Tag: taxonomic description of flower

Questions Related to taxonomic description of flower

In a monoecious plant ........................

botany flower taxonomic description of flower technical terms related to flowers basics of leaf and flower

  1. Male and female sex organs are on different individuals.

  2. Male and female gametes are of two morphologically distinct types.

  3. Male and female sex organs are on the same individual.

  4. All the stamens are fused to form one unit.

Show answer
Correct Option: C
Explanation:

"Mono" means single so a monoecious plant is one that bears both male and female sex organs on same plant. The monoecious plant can produce bisexual flowers or unisexual flowers. A dioecious plant is one that bears both male and female sex organs on different plants. A dioecious plant will always produce unisexual flowers.

Largest flower is that of

botany flower taxonomic description of flower technical terms related to flowers basics of leaf and flower

  1. Sunflower

  2. Rafflesia

  3. Nelumbo

  4. Drosera

Show answer
Correct Option: B
Explanation:

Rafflesia arnoldii makes the largest single flower in the Angiospermae. It is a parasitic plant. The flower weighs around 15 pounds and can grow up to the height of 3 ft.

Hence, the correct answer is 'Rafflesia'

A flower is said to be complete when it has

botany flower taxonomic description of flower technical terms related to flowers basics of leaf and flower

  1. One whorl

  2. Three whorls

  3. Two whorls

  4. Four whorls

Show answer
Correct Option: D
Explanation:

A bisexual flower is a flower that contains all the four whorls such as petals, sepals, the male reproductive structure (stamen) and female reproductive structure (pistil). Hence it is also called as a complete or perfect flower. Thus the correct answer is 'Four whorls'.

Which of the following is not a flower

botany flower taxonomic description of flower technical terms related to flowers basics of leaf and flower

  1. Rose

  2. Lotus

  3. Sunflower

  4. Passion flower

Show answer
Correct Option: C
Explanation:

Sunflower (Hellanthus annus ) is a inflorescence (capitulum) .It is a plant of family compositae (Asteraceae).  

Bisexual flowers which never open, demonstrate

botany flower taxonomic description of flower technical terms related to flowers basics of leaf and flower

  1. Cleistogamy

  2. Allogamy

  3. Autogamy

  4. None of these

Show answer
Correct Option: A
Explanation:

Some plants never open to ensure complete selfpollination. This condition is called cleistogamy e.g., Commelina bengalensis , Oxalis, Viola, etc. The cleistogamous flower are bisexual small, inconspicuous, colourless and do not secrete nectar.

Anthesis means.

botany flower taxonomic description of flower technical terms related to flowers basics of leaf and flower

  1. Growth of pollen tube inside the carpel

  2. Dehiscence of anthers

  3. Opening of floral bud

  4. Emergence of anthers

Show answer
Correct Option: C

An apocarpous flower is found in

botany flower taxonomic description of flower technical terms related to flowers basics of leaf and flower

  1. Caesalpinnia

  2. Ranunculus

  3. Brassica

  4. Datura

Show answer
Correct Option: B
Explanation:

Apocarpous : Gynoecium consisting of two to many free carpels Each carple forms its own pistils, e.g.,  Ranunculus. 

Match the columns and find the correct option.

I II
(a) Pistils fuse together (i) Gametogenesis
(b) Formation of gametes (ii) Pistillate
(c) Hyphae of higher ascomycetes (iii) Syncarpous
(d) Unisexual female flower (iv) Dikaryotic
botany flower taxonomic description of flower technical terms related to flowers basics of leaf and flower

  1. a-iii, b-i, c-iv, d-ii

  2. a-iv, b-iii, c-i, d-ii

  3. a-ii, b-i, c-iv, d-iii

  4. a-i, b-ii, c-iv, d-iii

Show answer
Correct Option: A
Explanation:
•When the carpels or pistils get fused, they are known as syncarpous.
•Formation of gametes from the diploid cells through meiosis is called gametogenesis.
•Hyphae of higher ascomycetes are dikaryotic because when the hyphae of two opposite strains fuse, karyogamy doesn't occur immediately and a binucleate condition is produced having nuclei from two different strains.
•A unisexual flower that has only female reproductive part is called pistillate.
Hence, the correct match is:
a-iii, b-i, c-iv, d-ii
So, the correct answer is A.

Study of endemism is important to a plant taxonomist because.

botany flower taxonomic description of flower technical terms related to flowers basics of leaf and flower

  1. Of wide distribution of endemics

  2. Endemics have been subjected to major climatic revolutions

  3. Taxonomist is equally concerned with the history of floras

  4. Endemics have not been physiographically isolated

Show answer
Correct Option: A

Consider the following statements with reference to serotaxonomy.
a. The antigen components of plants represent characteristics of taxonomic importance.
b. Both structural and reserve proteins can be used for the classification of plants.
c. Proteins of the same group from different organs are always comparable.
Which of these statements are correct?

botany flower taxonomic description of flower technical terms related to flowers basics of leaf and flower

  1. $1, 2$ and $3$

  2. $1$ and $2$

  3. $2$ and $3$

  4. $1$ and $3$

Show answer
Correct Option: A