Morphology of Flowering Plants Test 45

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Morphology of Flowering Plants Test 45

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Weekly Quiz Competition

Question 1
1 / -0

Scutellum is seed leaf of

A
Gymnosperms

B
Dicots

C
Pteridophytes

D
Monocots

Solution

Scutellum is present in monocotyledons endospermic seed.
A. Gymnosperms- Seeds are naked.
B. Dicots- Seeds have two cotyledons.
C. Pteridophytes- Seeds are absent.
D. Monocots- Seeds have one cotyledons.
So, the correct answer is 'Monocots'.
Question 2
1 / -0

Plastochron is

A
Period between two successive leaf primordia

B
Distance between two successive leaf primordia

C
Region of origin of root branch

D
Region of origin of stem branch
Solution
Correct Option: A
Explanation:
When a plant grows new leaves, they are produced at regular time intervals.
The time period between the beginning of leaf growth at two consecutive nodes in a growing shoot apex, the temperature being constant is known as Plastochron.
It is also defined as the time between successive leaf initiation events.
Hence, plastochron is the period between two successive leaf primordia.
Question 3
1 / -0

Which is correct arrangement of corolla in family papilionaceae?

A
$$C_{1+(2)+2}$$

B
$$C_{1+2+(2)}$$

C
$$C_{1+2+2}$$

D
None of the above

Solution

Fabaceae or Papilionaceae is a large and economically important family of flowering plants. It includes trees, annual or perennial herbaceous plants and shrubs. In Papilionaceae, the petals are 5 - outermost posterior petal is large which is known as the vexillum or standard, two lateral petals are known as the wings or alae, and the two anterior and innermost petals are united to form a boat-shaped structure known as the keel or carina. Hence, the correct arrangement of the corolla is 1+2+(2).
So, the correct answer is 'B'.
Question 4
1 / -0

The distinct features of fabaceae are

A
Zygomorphic, diadelphous and monocarpellary

B
Actinomorphic, monadelphous and monocarpellary

C
Zygomorphic, monadelphous and pentacarpellary

D
Zygomorphic, polyadephous and tricarpellary

E
Zygomorphic, diadephous and bicarpellary

Solution

Fabaceae or Leguminosae is a large and economically important family of flowering plants. In Fabaceae, the flowers are zygomorphic (radial symmetry), bisexual. The stamens are 10, diadelphous (stamens united by their filaments so as to form two groups). The gynoecium is monocarpellary, syncarpous, superior ovary.
So, the correct answer is 'Zygomorphic, diadelphous and monocarpellary'.
Question 5
1 / -0

Types of roots Plants
A) Prop root 1) Radish
B) Epiphytic root 2) Turnip
C) Stilt root 3) Cassava
D) Tuberous root 4) Baniyan
E) Fusiform 5) Maize
F) Napiform 6) Orchid

A
A- 1, B- 2, C- 3, D- 4, E- 5, F- 7

B
A-2, B- 4, C- 6, D- 1, E- 2, F- 5

C
A- 4, B- 6, C- 5, D- 3, E- 1, F- 2

D
A- 4, B- 1, C- 2, D- 3, E- 5, F- 6

Solution

Types of roots Plants
A)Prop root 4)Banyan
B)Epiphytic root 6)Orchid
C)Stilt root 5)Maize
D)Tuberous root 3)Cassava
E)Fusiform 1)Radish
F)Napiform 2)Turnip
So the correct option is "A-4,B-6,C-5,D-3,E-1,F-2"
Question 6
1 / -0

Identify the root which characterized by the swollen apex and tapered end.

