Morphology of Flowering Plants Test 74

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Morphology of Flowering Plants Test 74

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Weekly Quiz Competition

Question 1
1 / -0

Inflorescence in Ficus is

A
Hypanthodium

B
Cyattium

C
Venicillastet

D
Cyrnose

Solution

Hypanthodium is a modification in peduncle which forms a narrow cup like structure. The male flower develops towards the mouth whereas the female flower develops at the base of the cup . Examples of flowers with such an inflorescence are Banyan, Peepal, Ficus species.
Thus, the correct answer is option A.
Question 2
1 / -0

Which one of the following inflorescences is found in a sunflower?

A
Capitulum

B
Cyathium

C
Panicle

D
Spadix

Solution

An inflorescence is a group or cluster of flowers arranged on a stem that is composed of the main branch or a complicated arrangement of branches. Morphologically, it is the modified part of the shoot of seed plants where flowers are formed. A capitulum or head, the characteristic inflorescence of the sunflower family (Asteraceae). Depending on the tribe, the inflorescence may consist of ray flowers, disk flowers, or both ray and disk flowers.

Question 3

1 / -0

Match the parts in Column A with the flowers or parts of flower in Column B.

Column A	Column B
(a) Polyadelphous	(i) Polypetalous
(b) Pollen grains	(ii) Calyx, corolla
(c) Free petals	(iii) Nectar
(d) Non-essential	(iv) Bombax
(e) Sweet fragrant fluid	(v) Pollen sac

a-v, b-iv, c-iii, d-ii, e-i

a-i, b-ii, c-iii, d-iv, e-v

a-iv, b-v, c-i, d-ii, e - iii

a-ii, b-v, c-i, d-iv, e-iii

Solution

$$\textbf{Solution:}$$

a. Polyadelphous - iv. Bombax
$$\bullet$$ In polyadelphous flowers, the anthers are united into three or more groups.
$$\bullet$$ Bombax is an example of polyadelphous flowers.

b. Pollen grains - v. Pollen sac
$$\bullet$$ Pollen grains are present in pollen sacs of the anther.

c. Free petals - i. Polypetalous

$$\bullet$$ In polypetalous flowers, the petals are separate/free.

d. Non-essential - ii. Calyx, corolla
$$\bullet$$ calyx and corolla are non-essential parts as they do not play any role in the reproduction process of the plant.

e. Sweet fragrant fluid - iii. Nectar

$$\bullet$$ Some flowers produce a sweet fragrant called nectar as a reward for pollination.

$$\bullet$$ Pollinators like bees collect nectar to produce honey.

Question 4
1 / -0

The capitulum type of inflorescence is found in

A
Marigold

B
Slavia

C
Emphorbia

D
Jasmine

Solution

In capitulum type of inflorescence, the main axis becomes flat and called receptacle. It bears many sessile and small florets. Peripheral flowers called ray florets are pistillate or neuter and zygomorphic, whereas disc florets are bisexual and actinomorphic. This type of inflorescence is also known as a head inflorescence. It is found in Sunflower, Zinnia, Dahlia, Marigold, etc.
Question 5
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All given statements with respect to cymose inflorescence are correct, except

A
Centrifugal opening pattern of flowers

B
Unlimited growth of axis

C
Main axis terminates in a flower

D
Basipetal arrangement of flowers

Solution

Cymose inflorescence refers to a kind of flowering shoot in which the first flower develops from the main axis (flower stalk), and thereby it terminates the growth of the axis. The new flowers and buds are produced from lateral branches. The arrangement of flowers in cymose inflorescence is basipetal. Thus, in cymose inflorescence the growth of axis is limited.
Question 6
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In cyathium inflorescence

A
single male flower is surrounded by female flowers.

B
male and female flowers are borne in different plants

C
there is only one male and one female flower

D
single female flower is surrounded by many peripheral male flowers.

Solution

In Cyathium inflorescence, female flower is centrally placed and numerous male flowers are centrifugally arranged. So the correct option is ' single female flower is surrounded by many peripheral male flowers'
Question 7
1 / -0

Find the odd one (inflorescence axis elongation).

