Tag: taxonomic description of flower

Questions Related to taxonomic description of flower

Which plant part is utilized for extraction of drugs from Adhatoda vasica, Aloe barbadensis and Digitalis purpurea?

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

  1. Flowers

  2. Underground parts

  3. Leaves

  4. Stems

Show answer
Correct Option: A

Which one of the following is the modern approach is plant taxonomy?

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

  1. t-RNA analysis

  2. DNA fingerprinting

  3. Numerical taxonomy

  4. r-RNA analysis

Show answer
Correct Option: A

Which is a character of castor plant to avoid autogamy?

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

  1. Unisexuality

  2. Porogamy

  3. Protandry

  4. Heterostyly

Show answer
Correct Option: A

Which among the following statements are true for unisexual flowers?
(i) They possess both stamen and pistil.
(ii) They possess either stamen or pistil.
(iii) They exhibit cross pollination.
(iv) Unisexual flowers possessing only stamens cannot produce fruits.

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

  1. (i) and (iv)

  2. (ii), (iii) and (iv)

  3. (iii) and (iv)

  4. (i), (iii) and (iv)

Show answer
Correct Option: B
Explanation:

In angiosperms flowers can be unisexual having either stamen or pistil; or bisexual having both stamen and pistil in same flower. In both the types of flowers, Pistil bears ovary. Fruit is ripened or matured ovary. After fertilisation ovary undergoes major changes and its wall also thickens to produce a fruit.

Therefore, the correct answer is option B.

Which of the following is polygamous ?

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

  1. Wolf

  2. Swan

  3. Deer

  4. Fox

Show answer
Correct Option: A

Which of the following statements is incorrect?

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

  1. Hydrophilous flowers contain light and dry pollen grains

  2. In Commelina, seed setting is assured in absence of pollinating agents

  3. Pollen germination and pollen tube growth are regulated by chemical components of pollen interacting with those of the pistil

  4. Emasculation ensures cross-pollination in bisexual flowers

Show answer
Correct Option: A

Keel is characteristic of the flowers of 

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

  1. Bean

  2. Gulmohar

  3. Cassia

  4. Calotropis

Show answer
Correct Option: A
Explanation:

In pea and bean, five types of petals are present. The largest petal (standard) overlaps the two lateral petals (wings), which in turn overlap two smallest anterior petals, which are known as keel. 

When a flower can be cut in two equal portion from only one plane it is called?

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

  1. Actinomorphic

  2. Zygomorphic

  3. Symmetrical

  4. Bilateral

Show answer
Correct Option: B
Explanation:

Zygomorphic flowers that are bilaterally symmetrical so that they are able to be bisected into similar halves in only one plane, forming mirror images, e.g., Gladiolus flower.

Which among the following statements are true for unisexual flowers?
(a) They possess both stamen and pistil.
(b) They possess either stamen or pistil.
(c) They exhibit cross-pollination.
(d) Unisexual flowers possessing only stamens cannot produce fruits.

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

  1. (a) and (d)

  2. (b), (c) and (d)

  3. (c) and (d)

  4. (a), (c) and (d)

Show answer
Correct Option: B
Explanation:

Unisexual flowers have either the male reproductive part (stamens) or female reproductive part (pistil) but never both.
As the flowers contain either the stamen or pistil, the fertilization can take place when the pollen from another flower or plant comes near the pistil. As there will be fusion of male and female gametes from different individuals of the same species, it results in cross-fertilization.
When the ovary (female reproductive part) ripens, it forms the fruit. So, when a plant contains only stamen, female reproductive part, it cannot produce a fruit.
Thus, the correct answer is option (B).

Botanical name of the cauliflower is

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

  1. Brassica oleracea var capitata

  2. Brassica oleracea var. gemmifm

  3. Brassica campestris

  4. Brassica oleracea var. botrytis

Show answer
Correct Option: D
Explanation:
The botanical name of cauliflower is Brassica oleracea. It is a biennial plant. It is commonly used as vegetable. The genus Brassica is characterized by zygomorphic flower, capsule fruit. Leaves are alternately arranged. Cruciferae is the other name of this family which means cross size petals.
So, the correct answer is option D.