Tag: introduction to inflorescence

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Multiple choice botany inflorescence introduction to inflorescence inflorescence and its type basics of leaf and flower

Find the correct match.

Column-I Column-II
(a) Gall flowers (i) Theobroma
(b) Sympoidal axis (ii) Bougainvillea
(c) Achlamydeous (iii) Ficus
(d) Cauliflory (iv) Euphorbia
(v) Hamelia
  1. $a-3, b-5, c-1, d-2$
  2. $a-3, b-4, c-2, d-1$
  3. $a-3, b-4, c-1, d-2$
  4. $a-3, b-5, c-4, d-1$
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Gall flowers are found in Ficus (iii), sympoidal axis in Hamelia (v), achlamydeous in Euphorbia (iv), and cauliflory in Theobroma (i).

Multiple choice botany inflorescence introduction to inflorescence inflorescence and its type basics of leaf and flower

Longest inflorescence is that of.

  1. Lily

  2. Cassia

  3. Callistemon

  4. Agave
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The flowers of Cassia fistula are grouped in the axillary and many-flowered racemes. These inflorescences are large in size and up to 15-40 cm long, pendulous and bright yellow. Long inflorescence of Cassia fistula from Sri Lanka and reaching up to 238 cm. It can be considered as the longest recorded legume inflorescence.

So the correct option is B.

Multiple choice botany inflorescence introduction to inflorescence inflorescence and its type basics of leaf and flower

Diplostemonous androecium occurs in _______.

  1. Silene

  2. Murraya

  3. Asparagus

  4. Brassica
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Diplostemonous androecium occurs in murraya. It is a bearing small, white, scented flowers. The species is widely grown as an ornamental tree or hedge. In displostemonous condition, two whorls of stamens are found, stamens of outer, whorl are alternate with petals, while the stamens of inner whorl are opposite to petals. e.g. Murraya exotica.

Therefore, It occurs in Murraya. 

Multiple choice botany inflorescence introduction to inflorescence inflorescence and its type basics of leaf and flower

In Dorstenia, the inflorescence is?

  1. Coenanthium

  2. Anthodium

  3. Spike of spikes

  4. Spikelet
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
A. Coenanthium in which the receptacle, instead of forming a closed structure, becomes saucer-shaped with the margins slightly curved up. The example is dorstentia belonging to the family Moraceae. 
B. Anthodium or capitulum or head bears many sessile and small florets. The main axis becomes flat and called receptacle. It is a type of racemose inflorescence. Example: sunflower.
C. Spike in which peduncle has bisexual and sessile flowers. It is a type of the racemose inflorescence. 
D. Spikelet is small and special spike. Flowers are produced in the axil of fertile bracts called lemma. It is type of racemose inflorescence. 

So, the correct answer is 'Coenanthium'.
Multiple choice botany inflorescence introduction to inflorescence inflorescence and its type basics of leaf and flower

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

  1. Cyathium

  2. Verticillaster

  3. Spadix

  4. Hypanthodium
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

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'.

Multiple choice botany inflorescence introduction to inflorescence inflorescence and its type basics of leaf and flower

Match the column I with column II and select the correct option from the gives codes.


   Column I     Column II  
 A.  Pedicel  (i)  Reduces leaf  
 B.  peduncle  (ii)  Stalk of the flower
 C.  Bract   (iii)  Stalk of the leaf 
 D.  Petiole  (iv)  Inflorescence axis

  1. A-(ii), B-(iv), C-(i), D-(iii)

  2. A-(iii), B-(iv), C-(i), D-(ii)

  3. A-(iii), B-(ii), C-(i), D-(iv)

  4. A-(ii), B-(iii), C-(i), D-(iv)
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

(A) Pedicel - Stalk of the flower

(B) Peduncle - Inflorescence axis
(C) Bract - Reduced leaf
(D) Petiole - Stalk of the leaf
So, the correct answer is (a).

Multiple choice botany inflorescence introduction to inflorescence inflorescence and its type basics of leaf and flower

Awn of wheat and barley is developed from

  1. Glume I

  2. Glume II

  3. Lemma

  4. Palea
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Awns are characteristic of many grasses (Poaceae), where they extend from the lemmas of the florets. This often makes the hairy appearance of the grass synfloresce. Awns may be long or short, straight or curved, single or multiple per floret. Some genera are named after their awns, such as the three-awns (Aristida). In some species, the awns can contribute significantly to photosynthesis, as, for example, in barley. The awns of wild emmer wheat spikelets effectively self-cultivate by propelling themselves mechanically into soils.
During a period of increased humidity during the night, the awns of the spikelet become erect and draw together and in the process push the grain into the soil. During the daytime the humidity drops and the awns slacken back again. However, fine silica hairs on the awns act as ratchet hooks in the soil and prevent the spikelets from reversing back out again. So, awn of wheat and barley develops from lemma. 
Therefore, the correct answer is option C.

Multiple choice botany inflorescence introduction to inflorescence inflorescence and its type basics of leaf and flower

Rhipidium inflorescence of Solanum nigrum is

  1. Modified scorpiod cyme

  2. Helicoid cyme

  3. Capitulum

  4. Multiparous cyme
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

  1. Rhipidium is scorpioid cyme having all flowers in one plane.Ex. Solanum nigrum
  2. In helicoid cyme, the flowers are born on one side. Ex Begonia
  3. Capitulum also called Racemose head in which peduncle is flattened that form receptacle that holds centripetally arranged sessile flowers or floret surrounded by an involucre of bracts. Ex Sunflower Helianthus annuu.
  4. In multiparous cyme, the main branch converts into flower the old flower at the center and younger at the periphery while it produces lateral branch as well. Ex Calatropis.
So the correct option is "Modified scorpioid cyme".