A
Umbel

B
Spike

C
Raceme

D
Catkin

Solution

There are two types of inflorescence, namely racemose and cymose. In racemose, the youngest flower is present near the apex and older flower is present towards the base. Racemose inflorescence is of 3 types with respect to axis elongation. These are elongated main axis, shortened main axis and flattened main axis. Examples of inflorescence in which axis is elongated include raceme, spike, catkin, spadix. Examples of inflorescence in which axis is shortened include corymb, umbel. Examples of inflorescence in which axis is flattened include capitulum.
Thus, the correct answer is 'Umbel.'
Question 8
1 / -0

Which of the following is the medicinal importance of the given plant species?

A
It helps in reducing the inflammation and pain.

B
It can cure cancer

C
It is used to cure ulcers, burns, sunburns, and fungal infection

D
Both A and C

Solution

The given plant species is Aloe vera. Its binomial nomenclature is Aloe vulgaris. It is an evergreen perennial. It is used in the treatment of skin diseases like psoriasis and dermatitis. It also helps in reducing the inflammation and pain. Hence, it is used in burns, sunburns, ulcers. It is also used in the treatment of fungal infection.
Thus, the correct answer is 'Both A and C.'
Question 9
1 / -0

Which tree derives its name from common legend that Judas Iscariot hanged himself on it?

A
Quercus robur

B
Araucaria araucana

C
Curchorus capsularis

D
Cercis siliquastrum

Solution

Cercis siliquastrum, commonly known as the Judas tree or Judas-tree, is a small deciduous tree from Southern Europe and Western Asia which is noted for its prolific display of deep pink flowers in spring. This species forms a small tree up to 12 m (39 ft) in height and 10 m (32 ft) in width. The deep pink flowers are produced on year-old or older growth, including the trunk, in spring. Also, the flowers display a blossom with five free petals and fused sepals. This shape is specific to the Fabaceae. The leaves appear shortly after the first flowers emerge. These are cordate with a blunt apex, which occasionally has a shallow notch at the tip. The tree produces long flat pods that hang vertically. The flowers are edible and purportedly have a sweet-acid taste. There is a belief that Judas Iscariot hanged himself from a tree of this species. Another possible source for the vernacular name is the fact that the flowers and seed pods can dangle direct from the trunk in a way reminiscent of Judas's possible method of suicide.
So the correct option is 'Cercis siliquastrum'.
Question 10
1 / -0

Cymose inflorescence is present in

A
Solanum

B
Sesbania

C
Trifolium

D
Brassica
Solution
Solution:

Correct answer is option A.

Explanation for correct option:
- Inflorescence in Solanaceae family is solitary axillary, umbellate cyme, or helicoid cyme in Solanum.
- Determinate simple inflorescences are generally called as cymose. The main kind of cymose inflorescence is the cyme.
- Inflorescence meristem terminates into a floral bud, followed by the next floral meristem forming on the flank of the previous flower.

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Morphology of Flowering Plants Test 74

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Question 1

Hypanthodium

Cyattium

Venicillastet

Cyrnose

Solution

Question 2

Capitulum

Cyathium

Panicle

Spadix

Solution

Question 3

a-v, b-iv, c-iii, d-ii, e-i

a-i, b-ii, c-iii, d-iv, e-v

a-iv, b-v, c-i, d-ii, e - iii

a-ii, b-v, c-i, d-iv, e-iii

Solution

Question 4

Marigold

Slavia

Emphorbia

Jasmine

Solution

Question 5

Centrifugal opening pattern of flowers

Unlimited growth of axis

Main axis terminates in a flower

Basipetal arrangement of flowers

Solution

Question 6

single male flower is surrounded by female flowers.

male and female flowers are borne in different plants

there is only one male and one female flower

single female flower is surrounded by many peripheral male flowers.

Solution

Question 7

Umbel

Spike

Raceme

Catkin

Solution

Question 8

It helps in reducing the inflammation and pain.

It can cure cancer

It is used to cure ulcers, burns, sunburns, and fungal infection

Both A and C

Solution

Question 9

Quercus robur

Araucaria araucana

Curchorus capsularis

Cercis siliquastrum

Solution

Question 10

Solanum

Sesbania

Trifolium

Brassica

Solution

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