A
Conical

B
Napiform

C
Fusiform

D
Prop

Solution

A) Conical root- The swollen root is broad at the base and tapers gradually towards the apex giving a shape of a cone.
Ex-Carrot.
B) Napiform root- The root is nearly globular or spherical in shape. The basal portion of the root is much swollen which suddenly tapers towards the apex giving a top-shaped appearance.
Ex-Turnip, beetroot.
C) Fusiform root- The root is swollen in the middle and narrow towards its base.
Ex-Radish.
D) Prop root- These are adventitious roots arise from horizontal aerial branches of the trees.
Ex-Banyan.
Question 7
1 / -0

Inflorescence with single central achlamydeous female flower surrounded by number of achlamydeous male flowers is

A
Cyathium

B
Verticillaster

C
Spadix

D
Hypanthodium

Solution

A) Cyathium is the special inflorescence in which the single female flower is present in the center and is surrounded by a number of male flowers inside a cup-shaped involucre.
ex-Euphorbia.
B) Verticillaster is a special inflorescence in which flowers are arranged in two opposite cymose groups on each node.
ex-Osmium (Tulsi).
C) The spadix is a type of racemose inflorescence in which a spadix is covered by a spathe.
ex-maize and bananas.
D) Hypanthium has a flask-shaped fleshy receptacle a pore or ostiole lined by scales and as short canal bearing hair.
ex-Ficus(peepal)
So the correct option is 'Cyathium'.
Question 8
1 / -0

Which of the following wall layer of anthers shows fibrous thickening (of callose)?

A
Epidermis

B
Tapetum

C
Middle layer

D
Endothecium
Question 9
1 / -0

In flowering plants archesporium gives rise to.

A
Wall of sporangium

B
Both wall and sporogenous cells

C
Wall and tapetum

D
Tapetum and sporogenous cells

Solution

Archesporial tissues differentiate to form parietal and sporogeneous cellls. Later on the parietal cells divide to form walls while sporogeneous cellls differentiate to form microspore mother cells and ultimately spores.
So, the correct option is B.
Question 10
1 / -0

Identify the parts labelled a, b and c

A
a- connective tissue, b- endothecium, c- pollen grain

B
a- endothecium, b- connective tissue, c- pollen grain

C
a- pollen grain, b- connective tissue, c- endothecium

D
a- endothecium, b- pollen grain, c- connective tissue

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Types of roots	Plants
A) Prop root	1) Radish
B) Epiphytic root	2) Turnip
C) Stilt root	3) Cassava
D) Tuberous root	4) Baniyan
E) Fusiform	5) Maize
F) Napiform	6) Orchid

Types of roots	Plants
A)Prop root	4)Banyan
B)Epiphytic root	6)Orchid
C)Stilt root	5)Maize
D)Tuberous root	3)Cassava
E)Fusiform	1)Radish
F)Napiform	2)Turnip

Morphology of Flowering Plants Test 45

Result

Morphology of Flowering Plants Test 45

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Question 1

Gymnosperms

Dicots

Pteridophytes

Monocots

Solution

Question 2

Period between two successive leaf primordia

Distance between two successive leaf primordia

Region of origin of root branch

Region of origin of stem branch

Solution

Question 3

$$C_{1+(2)+2}$$

$$C_{1+2+(2)}$$

$$C_{1+2+2}$$

None of the above

Solution

Question 4

Zygomorphic, diadelphous and monocarpellary

Actinomorphic, monadelphous and monocarpellary

Zygomorphic, monadelphous and pentacarpellary

Zygomorphic, polyadephous and tricarpellary

Zygomorphic, diadephous and bicarpellary

Solution

Question 5

A- 1, B- 2, C- 3, D- 4, E- 5, F- 7

A-2, B- 4, C- 6, D- 1, E- 2, F- 5

A- 4, B- 6, C- 5, D- 3, E- 1, F- 2

A- 4, B- 1, C- 2, D- 3, E- 5, F- 6

Solution

Question 6

Conical

Napiform

Fusiform

Prop

Solution

Question 7

Cyathium

Verticillaster

Spadix

Hypanthodium

Solution

Question 8

Epidermis

Tapetum

Middle layer

Endothecium

Question 9

Wall of sporangium

Both wall and sporogenous cells

Wall and tapetum

Tapetum and sporogenous cells

Solution

Question 10

a- connective tissue, b- endothecium, c- pollen grain

a- endothecium, b- connective tissue, c- pollen grain

a- pollen grain, b- connective tissue, c- endothecium

a- endothecium, b- pollen grain, c- connective tissue

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