Tag: taxonomic description of flower

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Questions Related to taxonomic description of flower

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'

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

Beauty of Bougainvillea flowers is due to

  1. Corolla

  2. Calyx

  3. Bracts

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

The flowers of Bougainvillea appear bright pink due to their bracts. This is called homochlamydeous condition when the calyx and corolla cannot be differentiated. These coloured bracts are called petaloid bracts.

Hence, the correct answer is 'Bracts'.

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

A flower without non-essential whorls is

  1. Monoecious

  2. Dioecious

  3. Both A and B

  4. Achlamydeous

  5. Hermaphrodite
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A flower is characterised by the calyx and corolla as the non-essential whorls because these are not directly involved in the formation of gametes and fertilization. When these are absent, the flower is called achlamydeous. For example, flowers of willow.

Hence, the correct answer is 'Achlamydeous'

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

An intersexual flower has

  1. No nonessential flower whorl

  2. No essential floral whorl

  3. Both the essential floral whorls

  4. All the floral whorls
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

An intersexual flower is also called as the perfect, bisexual or hermaphrodite flower. It has presence of both the male reproductive whorl called the androecium and the female reproductive whorl called the gynoecium. The units of androecium are called the stamens. The units of gynoecium are called the carpels. These are called essential whorls as they form the male gametes and female gametes. Hence, the correct answer is 'Both the essential floral whorls'

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

State whether the following statements are true or false.
The flowers of dicotyledons are typically trimerous while monocots possess pentamerous flowers.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Trimerous flowers have flower parts, such as petals, sepals, and stamens, in sets of three. Pentamerous divided into five parts; specifically, having each floral whorl consist of five (or a multiple of five) members. A dicot is a type of flowering plant characterized by its two cotyledons, tetramerous or pentamerous flowers, and net-like leaf veins.  In monocots, flowers are trimerous (number of flower parts in a whorl in threes).

So, the correct option, 'False'.