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Botany
Anatomy of Flowering Plants
50 questions · Click an option and press Check Answer to reveal the result
1
What type of vascular bundles are found in Isobilateral type of leaves ?
A
Radial with exarch xylem
B
Conjoint with endarch xylem
C
Bicollateral with exarch xylem
D
Radial with mesarch xylem
2
Which of the following is dead component of phloem?
A
Bast fibre
B
Sieve tube
C
Phloem parenchyma
D
Companion cells
3
Endodermis is very distinct and pith is well developed in which part of monocot plant?
A
Root
B
Stem
C
Leaf
D
Branch of the stem
4
In a dorsiventral leaf, the vascular bundles are surrounded by a layer of thick-walled cells. These cells are known as:
A
Mesophyll cells.
B
Bundle sheath cells.
C
Subsidiary cells.
D
Companion cells.
5
In leaves, the ground tissue consists of thin-walled chloroplast containing cells and is called:
A
pith.
B
mesophyll.
C
endodermis.
D
pericycle.
6
Select the correct combination of the statements regarding the characteristics of middle lamella
a. It holds the different neighbouring cells together.
b. It is composed of Mg pectate only.
c. It gets dissolved during ripening of fruits.
A
a & c
B
b & c
C
Only b
D
a, b & c
7
Identify the types of vascular bundle A and B.
A
Radial; Conjoint closed
B
Conjoint closed; Conjoint open
C
Conjoint open; Conjoint closed
D
Radial; Conjoint open
8
Casparian strips are:
A
Characteristic of epidermis
B
Formed by waxy material in endodermis
C
Also called starch sheath
D
Permeable to water
9
I. Peripheral vascular bundles are smaller than the centrally located vascular bundles.
II. Phloem parenchyma is absent.
III. Water containing cavities are present within the vascular bundles. Which of the above characters belongs to the monocotyledonous stem?
A
I and II
B
II and III
C
III and I
D
I, II and III
10
Stomatal apparatus includes:
A
Stomata only
B
Guard cells only
C
Guard cells + pore
D
Guard cells + pore + subsidiary cells
11
Which statement are correct about guard cells?
I. They are modified ground tissues.
II. They are chlorophyllous.
III. Its outer wall is thin and inner wall is highly thickened.
IV. They regulate stomatal movement for transpiration and gaseous exchange.
A
All except I
B
All except II
C
All except III
D
All except IV
12
Read the following statements about the stem and identify them as true (T) or false (F).
(A) It is the ascending part of plant axis.
(B) It develops from radicle of the embryo of a germinating seed.
(C) Stems are generally green when older but brown when young.
(D) It may perform function of vegetative propagation.
A
A-T, B-F, C-F, D-T
B
A-T, B-T, C-F, D-T
C
A-T, B-T, C-F, D-F
D
A-T, B-F, C-F, D-F
13
The stomatal aperture, guard cells and the surrounding subsidiary cells are together called _________.
A
cortex
B
stomatal pore
C
stomatal apparatus
D
ground tissue
14
A mature sieve element possesses:
A
Cytoplasm, small vacuole
B
Cytoplasm, large vacuole
C
Nucleus, small vacuole
D
Nucleus, large vacuole
15
Choose the correct match.
A
Phloem fibres - Made up of sclerenchymatous cell
B
Endodermis - Multilayered in monocot stem
C
Pith - Large in dicot leaf
D
Cortex - Single layered in root
16
Select the correct match.
A
Starch sheath - Endodermis of dicot root
B
Casparian strips - Endodermis of monocot stem
C
Bundle sheath - Vascular bundle of dicot stem
D
Bulliform cells - Monocot leaf
17
Which is not sclerenchymatous?
A
Pericycle of root
B
Hypodermis of monocot stem
C
Xylem fibres
D
Phloem fibres
18
Monocot root differs from dicot root in having:
A
Endodermis forms lateral roots
B
More than 6 vascular bundles
C
Small pith
D
Casparian strips
19
In dicot leaves, size of vascular bundles differs due to:
A
Bundle sheath
B
Independent of veins
C
Veins vary in thickness
D
Stomata distribution
20
Given below are two statements: Statement I: In monocot leaf, mesophyll is differentiated into palisade parenchyma and spongy parenchyma. Statement II: The parallel venation in monocot leaves is reflected in the near similar sizes of vascular bundles.
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.
21
Endarch and exarch xylem are respectively found in:
A
dicot stem and dicot root.
B
monocot root and dicot root.
C
dicot root and monocot leaf.
D
monocot root and dicot stem.
22
Match the following.
A
Stomata — Encloses pore
B
Guard cells — Multicellular
C
Cuticle — Epidermis
D
Trichome — Waxy layer
23
Select the correct statement regarding monocot stem.
A
It has well developed pith.
B
It has scattered vascular bundles.
C
Endodermis with casparian strips.
D
Presence of conjoint and open type vascular bundles.
24
Root hairs are:
A
Unicellular pericycle cells
B
Multicellular endodermis
C
Unicellular epidermal cells
D
Multicellular epidermal cells
25
Palisade parenchyma is present:
A
below the abaxial epidermis in monocot leaves.
B
below the adaxial epidermis in monocot leaves.
C
around the vascular bundles in dicot leaves and monocot leaves.
D
below the adaxial epidermis in dicot leaves.
26
Transverse section of a part of the dicot stem shows all of the following, except:
A
collenchymatous hypodermis.
