Tag: flower

Quizzes (4) Questions (81)

Questions Related to flower

Multiple choice botany flower androecium and gynoecium flower: accessory parts and reproductive parts reproductive morphology

When the filament of anther is fixed at a point about the middle of the connective and the movement is free in the sac is called as ______

  1. Versatile

  2. Basifixed

  3. Adnate

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

In most grasses, the attachment is versatile where the filament is attached merely at a point about the middle of the connective so that the anthers can swing on it freely.

Multiple choice botany flower androecium and gynoecium flower: accessory parts and reproductive parts reproductive morphology

Which one of the following does not have a polycarpellary ovary?

  1. Guava

  2. Apple

  3. Coconut

  4. Fig
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Fig is a composite fruit which develops from a unicarpellary ovary which forms the fruitlets. Several fruitlets in a hypanthodium inflorescence form the actual fruit.

Guava is a false berry which develops from an inferior polycarpellary ovary.
Apple is a pome in which the fleshy part is the thalamus and inside it the actual fruit develops from a polycarpellary ovary.
Coconut is a type of drupe which develops from either a bicarpellary or a tetracarpellary ovary.
So, the correct answer is 'Fig'.

Multiple choice botany flower androecium and gynoecium flower: accessory parts and reproductive parts reproductive morphology

Hesperidium develops from an ovary which is

  1. Polycarpellary, superior and syncarpous

  2. Polycarpellary, inferior and syncarpous

  3. Polycarpellary, superior and apocarpous

  4. Bicarpellary, superior and syncarpous
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Hesperidium is a type of berry in which the epicarp and mesocarp fuse and form a leathery covering which can be removed and the endosperm forms the fibrous septa. It develops from a polycarpellary, superior and syncarpous ovary. So, the correct answer is 'Polycarpellary, superior and syncarpous'.
Multiple choice botany flower androecium and gynoecium flower: accessory parts and reproductive parts reproductive morphology

Flowers showing basipetal succession are observed in

  1. Caesalpinia and Clerodendron

  2. Jasmine and Gold mohar

  3. Gold mohar and Caesalpinia

  4. Clerodendron and Jasmine
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Floral succession can be racemose, cymose, special type or mixed type. In racemose inflorescence, flowers are arranged in acropetal succession. in which the younger flowers are at the apex and the older flowers are at the base. In cymose inflorescence, flowers are arranged in basipetal succession in which the younger flowers are at the base and the older flowers are at the apex. Clerodendron and Jasmine show basipetal succession
So, the correct answer is 'Clerodendron and Jasmine'
Multiple choice botany flower androecium and gynoecium flower: accessory parts and reproductive parts reproductive morphology

Which of the following statements are correct?
1. Rule of Priority in plant nomenclature commenced from $1853$
2. Binomial nomenclature was introduced by Linnaeus in $1753$
3. The orchid fruit contains five distinct seeds
4. Gynobasic style is found in Lamiaceae
Select the correct answer using the codes given.

  1. $1$ and $2$
  2. $2$ and $4$
  3. $1$ and $3$
  4. $2$ and $3$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

  1. The first rule commence for botanical nomenclature is in the year 1867 in Paris by A.P.de Candolle.
  2. Binomial nomenclature was given by Linnaeus in 1753.
  3. Orchids have the smallest seed in the world and produces millions in numbers.
  4. When style arises from the cavity from the centre of ovary or from thalamus is gynobasic style and it is the characteristic of Lamiaceae family.
So the correct statemnts are "2and 4".

Multiple choice botany flower androecium and gynoecium flower: accessory parts and reproductive parts reproductive morphology

Long filamentous threads protruding at the end of a young cob of maize are-

  1. Anthers

  2. Styles

  3. Ovaries

  4. Hairs
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
In a cob of maize, each ovary has a long silky (hairy) style, called as corn silk. Collectively these styles protrude at the end of a young cob. The grains are formed on the cob which remains covered by the leafy bracts.

So, the correct answer is 'Styles'.
Multiple choice botany flower androecium and gynoecium flower: accessory parts and reproductive parts reproductive morphology

The statements given below describe certain features that are observed in the pistil of flowers.
I. Pistil may have many carpels.
II. Each carpel may have more than one ovule.
III. Each carpel has only one ovule.
IV. Pistil have only one carpel.
Choose the statements that are true from the option below.

  1. I and II

  2. I and III

  3. II and IV

  4. III and IV
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Each pistil is constructed of from one to many enrolled leaflike structures, or carpels, each of which encloses one or more ovules. The carpel is a single megasporophyll, or modified seed-bearing leaf. A pistil then may be composed of one carpel (simple pistil), as in the sweet pea, or of two or more carpels (compound pistil) partially or completely joined, as in the mustard (two carpels) or lily (three carpels). A carpel has three parts: stigma, ovary, and style. The stigma is responsible for pollination and is the top-most part of the carpel. The ovary is responsible for determining the number of carpels in a plant and is the bottom-most part of a carpel. Lastly, the style is responsible for connecting the stigma and ovary together, helping with the transfer of pollen through the carpel for pollination.


So, the correct option is 'Option A'.