Tag: botany

Quizzes (264) Questions (5276)

Questions Related to botany

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

Flower with all the four types of floral organs is

  1. Regular

  2. Irregular

  3. Complete

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

There are four whorls in a flower namely, calyx, corolla, androecium and gynoecium. When a flower has all these four whorls, it is called complete. When any of these are missing, flower is called incomplete.

A. Regular flowers are those that have radial symmetry and are called actinomorphic.
B. Irregular flowers have a bilateral symmetry and are called zygomorphic.
C. Complete flower has all the four whorls.
D. Perfect flower is the one that has both the male and female sex organs, that is, androecium and gynoecium present.
Hence, the correct answer is 'Complete'

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

Flower with both the types of sexual floral organs is

  1. Complete

  2. Perfect

  3. Incomplete

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

There are different terms used to describe flowers on the basis of presence and absence of the floral parts or the whorls. A flower that has both the sexual organs, that is both male reproductive parts (androecium) and female reproductive parts (gynoecium) is called a perfect flower.

A. Complete flower is the one that has all the four whorls of calyx, corolla, androecium and gynoecium.
B. Perfect flower is the one that has both the sex organs.
C. Incomplete flower is the one that lacks one or more floral whorls.
D. Dimorphic flowers are unisexual flowers.
Hence, the correct answer is 'Perfect'.

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

Smallest flower belongs to

  1. <p>Rosa indica</p>

  2. <p>Wolffia microscopica</p>

  3. <p>Ranunculus scleratus</p>

  4. <p>Colocasia antiquorum</p>
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Wolffia microscopica makes the smallest flowers in the Angiospermae. The flower has a single pistil and stamen. The fruit is also smallest, called utricle. Wolffia microscopica belongs to the family Lemnaceae.

Hence, the correct answer is 'Wolffia microscopica'

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

A pistillate flower does not possess _________.

  1. Corolla

  2. Androecium

  3. Calyx

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

Pistillate flower refers to that imperfect or unisexual flower which does not have the male reproductive organ called the stamen. The stamens are collectively called the androecium. So, a pistillate flower will only show the gynoecium (the female reproductive whorl) and not the androecium. Similarly, a staminate flower will only show the androecium (male reproductive whorl) and not the gynoecium. Hence, the correct answer is 'Androecium'

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

Small sized sessile flower is

  1. Incomplete

  2. Floret

  3. Imperfect

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

Florets are the small-sized sessile flowers that collectively form a composite flower in case of the family Asteraceae. Such a flower is called head or capitulum. They are sessile because of the absence of a pedicel.

A. Incomplete flowers do not have all the four floral whorls.
B. Florets are small sessile flowers arranged to form a capitulum.
C. Imperfect flowers do not have both the sex organs. These are unisexual flowers.
Hence, the correct answer is 'Floret'

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

Individual flowers are attached to inflorescence axis by ________.

  1. Peduncle

  2. Petiole

  3. Pedicel

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

The individual flowers in an inflorescence are attached by means of pedicel. Such flowers are called pedicellate. When the pedicel is absent, the flowers are called sessile.

A. The peduncle is the axis that bears the whole inflorescence.
B. The leaves are attached to the branch by the petiole.
C. Individual flowers are attached to the inflorescence axis by a pedicel.
D. Bracts are present exterior to the calyx.
Hence, the correct answer is 'Pedicel'.

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

A flower having both sepals and petals is

  1. Achlamydeous

  2. Dichlamydeous

  3. Monochlamydeous

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

The flowers can be defined on the basis of presence and absence of the sepals and petals. When both the sepals and petals are present, the flower is called dichlamydeous.

A. When both the sepals and petals are absent, the flower is called achlamydeous. Only sexual parts represent the flower.
B. When both the sepals and petals are present, the flower is dichlamydeous.
C. When only one accessory whorl is present as perianth, the flower is called monochlamydeous.
D. When either the stamens or the carpels are absent, the flowers are called diclinous.
Hence, the correct answer is 'Dichlamydeous'.

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

Adhesion in a flower is

  1. Union of dissimilar parts

  2. Union of similar parts

  3. Aggregation of similar parts

  4. Aggregation of dissimilar parts
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Adhesion in a flower occurs when the dissimilar floral parts unite with each other. For example, stamens can unite with petals to form epipetalous flowers, stamens can unite with perianth lobes to form epiphyllous flowers, stigma, style and stamens can unite to form gynostegium etc.

Hence, the correct answer is 'Union of dissimilar parts'

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

Flower with both the sex organs is

  1. Intersexual

  2. Bithecous

  3. Didynamous

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

Flower with both the sex organs is called an intersexual, bisexual, hermaphrodite or perfect flower.

A. Intersexual flowers are hermaphroditic.
B. Bithecous anther has two lobes.
C. A didynamous condition has four stamens, two are longer and the other two are shorter.
D. Diplostemonous androecium has two whorls of stamens, one whorl alternates with petals and the other whorl alternates with sepals.
Hence, the correct answer is 'Intersexual'