B
pericycle present in the form of semi-lunar patches.
C
presence of medullary rays.
D
peripheral vascular bundle is generally smaller.
27
Xylem is called complex tissue because:
A
Thick lignified wall
B
Different kinds of elements
C
Mechanical support
D
Conducts water
28
Vascular cambium and cork cambium are responsible for the:
A
apical meristem.
B
lateral growth.
C
intercalary meristem.
D
promeristem.
29
Parenchyma have all role except:
A
mechanical.
B
storage.
C
secretory.
D
photosynthesis.
30
Which of the following is the correct statement for intercalary meristem?
A
It lies at the tip of the shoot apex always.
B
It does not appear early in life.
C
It is the primary meristem.
D
It helps in increasing the girth of the plant.
31
Match the following Columns.
| Column I | Column II |
|---|---|
ABulliform cells | iStomata |
BGuard cells | iiEndodermis |
CCasparian bands | iiiAccessory cells |
DSubsidiary cell | ivIsobilateral leaf |
A
A-iv, B-i, C-ii, D-iii
B
A-i, B-iv, C-ii, D-iii
C
A-iv, B-ii, C-iii, D-i
D
A-i, B-ii, C-iii, D-iv
32
Which of the following statement is not true regarding the internal structure of flowering plants?
A
Vascular bundles are scattered in maize root
B
Casparian strips are present in endodermis of maize root
C
Large number of vascular bundles are arranged in ring in sunflower stem
D
Phloem parenchyma is usually absent in maize stem
33
Select the correct statement from the following.
A
In isobilateral leaves, the stomata are present only on the abaxial epidermis.
B
All tissues except epidermis and vascular bundles constitute the stele.
C
The endodermis of dicot stem is also referred to as the starch sheath.
D
In monocot roots, the pith is small and inconspicuous.
34
Which of the following is not part of stele?
A
Pericycle
B
Vascular Bundle
C
Pith
D
Endodermis
35
Which element of xylem stores food materials in the form of starch or fat and also involved in radial conduction of water?
A
Tracheids
B
Vessels
C
Xylem parenchyma
D
Xylem fibres
36
A tissue is a group of cells:
A
common in origin and usually performs a common function.
B
dissimilar in origin and function.
C
common in origin but usually performs dissimilar function.
D
dissimilar in origin and usually performs dissimilar function.
37
Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R: Assertion A: In a dicot leaf, the size of the vascular bundles are dependent on size of the veins. Reason R: The vascular bundles are surrounded by a layer of thin-walled bundle sheath cells in a dorsiventral leaf.
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.
38
Radial vascular bundle can be seen in:
A
leaf.
B
root.
C
stem.
D
flower.
39
How many of the following statements about the anatomy of a dicot stem are correct?
A. The vascular bundles are arranged in a ring.
B. The primary xylem has exarch protoxylem.
C. The outermost layer is the epidermis, which may bear trichomes.
D. The cortex is differentiated into hypodermis, cortical layers, and endodermis.
E. The central portion of the stem is occupied by a large, conspicuous pith.
Choose the correct option.
A
Two only
B
Three only
C
Four only
D
Five
40
Thickening material present in wall of collenchyma is
A
Pectin, cellulose, hemicellulose
B
Lignin, cellulose, hemicellulose
C
Hemicellulose, suberin, cellulose
D
Suberin, pectin, cellulose
41
________ regulate the opening and closing of stomata.
A
Bulliform cells
B
Guard cells
C
Bundle sheath cells
D
Subsidiary cells
42
Select the incorrect statement regarding bulliform cells.
A
Present in abaxial epidermis
B
Large empty colourless cells
C
Help in leaf rolling
D
Present in grasses
43
Read the following statements: A. The epidermal tissue systems are made of epidermal cells, stomata and the epidermal appendages. B. The monocots and dicots are seen to be anatomically different. C. Epidermis is usually multilayered. D. The cells of epidermis bear a number of hairs. How many of the above given statement(s) is/are incorrect?
A
One
B
Two
C
Three
D
Four
44
Select the incorrect statement from the following.
A
Trichomes help in preventing water loss due to transpiration.
B
Cuticle prevents loss of water.
C
Cuticle is absent in roots.
D
Epidermal cells are parenchymatous with a small vacuole.
45
Choose the correct option for identification of A to E in the given diagram of a portion of TS of dicot stem
A
A–Collenchyma, B–Sclerenchyma, C– Cambium, D–protoxylem, E–Pith
B
A–Sclerenchyma, B–Collenchyma, C– Cambium, D–Protoxylem, E–Pith
C
A–Parenchyma, B–Collenchyma, C– Cambium, D–Protoxylem, E–Pith
D
A–Collenchyma, B–Parenchyma, C– Cambium, D–Protoxylem, E–Pith
46
Which tissue is usually dead and without protoplast:
A
parenchyma.
B
collenchyma.
C
sclerenchyma.
D
meristematic.
47
In which of the following cambium is present?
A
Dicot stem
B
Monocot stem
C
Dicot leaves
D
Monocot root
48
Stem of maize shows:
A
Open vascular bundles
B
Starchy endodermis
C
Sclerenchymatous cortex
D
Water containing cavities
49
Lateral roots arise from:
A
cambium ring.
B
epiblema.
C
pericycle.
D
endodermis.
50
Bundle sheath is made up of parenchymatous cells:
A
Monocot stem
B
Monocot leaves
C
Dicot leaves
D
Both 2 and 3
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