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Inflorescence (Class XI/XII)

Description: Proteins
Number of Questions: 15
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Tags: inflorescence Biology Leaf Morphology Inflorescence Inflorescence and its Types
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Which inflorescence is exhibited by oak flowers?

  1. Capitulum

  2. Spikelet

  3. Amentum

  4. Spadix


Correct Option: C
Explanation:

The inflorescence exhibited by oak flowers is amentum.

What is the abnormal placement of organs which happens due to unequal growth during inflorescence called?

  1. Merosity

  2. Metatopy

  3. Metastasis

  4. Metaphyte


Correct Option: B
Explanation:

Metatopy is the abnormal placement of organs.

The axis of inflorescence is known as

  1. pedicel

  2. peduncle

  3. petiole

  4. rachis


Correct Option: B
Explanation:

The axis of inflorescence is called peduncle.

Which of the following is a characteristic of cymose inflorescence?

  1. The growing point seldom ends in a flower.

  2. Formation of flowers is indefinite.

  3. The floral axis is sympodial or multipodial.

  4. The arrangement of flowers is acropetal.


Correct Option: C
Explanation:

The floral axis is sympodial or multipodial.

In which inflorescence do flowers not have pedicel?

  1. Corymb

  2. Terminal solitary

  3. Spike

  4. Umbel


Correct Option: C
Explanation:

Spike is a type of raceme with flowers that does not have pedicel.

What does concaulescent condition refer to?

  1. Placement of bract

  2. Arrangement of petals

  3. Organisation of inflorescence

  4. Arrangement of leaves on the stem


Correct Option: A
Explanation:

When the formation of the bud is shifted up the stem, distinctly above the subtending leaf, it is described as concaulescent.

In which inflorescence is a flower enclosed by bracteoles, named lemma and paleae?

  1. Spike

  2. Spikelet

  3. Catkin

  4. Spadix


Correct Option: B
Explanation:

In spikelet inflorescence, a flower is enclosed by bracteoles, named lemma and paleae.

Which modified capitulum bears an apical pore called ostiole?

  1. Cyathium

  2. Verticillaster

  3. Hypanthodium

  4. Mixed spadix


Correct Option: C
Explanation:

Hypanthodium is a modified capitulum, which bears an apical pore called ostiole.

Pollinator-attracting bract spathe is found in

  1. spike inflorescence

  2. spadix inflorescence

  3. spikelet inflorescence

  4. hypanthodium


Correct Option: B
Explanation:

Fleshy and brightly coloured large bract known as spathe is found covering the spadix inflorescence, which attracts insects for pollination.

In which of the following flowers is the main axis flattened?

  1. Onion

  2. Sunflower

  3. Maize

  4. Ixora


Correct Option: B
Explanation:

The main axis is flattened in sunflower. 

Which of the following is a wrong pair?

  1. Uniparous scorpioid cyme - Cotton

  2. Biparous cyme - Jasmine

  3. Polychasial cyme - Nyctanthus

  4. Solitary terminal - Argemone


Correct Option: C
Explanation:

Nyctanthus inflorescence grows in dichasial cyme pattern.

_________ is a type of raceme with a short axis and multiple floral pedicels of equal length that appear to arise from a common point.

  1. Capitulum

  2. Corymb

  3. Umbel

  4. Spadix


Correct Option: C
Explanation:

Umbel is a type of raceme with a short axis and multiple floral pedicels of equal length that appear to arise from a common point.

Which of the following is a characteristic feature of family Asteraceae?

  1. Spikelets

  2. Calathid

  3. Synconium

  4. Cyathia


Correct Option: B
Explanation:

The family Asteraceae is characterised by a highly specialised head, technically called a calathid.

Spike of spikelets is a

  1. mixed inflorescence

  2. special inflorescence

  3. compound inflorescence

  4. simple inflorescence


Correct Option: C
Explanation:

Spike of spikelets is a compound inflorescence. 

A mixed inflorescence of cymose and corymb is seen in

  1. lingustrom

  2. banana

  3. ixoma

  4. lantana


Correct Option: C
Explanation:

In ixoma, the inflorescence of some flowers looks like corymb inflorescence.

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