
A
corolla has fused petals
B
corolla has free petals
C
calyx is fused with petals
D
calyx has fused sepals
38
The fruit of strawberry;
A
has no role of ovary in its formation.
B
is a true fruit.
C
has thalamus as the edible part.
D
develops by apomixis.
39
Find out the incorrect option.
A
Angiosperms show little diversity in morphology
B
Direct elongation of radicle forms primary root
C
Prop roots are present in banyan tree
D
Carrot is modified tap root
40
The floral formula given belongs to which family?
A
Malvaceae
B
Solanaceae
C
Asteraceae
D
Liliaceae
41
How many of given characters is/are true for the members of compositae family? A. Basal placentation B. Non-endospermic seed C. Presence of pappus D. Presence of bracteate flowers E. Cymose inflorescence
A
Two
B
Three
C
Four
D
One
42
The family Liliaceae is characterised by:
A
vexillary aestivation, tepals five, capsule fruit
B
endospermous seed, tap root, asymmetric flower
C
valvate aestivation, stamen six, umbellate clusters
D
underground bulbs, ovary superior, tetracarpellary
43
Match the column I with column II and select the correct option from options given below:
| Column I | Column II |
|---|---|
ABasal | iP. Sunflower |
BMarginal | iiQ. Pea |
CParietal | iiiR. Argemone |
DFree central | ivS. Dianthus |
A
A : P ; B : Q ; C : S ; D : R
B
A : P ; B : Q ; C : R ; D : S
C
A : P ; B : S ; C : Q ; D : R
D
A : P ; B : S ; C : R ; D : Q
44
A sterile stamen is called:
A
monoadelphous
B
epipetalous
C
epiphyllous
D
staminode
45
A typical leaf consists of three main parts: leaf base, petiole and lamina. In some leguminous plants the leaf base may become swollen, which is called pulvinus. Choose the correct option.
A
Statement I is correct but Statement II is incorrect
B
Statement I is incorrect but Statement II is correct
C
Both Statement I and Statement II are correct
D
Both Statement I and Statement II are incorrect
46
Match the following columns :
A
A-iv, B-i, C-ii, D-iii
B
A-iv, B-ii, C-i, D-iii
C
A-iv, B-ii, C-i, D-iii
D
A-iii, B-iv, C-i, D-ii
47
Which of the following is incorrect about carpel?
A
Ovary is enlarged basal portion
B
Stigma is usually at tip of style
C
Style is elongated tube over ovary
D
Style is the receptive surface for pollen grains
48
Leaf base may bear two lateral small leaf like structures called:
A
lamina
B
pulvinus
C
stipules
D
sepals
49
When margins of sepals or petals overlap without any definite direction, it is called:
A
vexillary
B
imbricate
C
twisted
D
valvate
50
The respiratory roots come out of ground and grow vertically upwards in:
A
banyan tree
B
Rhizophora
C
sugarcane
D
Bougainvillea
51
Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R: Assertion A: In racemose type of inflorescence, flowers are borne in an acropetal order. Reason R: In racemose types of inflorescence, the main axis terminates in a flower.
A
A is true but R is false
B
A is false but R is true
C
Both A and R are true and R is the correct explanation of A
D
Both A and R are true but R is NOT the correct explanation of A
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