Morphology of Flowering Plants Test 55

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Morphology of Flowering Plants Test 55

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Weekly Quiz Competition

Question 1
1 / -0

Which one of these is a wrong match?

A
Cyme - Hibiscus

B
Verticillaster - Leucas

C
Corymb- Caesalpinia

D
Spike - Crotalaria

Solution

Ceasalpinia species have terminal receme inflorescence instead of corymb.
Therefore, it is the wrongly matched pair.
So, the correct answer is ' Corymb- Caesalpinia'
Question 2
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Consider the following statements and select true oe false statements from these statements.
(A) The arrangement of flowers in the inflorescence is in acropetal succession with older flowers at the base and younger flower at the apex.
(B) Perigynous flowers are seen in rose plant.
(C) In Orchid, the ovary is superior.

A
All of them are false.

B
(A) and (C) are true but (B) is false.

C
(A) and (B) are true but (C) is false.

D
(A) and (C) are false but (B) is true.

E
(B) and (C) are true but (A) is false.

Solution

The fruit Garcinia cambogia is known as brindle berry. It belongs to the family Clusiaceae. The ovary is inferior.
Therefore, the correct option is C.
Question 3
1 / -0

Lathyrism is caused by

A
Dal

B
Moth dal

C
Khesari dal

D
Glycine

Solution

Lathyrism is a neurological disorder in humans. It is caused due to consumption of legume belonging to genus Lathyrus, particularly Lathyrus sativus or Khesari dal. The cause of the disease is due to neurotoxin ODAP ($$\beta$$ - oxalyl,L $$\alpha$$ - diaminopropionic acid) which is structural analogue of neurotransmitter glutamate. Which results in paralysis of the lower limbs.
So, the correct answer is 'khesari dal'
Question 4
1 / -0

A student observed 34 inforescences in Bougainvillea and 42 inflorescences in Poinsetta . Find out the number of flowers in Bougainvillea and the number of female flower in Poinsettia, respectively.

A
34, 126

B
68, $$\infty $$

C
204, 164

D
102, 42

Solution

The inflorescence in Bougainvillea is a simple cyme or cymule. In cymule, the peduncle ends in a flower and only 2 lateral branches are produced which also ends in flowers. Thus, 3 flowered inflorescence is formed. Flowers are arranged in basipetal manner. Since, the inflorescence number given here is 34, hence, the total numbers of flowers would be 34*3 = 102. Single female flower like inflorescence of Euphorbiaceae (Poinsettia) is called cyathium. The single female flower of cyathium has 3 carpels (tricarpillary) syncarpous pistil. Since, the inflorescence number given here is 42, hence the number of female flowers is 42.
So, the correct answer is '102,42'
Question 5
1 / -0

Which family among the monocotyledons are exceptions, showing hard trunks?

A
Liliaceae

B
Bromeliaceae

C
Palmaceae (Arecaceae)

D
Graminaceae

Solution

Arecaceaeare notable for being the tallest monocots and for the size of their seeds, leaves,and inflorescences. They are chiefly tropical trees, shrubs and vines usually having a tall columnar trunk bearing a crown of large, compound, evergreen leaves arranged at the top of an unbranched stem.
Question 6
1 / -0

Diadelphous condition is common in

A
Malvaceae.

B
Cruciferae.

C
Ceasalpinoidae.

D
Papilionaceae.

Solution

Papilionaceae is the family of leguminous plants in which the androecium has 10 stamens and diadelphous, 9 fused with each other on the anterior side, one free on the posterior side. Anther lobes bilocular, dorsifixed, introrse.
Question 7
1 / -0

In scapigerous umbel the flowers are arranged in manner of

A
Corymb

B
Umbel

C
Panicle

D
Monochasial scorpioid cyme

Solution

Scapigerous umbel or Cymose umbel can be found in onion and garlic. In this type of inflorescence, inflorescence arises from the under ground stem and on it cluster of flowers develop, this bunch of (cluster) flowers looks like a umbel. The flowers are arranged in compact scorpioid cyme order.
Question 8
1 / -0

Maximum fats present in seeds of

A
Arachis hypogea

B
Oryza sativa

C
Cicer arietinum

D
Hibiscus esculentus

Solution

Peanuts belongs to the Fabaceae family, in the genus, Arachis. Peanuts are rich in energy (567 calories per 100 g) and contain health benefiting nutrients, minerals, antioxidants and vitamins, that are essential for optimum health. They compose sufficient levels of mono-unsaturated fatty acids especially oleic acid.
Question 9
1 / -0

Which among dicotyledons are considered to have most primitive genera?

A
papilionaceae (Crotolaria sp.)

B
Cucurbitaceae (Cucurbita sp)

C
Magnoliaceae (Magnolia sp.)

D
Rosaceae (Rosa sp.)

Solution

The earliest known flowering plants date back to about 130 million years ago. According to Cronquist (evolution and classification of flowering plants, 1988), the most primitive of all living angiosperms belong to the subclass Magnoliidae. This subclass contains several primitive plant families, including the water-lily family (Nymphaeaceae), buttercup family (Ranunculaceae) and magnolia family (Magnoliaceae).
Question 10
1 / -0

The most vast dicot family is

A
Fabaceae

B
Compositae

C
Orchidaceae

D
Loranthaceae

Solution

The production of vast amount of grain is one of the most outstanding outcome of modern agriculture. Poaceae (monocot) and fabaceae (dicot) contribute to the species, that are responsible for the vast majority of grain production worldwide.

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Morphology of Flowering Plants Test 55

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Morphology of Flowering Plants Test 55

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Question 1

Cyme - Hibiscus

Verticillaster - Leucas

Corymb- Caesalpinia

Spike - Crotalaria

Solution

Question 2

All of them are false.

(A) and (C) are true but (B) is false.

(A) and (B) are true but (C) is false.

(A) and (C) are false but (B) is true.

(B) and (C) are true but (A) is false.

Solution

Question 3

Dal

Moth dal

Khesari dal

Glycine

Solution

Question 4

34, 126

68, $$\infty $$

204, 164

102, 42

Solution

Question 5

Liliaceae

Bromeliaceae

Palmaceae (Arecaceae)

Graminaceae

Solution

Question 6

Malvaceae.

Cruciferae.

Ceasalpinoidae.

Papilionaceae.

Solution

Question 7

Corymb

Umbel

Panicle

Monochasial scorpioid cyme

Solution

Question 8

Arachis hypogea

Oryza sativa

Cicer arietinum

Hibiscus esculentus

Solution

Question 9

papilionaceae (Crotolaria sp.)

Cucurbitaceae (Cucurbita sp)

Magnoliaceae (Magnolia sp.)

Rosaceae (Rosa sp.)

Solution

Question 10

Fabaceae

Compositae

Orchidaceae

Loranthaceae

Solution

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